CN202972349U - High-temperature-resistant axial-type expansion joint - Google Patents
High-temperature-resistant axial-type expansion joint Download PDFInfo
- Publication number
- CN202972349U CN202972349U CN 201220516279 CN201220516279U CN202972349U CN 202972349 U CN202972349 U CN 202972349U CN 201220516279 CN201220516279 CN 201220516279 CN 201220516279 U CN201220516279 U CN 201220516279U CN 202972349 U CN202972349 U CN 202972349U
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- China
- Prior art keywords
- honeycomb duct
- expansion joint
- bellows
- adapter
- holdfast
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- Expired - Fee Related
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- Thermal Insulation (AREA)
Abstract
The utility model discloses a high-temperature-resistant axial-type expansion joint. The expansion joint includes connecting pipes, circular sleeves, a left diversion pipe, a corrugated pipe, filling material, a right diversion pipe, anchoring nails and lining material, wherein one ends with flange edges of the left diversion pipe and the right diversion pipe perform coaxial movement outwards in a clearance fit manner; the connecting pipes are respectively sleeved on and are in sealed connection with the outer walls of the flange edges; the circular sleeves are connected to the outer walls of the connecting pipes in a sealed manner; the two end edges of the corrugated pipe are respectively connected with the circular sleeves on the two sides in a sealed manner to form an axial displacement structure of the corrugated pipe; the filling material is filled in the inner chamber of the corrugated pipe to form a thermal insulation structure; the Y-shaped anchoring nails are uniformly distributed on the inner hole walls at the ends parts of the connecting pipes; the preset anchoring nails are used as a framework of the inner-filled lining material during field installation of a project; and the heat of the lining material of a filled liner bushing structure prevent heat of medium from expanding outside. By arranging a dual-channel heat-resisting thermal insulating structure, instability accidents caused by superheat of the corrugated pipe can be avoided, and normal operation of the expansion joint can be ensured.
Description
Technical field
The utility model relates to a kind of pipe safety device, and specifically, the utility model relates to a kind of axial expansion joint of built-in heat-resisting heat isolating structure.
Background technique
Modern cement manufacturing industry uses advanced multistage preheating predecomposition rotary kiln to produce cement usually, transmits the grog of output between rotary kiln by pipeline, and the not only energy-conservation but also environmental protection of this kind high efficiency of transmission mode now is used widely.Under normal circumstances just from the clinker temperature of rotary kiln output more than 1000 ℃, oneself also passive heating when pipeline continues the transmission high temperature chamotte, pipeline heats up and produces corresponding axial deformation and end thrust.In pipeline, the configuration expansion joint is exactly to be used for absorbing or compensating axial distortion and end thrust, with the safe operation of protection pipeline.But, also there is the flimsy problem of expansion joint in practical application, its reason is that on market, the existing goods expansion joint lacks the thermal insulation thermal protection struc ture, influenced by environmental temperature, particularly the bellows in expansion joint is a kind of thin-walled elastic compensating element, when the expansion joint temperature reaches clinker temperature, and the easy unstability of the thin-wall corrugated tube that is heated, in a single day bellows produces plastic deformation and just loses due elastic compensating effect, and expansion joint lost efficacy and makes the ducts operation bring potential safety hazard.
The model utility content
The utility model proposes a kind of high temperature resistant axial expansion joint by the heat-resisting heat-insulating layer of liner mainly for the deficiencies in the prior art, and this is simple in structure, and good heat-insulation effect can effectively protect bellows that overheated destabilization problems does not occur.
The utility model is achieved through the following technical solutions technical goal.
High temperature resistant axial expansion joint, it comprises adapter, ring set, left honeycomb duct, bellows, filler, right honeycomb duct, holdfast and wadding.Described adapter and left honeycomb duct, right honeycomb duct are all straight-through pipes that an end is provided with flange edge, and left honeycomb duct and right honeycomb duct have an end of flange edge to make coaxial fit outwardly, and the adapter in left side is sleeved on left honeycomb duct flange edge outer wall and is tightly connected.Described ring set is sealedly connected on to be taken on outer wall, and limit, bellows two ends is tightly connected with the ring set of both sides respectively, forms bellows axial displacement structure.Its improvements are: described filler is thermal-protective material, and filler plugs is contained in the bellows inner chamber and consists of heat-insulating structure.Described left honeycomb duct internal diameter utilizes both superposition section matching gap conducting bellows inner chambers than the large 5.0mm～10mm of right honeycomb duct external diameter.Described adapter end ring inner hole wall is by the long holdfast of the uniform Y shape of arc length 15mm～25mm, and the holdfast fork that presets is radially towards the medial axis, when holdfast is installed as engineering site in the skeleton of patching material, the wadding of warding off into bush structure intercepts the medium heat and conducts adapter.
