CN102720915A - Thermal insulation expansion joint of reducing adapter tube - Google Patents
Thermal insulation expansion joint of reducing adapter tube Download PDFInfo
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- CN102720915A CN102720915A CN2012102372122A CN201210237212A CN102720915A CN 102720915 A CN102720915 A CN 102720915A CN 2012102372122 A CN2012102372122 A CN 2012102372122A CN 201210237212 A CN201210237212 A CN 201210237212A CN 102720915 A CN102720915 A CN 102720915A
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- reducing
- thermal insulation
- heat
- expansion joint
- insulating layer
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Abstract
The invention discloses a thermal insulation expansion joint of a reducing adapter tube. The expansion joint is characterized by comprising a corrugated tube (2); both ends of the corrugated tube (2) are respectively connected with two reducing adapter tubes (1); the inner sides of the two reducing adapter tubes (1) are respectively attached and connected to the end part of two reducing lining tubes; and a thermal insulation layer is arranged in a thermal insulation cavity formed among the corrugated tube (2), the two reducing adapter tubes (1) and the two reducing lining tubes. The invention can fully meet the requirements of full-load and long-period safe operation of a process pipe of a petrochemical engineering device at high temperature and high flow rate; in normal operating state, the expansion joint has no abnormal deformation and the medium flows stably, and the surface temperature of the corrugated tube does not exceed the designed temperature during high-temperature operation for a long time; the reducing combinational lining meets the requirement of deformation coordination of the expansion joint, does not fall off and has no abnormal deformation during high-temperature operation for a long time; and the reducing adapter tube has no local deformation or crack during high-temperature operation for a long time.
Description
Technical field
The present invention relates to a kind of petrochemical plant process pipe, specifically a kind of expansion joint.
Background technique
The technology of petrochemical plant process pipe and design condition are comparatively harsh; Design temperature is higher, reaches 600～750, because medium temperature, flow velocity are higher; Bellows need carry out effective thermal insulation and prevent that material from gathering, and the design of butt tube and inside lining sleeve all has the requirement of reducing particular design.Normal conditions adopts the method for segmentation welding to reach the purpose of taking over reducing, and this can cause that at high temperature the discontinuous stress that brings of structure is concentrated, makes the adapter reduction in strength, might produce local deformation or crackle, brings potential safety hazard thus.Existing technology does not have the expansion joint that satisfies above requirement as yet.
Summary of the invention
The object of the invention is exactly the deficiency to above-mentioned existing technology, and providing a kind of can work under hot environment for a long time, and the reducing that flow resistance is little is taken over thermal insulation type expansion joint.
The technological scheme that the present invention adopts is following:
A kind of reducing is taken over thermal insulation type expansion joint; It is characterized in that it comprises bellows; The two ends of bellows are taken over two sections reducings respectively and are linked to each other; Said two sections reducings are taken over the inboard and are fitted with two sections reducing internal lining pipe ends respectively and link to each other, are provided with heat-insulating layer in the thermal insulation cavity that forms between said bellows, two sections reducing adapters and the two sections reducing internal lining pipes.
Said two sections reducings are taken over circular hole or the elliptical aperture plug welding that inboard applying position with two sections reducing internal lining pipes is equipped with circumference uniform distribution.
Said two sections relative ends of reducing internal lining pipe are crisscross arranged, and wherein variable-diameter structure is adopted at the staggered position of a reducing internal lining pipe.
Said heat-insulating layer is arranged to three sections, and being positioned at the inboard heat-insulating layer three structure from-inner-to-outers of bellows is that innermost layer adopts ceramic fiber blanket, the parcel silicon cloth that ceramic fiber blanket is outer, and silicon cloth is wrapped with Stainless Steel Cloth outward, silicon cloth on the Stainless Steel Cloth outer wrap; Heat-insulating layer two structures that are positioned at said heat-insulating layer three two ends are that ceramic fiber blanket or ceramic fiber are cotton; The heat-insulating layer one that is positioned at said heat-insulating layer two outboard ends is heat-resisting silicon cloth.
Said heat-insulating layer one adopts the clamp of circumference uniform distribution to fix with the intersection of heat-insulating layer two.
Beneficial effect of the present invention has:
Can satisfy the requirement of the petrochemical plant process pipe full and down long period safe operation of high temperature, high flow rate fully; The no abnormal distortion of expansion joint under normal operating state, media flow are steady; Work under long term high temperature, the bellows surface temperature can not exceed design temperature; The reducing combined inner lining satisfies expansion joint compatibility of deformation requirement, under the long term high temperature work do not come off, no abnormal distortion; Work under long term high temperature, reducing is taken over local deformation or crackle can not occur.
