CN102878365B - Sliding pipe gathering component - Google Patents
Sliding pipe gathering component Download PDFInfo
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- CN102878365B CN102878365B CN201210362665.8A CN201210362665A CN102878365B CN 102878365 B CN102878365 B CN 102878365B CN 201210362665 A CN201210362665 A CN 201210362665A CN 102878365 B CN102878365 B CN 102878365B
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- flange
- metal tube
- radial
- inner core
- pipe
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Abstract
The invention relates to a sliding pipe gathering component, and belongs to the technical field of fluid conveying pipelines. The component comprises a first metal pipe and a second metal pipe which are butted with each other, wherein one of the two metal pipes is provided with a butting flange edge, and the other metal pipe is provided with a butting external thread; locking nuts screwed with external threads are sleeved at butted joints of the two metal pipes; a second flange which is sealed in the radial direction is sleeved outside the first metal pipe; a first flange is arranged at one end, which is adjacent to the second metal pipe, of the second flange; a third flange is arranged at one end, which is far away from the second metal pipe, of the second flange; the first flange is sealed and welded with an inner hole of an inner barrel; a radial and axial sealing piece is arranged at a joint of the first flange and the second flange; and the first flange, the second flange and the third flange are fixedly connected with one another through axial fastening pieces. By the sliding pipe gathering component, the problem that the conventional detachable orifice structure cannot be reliably sealed under a working condition of ultrahigh temperature is solved; the sealing property of the assembled sliding pipe gathering component is guaranteed; and influence of thermal stress on sealing is avoided.
Description
Technical field
The present invention relates to a kind of slip header assembly, especially a kind of high temperature resistant detachable slip header assembly for superhigh temperature, vacuum and high-tension apparatus, belongs to fluid delivery pipeline technical field.
Background technique
As shown in Figure 1, the steel pipe of side (forging pipe) 1 and opposite side copper pipe 2 to be connected by fastening piece by termination flange 1-1,2-1 of its junction and docks header assembly in the equipment such as existing heat exchange, form interior pipe; Steel pipe 1 external welding expansion flange 3, and to be connected by fastening piece by the joint flange 6 of outer inner core 5 termination of jacketed 4 of expansion flange 3 and interior pipe and to dock.During use, cooling water takes away the heat of high temperature media in inner core by interior pipe flowing.Facts have proved, there are the following problems for this existing structure: the termination flange fastener of steel pipe and copper pipe joint is exposed in high temperature media, its heat cannot be taken away by the cooling medium in interior pipe, once temperature is higher, the sealability of this joint will be affected (as S316 high alloy stud serviceability temperature is restricted to 700 DEG C because the fastening force of fastening piece cannot ensure, and allowable stress is only 30MPa when 700 DEG C, after exceeding this limit, sealability cannot ensure).In addition, because chuck outside is by Air flow, therefore when resistance to heat medium temperature is too high, also there is above-mentioned Similar Problems in the joint of expansion flange and outer tube termination joint flange.
Summary of the invention
The object of the invention is to: for above-mentioned prior art Problems existing, by architecture advances, propose a kind of slip header assembly also guaranteeing reliable sealing in high temperature media environment.
In order to reach above object, slip header assembly of the present invention comprises the first metal tube (forging pipe) and second metal tube (copper pipe) of sealing docking mutually, and described second metal tube is arranged in inner core, and described first metal tube extends inner core; One of described two metal tubes have the abutted flange limit of radially extending, and another has docking outside thread; Described two metal tube joint covers have the locking nut screwed with described outside thread, and described locking nut has radial inward away from described externally threaded one end and extends the locking limit blocking described flange edge; Described first metal tube is set with the second flange of radial seal outward, and the first flange is equipped with in one end of contiguous second metal tube of described second flange, and described second flange is equipped with three-flange away from one end of the second metal tube; The endoporus seal welding of described first flange and described inner core, described first flange and the second flange apposition position are equipped with radial direction and axial seal, and described first, second, third flange is connected by axial fastener.
Like this, due to can displacement to axial between the first metal tube and flange, automatically the stress that thermal distortion produces can be eliminated, therefore the unreliable problem of sealing that prior art was welded and fixed location generation is avoided, and the fastening piece be exposed in inner core high temperature media is heated evenly, fit sealing can be remained; And the double seal formed between the first flange and the second flange makes sealing effect better.
