CN201496714U - High temperature resistant corrugated expansion joint - Google Patents
High temperature resistant corrugated expansion joint Download PDFInfo
- Publication number
- CN201496714U CN201496714U CN2009202327173U CN200920232717U CN201496714U CN 201496714 U CN201496714 U CN 201496714U CN 2009202327173 U CN2009202327173 U CN 2009202327173U CN 200920232717 U CN200920232717 U CN 200920232717U CN 201496714 U CN201496714 U CN 201496714U
- Authority
- CN
- China
- Prior art keywords
- guide shell
- flow guiding
- guiding cylinder
- expansion joint
- connecting pipe
- 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.)
- Expired - Fee Related
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- Thermal Insulation (AREA)
- Joints Allowing Movement (AREA)
Abstract
The utility model discloses a high temperature resistant corrugated expansion joint which comprises a left connecting pipe, a corrugated pipe and a right connecting pipe which are hermetically connected in sequence. The inner wall of the left connecting pipe is fixedly connected with a flow guiding cylinder opened rightwards; the inner wall of the right connecting pipe is fixedly connected with an auxiliary flow guiding cylinder opened leftwards; the internal diameter of the auxiliary flow guiding cylinder with shorter length is larger than the external diameter of the flow guiding cylinder; and the flow guiding cylinder and the auxiliary flow guiding cylinder are coaxial and partially sleeved. Thermal insulating structures made of metal mesh hood thermal insulating materials are arranged in gaps among the left connecting pipe, the corrugated pipe and the right connecting pipe on the outer wall surfaces of the flow guiding cylinder and the auxiliary flow guiding cylinder. A sealing structure which is capable of axially and oppositely moving and is made of metal mesh hood thermal insulating materials is also arranged in the middle of a sleeving section of the flow guiding sleeve and the auxiliary flow guiding cylinder. Because the thermal insulating structures are arranged in the high temperature resistant corrugated expansion joint, the corrugated pipe is not influenced by medium temperature and still keeps enough structural strength; and the absorption or the compensation action is normally exerted, so that the safe operation of a pipeline is ensured.
Description
Technical field
The utility model relates to a kind of piping attachment, particularly a kind of pipe expansion joint.
Background technique
Steel making furnace is a kind of high temperature melting equipment, and its hot blast and flue gas efflux the pipeline work under bad environment, and pipeline produces corresponding expanding or compression deformation along with the fed sheet of a media temperature variation.Pipeline expands or compression deformation directly produces axial displacement and axial force, and these physical changes are to constitute one of pipe network instability, unsafe factor.Usually on the pipeline node location, expansion joint is set in the engineering, utilizes the plastic deformation characteristics of bellows, receive or compensate the axial displacement and the axial force of pipeline, directly improve the operation conditions of pipeline.Under the normal temperature operating mode, prior art products can be competent at working condition requirement fully, guarantees the safety of institute's distribution pipes.For the pipeline of fed sheet of a media greater than 1000 ℃, prior art products descends along with the temperature of fed sheet of a media increases gradually because of the intensity of flexible member bellows, until unstability, inefficacy.Prior art products is because of using at normal temperatures, and discomfort is combined into carries the pipeline of high temperature media supporting.
The model utility content
The utility model is primarily aimed at the shortcoming of prior art products non-refractory, proposes a kind of high-temperature resistant corrugated expansion joint with thermal insulation structure.This expansion joint is simple in structure, good heat-insulation effect, and bellows keeps design strength under worst hot case, and compensating movement is flexibly, reliably.
The utility model is achieved through the following technical solutions technical goal.
High-temperature resistant corrugated expansion joint, it comprises cylindrical shape left side adapter, bellows and right adapter that is tightly connected successively.Its improvements are: the fixedly connected guide shell towards right opening of described left nozzle inner wall, the fixedly connected secondary guide shell towards left opening of right nozzle inner wall, the short secondary guide shell internal diameter of length be greater than the guide shell external diameter, both coaxial and part fits.Gap between guide shell and secondary guide shell outer wall are to left side adapter, bellows and right nozzle inner wall, built-in thermal-protective material by the wire netting enclosure constitutes heat-insulating structure.Guide shell and secondary guide shell be mutually between the shrinking section, also is provided with by wire netting enclosure thermal-protective material to constitute the sealing configuration that can axially relatively move.
Thermal-protective material in the said structure is a kind of alumina-silicate ceramic fibre.At guide shell and the secondary guide shell stainless (steel) wire enclosure of the thermal-protective material between the shrinking section mutually, its right-hand member is by the annular boss block on the guide shell outer wall, and the boss height is greater than half of this gap.
The utility model compared with prior art has following good effect:
1, the bellows inwall is equipped with thermal-protective coating, and bellows is not directly influenced by the medium heat, still keeps design strength, still satisfies usage requirement under worst hot case.
2, guide shell and secondary guide shell mutually fit be the constituent element of heat-insulating structure, also be the constituent element of collocation structure, in the thermal insulation protection bellows, do not influence the nose balance motion.
3, at guide shell and secondary guide shell mutually between the shrinking section, the thermal-protective material that is provided with by the wire netting enclosure constitutes sealing configuration, and this structure had both limited medium and infiltrated, and prevented that also thermal-protective material is sucked out under negative pressure condition, had further promoted effect of heat insulation.