Reducing of the present invention is taken over and is adopted twice variable-diameter structure, reaches distortion and is fusiform purpose.Avoided conventional method to reach effectively taking over the reducing purpose to bring at high temperature the discontinuous stress that causes of structure to concentrate, caused taking over reduction in strength and the consequence of bringing potential safety hazard with the segmentation welding.The present invention's employing is fusiform reducing adapter and has solved fully under the high temperature because the discontinuous potential safety hazard of bringing of structure.Adopt left and right sides reducing internal lining pipe combination to reach the purpose of water conservancy diversion, thermal insulation, satisfy compatibility of deformation simultaneously and flow resistance is dropped to minimum;
Liner reducing end, the left and right sides and reducing are taken over the welding of fitting; Outside the circumferential weld welding of routine; In the circular hole or the elliptical aperture plug welding that have increased by one group of circumference uniform distribution apart from weld seam mutually nearby; The hidden danger that the liner of having avoided conventional welding often to occur comes off is guaranteed the proper functioning of liner under the long term high temperature environment of product of the present invention; Adopt by three parts in the specific combination thermal insulation structure of different parts in the cavity that forms between combined inner lining and reducing adapter and the bellows with the different materials combination; This specific combination thermal insulation structure thermal insulation effect stability is reliable; Satisfy the thermal insulation requirement when being out of shape under the expansion joint working state, can guarantee that the surface temperature of bellows is no more than design temperature under long term high temperature.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done explanation further:
As shown in Figure 1, bellows of the present invention 2 two ends are taken over 1 with reducing and are connected; Reducing is taken over 1 and is fitted and link to each other with reducing internal lining pipe 1, reducing internal lining pipe 24 respectively, and along circumferential openings, aperture portion is taken over 1 with reducing and linked to each other Kong Zhongwei circular hole or elliptical aperture plug welding 9 at the reducing sticking part for reducing internal lining pipe 1, reducing internal lining pipe 24; Reducing internal lining pipe 1, reducing internal lining pipe 24 relative ends are pressed like the mutual combined crosswise of Fig. 1; With reducing adapter 1, thermal insulation cavity of bellows 2 common compositions; This thermal insulation cavity is divided into three parts; Heat-insulating layer 1 adopts heat-resisting silicon cloth to fill at position as shown in the figure full, and fix with the clamp 8 of the equal portion of circumference at the heat-insulating layer 1 and the intersection of heat-insulating layer 26; Heat-insulating layer 26 adopts the cotton complete filling of ceramic fiber blanket or ceramic fiber full at position as shown in the figure; Heat-insulating layer 37 wraps up ceramic fiber blanket at position as shown in the figure with silicon cloth, outside silicon cloth, is wrapped with Stainless Steel Cloth, forms a thermal insulation parcel at Stainless Steel Cloth outer wrap silicon cloth at last, and this thermal insulation parcel will fill up whole space as shown in the figure.
The fusiform reducing of the present invention is taken over and the composite structure of reducing internal lining pipe can reach the thermal insulation of bellows part and prevent the purpose that material gathers, and can effectively flow resistance be reduced to minimum again, and guarantee that the liner of product of the present invention does not come off under the long term high temperature environment.
The undeclared part of other that the present invention relates to is identical with existing technology.
Claims (5)
1. a reducing is taken over thermal insulation type expansion joint; It is characterized in that it comprises bellows (2); The two ends of bellows (2) are taken over (1) with two sections reducings respectively and are linked to each other; Said two sections reducings are taken over (1) inboard and are fitted with two sections reducing internal lining pipe ends respectively and link to each other, are provided with heat-insulating layer in the thermal insulation cavity that forms between said bellows (2), two sections reducing adapters (1) and the two sections reducing internal lining pipes.
2. reducing according to claim 1 is taken over thermal insulation type expansion joint, it is characterized in that the inboard applying position with two sections reducing internal lining pipes of said two sections reducings adapters (1) is equipped with the circular hole or the elliptical aperture plug welding (9) of circumference uniform distribution.
3. reducing according to claim 1 is taken over thermal insulation type expansion joint, it is characterized in that said two sections relative ends of reducing internal lining pipe are crisscross arranged, and wherein variable-diameter structure is adopted at the staggered position of a reducing internal lining pipe.
4. reducing according to claim 1 is taken over thermal insulation type expansion joint; It is characterized in that said heat-insulating layer is arranged to three sections; Being positioned at inboard heat-insulating layer three (7) the structure from-inner-to-outers of bellows (2) is that innermost layer adopts ceramic fiber blanket; The parcel silicon cloth that ceramic fiber blanket is outer, silicon cloth is wrapped with Stainless Steel Cloth outward, silicon cloth on the Stainless Steel Cloth outer wrap; Heat-insulating layer two (6) structures that are positioned at said heat-insulating layer three (7) two ends are that ceramic fiber blanket or ceramic fiber are cotton; The heat-insulating layer one (5) that is positioned at said heat-insulating layer two (6) outboard ends is heat-resisting silicon cloth.