In a word, the invention solves conventional demountable tube mouth structure cannot under superhigh temperature operating mode the problem of reliable sealing, ensure that the sealing after assembling and avoid the impact of thermal stress on sealing.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of prior art.
Fig. 2 is the structural representation of the embodiment of the present invention one.
Embodiment
Embodiment one
The slip header assembly of the present embodiment as shown in Figure 2, comprises the first metal tube 1---steel forges pipe and second metal tube 2---copper pipe of mutual sealing docking.First metal tube 1 is equipped with end-face seal ring 12 with the end face that docks of the second metal tube 2.Second metal tube 3 is connected as a single entity with the round case 2-3 with radial perforation array, and is arranged in inner core 5 together with circle case, and the first metal tube 1 extends inner core 5.The steel forging pipe of one of two metal tubes has the abutted flange limit 1-1 radially extended, and copper pipe then has docking outside thread 2-1.Two metal tube joint covers have the locking nut 7 screwed with outside thread 2-1, and this locking nut has away from one end of outside thread 2-1 the locking limit 7-1 that flange edge 1-1 is blocked in radial inward extension.The outer suit of first metal tube 1 is by the second flange 3 of O-ring seals 8 radial seal, and one end of contiguous second metal tube 2 of this second flange is equipped with the first flange 6, second flange 3, away from one end of the second metal tube 2, three-flange 10 is housed.First flange 6 and the second flange 2 apposition position are shaped with inner bore chamfering, trapezoid cross section seal ring 9, first flange 10, second flange 3, the three-flange 6 that realize end face and radial seal are wherein housed and axially fasten bolt 11 by one group and be connected.The endoporus seal welding (outside inner core, there is chuck) of the inner core 5 of the first flange 6 and jacketed 4, specifically, one end undergauge of contiguous second metal tube 2 of the first flange 6 forms ladder, the endoporus seal welding of chuck 4 is at the large footpath place of ladder, the endoporus seal welding of inner core 5 is at the path place of ladder, this structure is particularly applicable to the arrangement of trapezoid cross section seal ring 9, because the inner bore chamfering cross section of the second flange 2 apposition position is slightly less than trapezoid cross section seal ring 9, be broken down into the radial force acting on the first metal tube 1 after the axial pressure that fastening piece produces acts on trapezoid cross section seal ring 9 to bear primarily of the large footpath place of ladder, inner core 5 is not affected substantially, and the axial force acted on the first flange 6 makes itself and O type circle 8 form double-deck radial seal, produce when can effectively prevent the first metal tube from sliding and leak.Steel forging pipe is less than the matching gap with the second flange with the matching gap of the first flange, and steel forging pipe is less than the matching gap with three-flange with the matching gap of the second flange.
During work, the flowing medium flowing into steel forging pipe, by after forging pipe, enters copper pipe and flows out from multiple radial perforations of circle case respectively, realize shunting.The more original flange volume of locking nut obviously reduces, edge heat can be taken away by pipe inner cooling water, significantly can reduce the design temperature CLV ceiling limit value of locking nut, even if under superhigh temperature operating mode, the temperature of locking nut also can not be too high, and homogeneous temperature, thus ensure that the sealing of joint.
In addition, steel forging pipe essence constitutes " piston " structure, can the sliding axially of relative first flange, eliminate former welded structure, when first flange, the second flange, three-flange compress, trapezoid cross section seal ring can play the effect of radial seal end face seal simultaneously, ensure that the sealing effect of header under vacuum environment, especially high temperature condition.After screwing off locking nut, steel forging pipe can be extracted out from container inner core, simple and quick, realizes quick detach.
Be summed up, the present embodiment compared with prior art, has following remarkable advantage:
1) fit up gap between steel forging pipe and flange, by gradually diminishing inwardly outward, is not only conducive to dismounting, and high temperature media can be avoided to impact the second flange, three-flange, avoids flange distortion and the seal failure that causes.
2) flange adopts double sealing structure, and sealing effect is better.
3) produced cooperation when the slide design of steel forging pipe avoids assembling (if right-hand member heat exchanging tube position is fixed in prior art, existed between flange with flange and coordinate, sealing cannot be ensured, in running, heat exchanging tube can increase mouth of pipe place shell stress indirectly because of thermal expansion simultaneously), the impact of thermal stress on sealing place can be eliminated as free end.