4, overall structure is simple, makes easily.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is an I place partial structurtes enlarged diagram among Fig. 1.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings below.
High-temperature resistant corrugated expansion joint shown in Figure 1 is used for the steel making furnace exhaust duct, and it comprises cylindrical shape left side adapter 1, bellows 8 and the right adapter 7 that is tightly connected successively.The fixedly connected guide shell 2 towards right opening of 1 inwall is taken on a described left side, and the right fixedly connected secondary guide shell 6 towards left opening of 7 inwalls of taking over, short secondary guide shell 6 internal diameters of length be greater than guide shell 2 external diameters, both coaxial and part fits.At guide shell 2 and secondary guide shell 6 shrinking section gap locations, be provided with by wire netting 4 enclosure thermal-protective materials 3 and constitute the sealing configuration that can axially relatively move, this structure is by annular boss 5 block on the guide shell 2 right-hand member outer walls, both stoped high temperature media infiltration in the pipeline, prevented also that thermal-protective material was sucked out under negative pressure condition.Be provided with two seals in the present embodiment, have better seal and mobility.The right side is taken over 1 in guide shell 2 and secondary guide shell 6 outer wall, bellows 8 and right take over 7 between the gap, liner constitutes heat-insulating structure by the thermal-protective material 3 of the wire netting enclosure, utilize thermal-protective material 3 to stop the heat of medium to conduct, guarantee that bellows 8 is not overheated to bellows 8.Wire netting 4 materials in the present embodiment are stainless steels, and thermal-protective material 3 is a kind of alumina-silicate ceramic fibres.
When the utility model is used, the temperature of pipeline internal medium is stopped by heat-insulating structure, and bellows 8 is given in non-conducting, and bellows 8 can overheatedly still not keep enough structural strengths, the effect of pipeline axial displacement and axial force is received or is compensated in normal performance, guarantees the safe operation of institute's distribution pipes.
Claims (3)
1. high-temperature resistant corrugated expansion joint, it comprises that a cylindrical shape left side that is tightly connected successively takes over (1), bellows (8) and right adapter (7); It is characterized in that: the fixedly connected guide shell towards right opening of (1) inwall (2) is taken on a described left side, the right fixedly connected secondary guide shell (6) of (7) inwall of taking over towards left opening, short secondary guide shell (6) internal diameter of length is greater than guide shell (2) external diameter, both coaxial and part fits; At guide shell (2) and secondary guide shell (6) outer wall (1), bellows (8) and right gap between (7) inwall, built-in thermal-protective material by the wire netting enclosure (3) the formation heat-insulating structure taken over are taken in a left side; Guide shell (2) and secondary guide shell (6) be mutually between the shrinking section, also is provided with by wire netting (4) enclosure thermal-protective material (3) to constitute the sealing configuration that can axially relatively move.
2. high-temperature resistant corrugated expansion joint according to claim 1 is characterized in that: described thermal-protective material (3) is a kind of alumina-silicate ceramic fibre.
3. high-temperature resistant corrugated expansion joint according to claim 1 is characterized in that: described guide shell (2) right output port outer wall is provided with annular boss (5), and boss (5) height is greater than guide shell (2) and secondary guide shell (6) half of the intersegmental crack of fit mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202327173U CN201496714U (en) | 2009-09-08 | 2009-09-08 | High temperature resistant corrugated expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202327173U CN201496714U (en) | 2009-09-08 | 2009-09-08 | High temperature resistant corrugated expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496714U true CN201496714U (en) | 2010-06-02 |
Family
ID=42439921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202327173U Expired - Fee Related CN201496714U (en) | 2009-09-08 | 2009-09-08 | High temperature resistant corrugated expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496714U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518901A (en) * | 2011-11-24 | 2012-06-27 | 陈墅庚 | Plunger type multifunctional pipeline compensator |
| CN102720915A (en) * | 2012-07-10 | 2012-10-10 | 南京晨光东螺波纹管有限公司 | Thermal insulation expansion joint of reducing adapter tube |
| CN102777726A (en) * | 2012-03-30 | 2012-11-14 | 南通三创机械制造有限公司 | High-temperature expansion joint |
| WO2015024271A1 (en) * | 2013-08-19 | 2015-02-26 | 甘肃华瑞农业股份有限公司 | Sealing apparatus for central pivot of circular sprinkling machine |
-
2009
- 2009-09-08 CN CN2009202327173U patent/CN201496714U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518901A (en) * | 2011-11-24 | 2012-06-27 | 陈墅庚 | Plunger type multifunctional pipeline compensator |
| CN102777726A (en) * | 2012-03-30 | 2012-11-14 | 南通三创机械制造有限公司 | High-temperature expansion joint |
| CN102720915A (en) * | 2012-07-10 | 2012-10-10 | 南京晨光东螺波纹管有限公司 | Thermal insulation expansion joint of reducing adapter tube |
| WO2015024271A1 (en) * | 2013-08-19 | 2015-02-26 | 甘肃华瑞农业股份有限公司 | Sealing apparatus for central pivot of circular sprinkling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20100908 |