5. reducing according to claim 4 is taken over thermal insulation type expansion joint, it is characterized in that the said heat-insulating layer one (5) and the intersection of heat-insulating layer two (6) adopt the clamp (8) of circumference uniform distribution to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210237212.2A CN102720915B (en) | 2012-07-10 | 2012-07-10 | Thermal insulation expansion joint of reducing adapter tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210237212.2A CN102720915B (en) | 2012-07-10 | 2012-07-10 | Thermal insulation expansion joint of reducing adapter tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720915A true CN102720915A (en) | 2012-10-10 |
| CN102720915B CN102720915B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210237212.2A Active CN102720915B (en) | 2012-07-10 | 2012-07-10 | Thermal insulation expansion joint of reducing adapter tube |
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| Country | Link |
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| CN (1) | CN102720915B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117091019A (en) * | 2023-10-18 | 2023-11-21 | 沈阳晨光弗泰波纹管有限公司 | Expansion absorption device and gas turbine exhaust system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023832A (en) * | 1974-09-18 | 1977-05-17 | S.A. Des Anciens Etablissements Paul Wurth | Apparatus for the transmission of heated fluid |
| EP0445352B1 (en) * | 1990-03-09 | 1993-02-24 | IWK Regler und Kompensatoren GmbH | Flexible pipe component with heat insulation |
| JP2000500848A (en) * | 1995-11-28 | 2000-01-25 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | Flexible fitting |
| CN2364316Y (en) * | 1998-01-15 | 2000-02-16 | 南京晨光东螺波纹管有限公司 | Cooled high-temp. bellows compensator |
| DE20003386U1 (en) * | 2000-02-24 | 2000-05-18 | Feodor Burgmann Dichtungswerke GmbH & Co, 82515 Wolfratshausen | Decoupling element for vibrations in exhaust pipes of internal combustion engines |
| CN201269380Y (en) * | 2008-05-20 | 2009-07-08 | 赵有德 | Corrugated compensator with stiffness reinforced flow guiding casing tube |
| CN201496714U (en) * | 2009-09-08 | 2010-06-02 | 泰州市新方圆补偿器制造有限公司 | High temperature resistant corrugated expansion joint |
| CN202252580U (en) * | 2011-10-29 | 2012-05-30 | 重庆川仪自动化股份有限公司 | High-temperature-resistant metallic corrugated expansion joint |
| CN202708447U (en) * | 2012-07-10 | 2013-01-30 | 南京晨光东螺波纹管有限公司 | Thermal insulation expansion joint with reducing connecting pipes |
-
2012
- 2012-07-10 CN CN201210237212.2A patent/CN102720915B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023832A (en) * | 1974-09-18 | 1977-05-17 | S.A. Des Anciens Etablissements Paul Wurth | Apparatus for the transmission of heated fluid |
| EP0445352B1 (en) * | 1990-03-09 | 1993-02-24 | IWK Regler und Kompensatoren GmbH | Flexible pipe component with heat insulation |
| JP2000500848A (en) * | 1995-11-28 | 2000-01-25 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | Flexible fitting |
| CN2364316Y (en) * | 1998-01-15 | 2000-02-16 | 南京晨光东螺波纹管有限公司 | Cooled high-temp. bellows compensator |
| DE20003386U1 (en) * | 2000-02-24 | 2000-05-18 | Feodor Burgmann Dichtungswerke GmbH & Co, 82515 Wolfratshausen | Decoupling element for vibrations in exhaust pipes of internal combustion engines |
| CN201269380Y (en) * | 2008-05-20 | 2009-07-08 | 赵有德 | Corrugated compensator with stiffness reinforced flow guiding casing tube |
| CN201496714U (en) * | 2009-09-08 | 2010-06-02 | 泰州市新方圆补偿器制造有限公司 | High temperature resistant corrugated expansion joint |
| CN202252580U (en) * | 2011-10-29 | 2012-05-30 | 重庆川仪自动化股份有限公司 | High-temperature-resistant metallic corrugated expansion joint |
| CN202708447U (en) * | 2012-07-10 | 2013-01-30 | 南京晨光东螺波纹管有限公司 | Thermal insulation expansion joint with reducing connecting pipes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117091019A (en) * | 2023-10-18 | 2023-11-21 | 沈阳晨光弗泰波纹管有限公司 | Expansion absorption device and gas turbine exhaust system |
| CN117091019B (en) * | 2023-10-18 | 2024-02-23 | 沈阳晨光弗泰波纹管有限公司 | Expansion absorption device and gas turbine exhaust system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102720915B (en) | 2014-04-16 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Niu Yuhua Inventor after: Zhou Mingsheng Inventor after: Li Liang Inventor after: Zhang Qingwen Inventor after: Xu Rufeng Inventor after: Zhang Ying Inventor after: Fan Hui Inventor after: Wang Youlong Inventor before: Niu Yuhua Inventor before: Zhou Mingsheng Inventor before: Li Liang Inventor before: Zhang Qingwen Inventor before: Xu Rufeng Inventor before: Zhang Ying Inventor before: Fan Hui Inventor before: Wang Youlong |
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