4) solve conventional demountable tube mouth structure cannot be used in superhigh temperature operating mode under problem
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (4)
1. a slip header assembly, comprise the first metal tube and second metal tube of sealing docking mutually, described second metal tube is arranged in inner core, and described first metal tube extends inner core; It is characterized in that: one of described two metal tubes have the abutted flange limit of radially extending, and another has docking outside thread; Described two metal tube joint covers have the locking nut screwed with described outside thread, and described locking nut has radial inward away from described externally threaded one end and extends the locking limit blocking described flange edge; Described first metal tube is set with the second flange of radial seal outward, and the first flange is equipped with in one end of contiguous second metal tube of described second flange, and described second flange is equipped with three-flange away from one end of the second metal tube; The endoporus seal welding of described first flange and described inner core, described first flange and the second flange apposition position are equipped with radial direction and axial seal, and described first, second, third flange is connected by axial fastener; Have chuck outside described inner core, one end undergauge of contiguous second metal tube of described first flange forms ladder, and the endoporus seal welding of described chuck is at the large footpath place of described ladder, and the endoporus seal welding of described inner core is at the path place of described ladder; The matching gap of described first metal tube and the first flange is less than the matching gap with the second flange, and the matching gap of the first metal tube and the second flange is less than the matching gap with three-flange.
2. slip header assembly according to claim 1, is characterized in that: described first flange and the second flange apposition position are shaped with inner bore chamfering, is wherein equipped with and realizes trapezoid cross section seal ring that is radial and axial seal.
3. slip header assembly according to claim 2, is characterized in that: described first metal tube is equipped with end-face seal ring with the end face that docks of the second metal tube.
4. slip header assembly according to claim 3, is characterized in that: described second metal tube is connected as a single entity with the round case with radial perforation array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362665.8A CN102878365B (en) | 2012-10-18 | 2012-10-18 | Sliding pipe gathering component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362665.8A CN102878365B (en) | 2012-10-18 | 2012-10-18 | Sliding pipe gathering component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878365A CN102878365A (en) | 2013-01-16 |
| CN102878365B true CN102878365B (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210362665.8A Active CN102878365B (en) | 2012-10-18 | 2012-10-18 | Sliding pipe gathering component |
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| Country | Link |
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| CN (1) | CN102878365B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728224A (en) * | 2020-12-30 | 2021-04-30 | 北京航天益森风洞工程技术有限公司 | Cross-cabin sealing structure and equipment |
| CN115153367B (en) * | 2022-06-01 | 2024-05-24 | 北京享捷科技有限公司 | Butt joint structure, maintenance station and automatic sweeping and dragging device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2835762Y (en) * | 2005-10-31 | 2006-11-08 | 许智远 | Ball type joint for high pressure single flow water mist fire suppression device |
| CN201748073U (en) * | 2010-07-14 | 2011-02-16 | 李良伟 | Double flange transmission joint |
| CN201954177U (en) * | 2011-02-28 | 2011-08-31 | 北京工业大学 | Self sealing compensation device of fluid conveying pipeline |
| CN202158292U (en) * | 2011-06-22 | 2012-03-07 | 中色科技股份有限公司 | Anti-loose hydraulic pipe connector |
| CN202327418U (en) * | 2011-12-01 | 2012-07-11 | 孟祥勇 | Pipe union |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5297061B2 (en) * | 2008-03-25 | 2013-09-25 | 三菱重工業株式会社 | Flange joint structure |
-
2012
- 2012-10-18 CN CN201210362665.8A patent/CN102878365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2835762Y (en) * | 2005-10-31 | 2006-11-08 | 许智远 | Ball type joint for high pressure single flow water mist fire suppression device |
| CN201748073U (en) * | 2010-07-14 | 2011-02-16 | 李良伟 | Double flange transmission joint |
| CN201954177U (en) * | 2011-02-28 | 2011-08-31 | 北京工业大学 | Self sealing compensation device of fluid conveying pipeline |
| CN202158292U (en) * | 2011-06-22 | 2012-03-07 | 中色科技股份有限公司 | Anti-loose hydraulic pipe connector |
| CN202327418U (en) * | 2011-12-01 | 2012-07-11 | 孟祥勇 | Pipe union |
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| Publication number | Publication date |
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| CN102878365A (en) | 2013-01-16 |
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