The filler that uses in said structure is aluminosilicate fiber cotton, and wadding is peracid aluminium refractory fiber mud.
The utility model compared with prior art has following good effect:
1, the cotton-shaped heat-resistant filler of bellows liner, simple in structure, thermal insulation is effective, can avoid occuring the overheated destabilization problems of bellows.
2, cotton-shaped heat-resistant filler has the elastic deformability, is built in both thermal insulations in the bellows inner chamber, does not also affect the function of expansion joint nose balance or absorption end thrust.
3, in the end of two pipe nipples, the ring inner hole wall is warded off into the thermal insulation layer of bush structure with wadding, greatly reduce high temperature media to the heat affecting of expansion joint.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
The below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
High temperature resistant axial expansion joint embodiment latus rectum shown in Figure 1 is 1050mm, and it comprises adapter 1, ring set 2, left honeycomb duct 3, bellows 4, filler 5, right honeycomb duct 6, holdfast 7 and wadding 8.Described adapter 1 and left honeycomb duct 3, right honeycomb duct 6 are all straight-through pipes that an end is provided with flange edge, left honeycomb duct 3 and right honeycomb duct 6 have an end of flange edge to make coaxial fit outwardly, the adapter 1 in left side is sleeved on left honeycomb duct 3 flange edge outer walls and is tightly connected, and the adapter 1 on right side is sleeved on right honeycomb duct 6 flange edge outer walls and also is tightly connected.Described ring set 2 is sealedly connected on to be taken on 1 outer wall, and bellows 4 limits, two ends are tightly connected with the ring set 2 of both sides respectively, form bellows 4 axial displacement structures.The filler 5 of plug dress is aluminosilicate fiber cotton in bellows 4 inner chambers, the heat-insulating structure that the filler 5 of plug dress consists of bellows 4 protections.Described left honeycomb duct 3 internal diameters utilize inside and outside the above-mentioned cavity of both superposition section matching gap conductings free-extension when making bellows 4 nose balance than the right honeycomb duct 6 large 6.0mm of external diameter.Described adapter 1 end ring inner hole wall is by the holdfast 7 of the uniform Y shape of arc length 18mm, holdfast 7 forks that preset are radially towards the medial axis, the skeleton of patching material 8 in when holdfast 7 is installed as engineering site, skeleton increases the adhesion of wadding 8, and the wadding 8 of warding off into bush structure intercepts medium heat unofficial biography and leads.The utility model avoids compensating element bellows 4 that the thermal run away accident occured by the heat-resisting heat isolating structure of two pass is set, and guarantees that expansion joint keeps design function.
The supporting circular pipe of above-described embodiment, its expansion joint agent structure are circular.Demand supporting according to the user can be made into rectangle, and the rectangle expansion joint still has the constructed effect of the present embodiment.The rectangle expansion joint is a kind of modified product of circular expander joint, still belongs to protection domain of the present utility model.
Claims (3)
1. high temperature resistant axial expansion joint, it comprises adapter (1), ring set (2), left honeycomb duct (3), bellows (4), filler (5), right honeycomb duct (6), holdfast (7) and wadding (8); Described adapter (1) and left honeycomb duct (3), right honeycomb duct (6) are all straight-through pipes that an end is provided with flange edge, left honeycomb duct (3) and right honeycomb duct (6) have an end of flange edge to make coaxial fit outwardly, and the adapter in left side (1) is sleeved on left honeycomb duct (3) flange edge outer wall and is tightly connected; Described ring set (2) is sealedly connected on adapter (1) outer wall, bellows (4) limit, two ends is tightly connected with the ring set (2) of both sides respectively, form bellows (4) axial displacement structure, it is characterized in that: described filler (5) is thermal-protective material, and filler (5) plug is contained in and consists of heat-insulating structure in bellows (4) inner chamber; Described left honeycomb duct (3) internal diameter utilizes both superposition section matching gap conducting bellows (4) inner chambers than the large 5.0mm～10mm of right honeycomb duct (6) external diameter; Described adapter (1) end ring inner hole wall is by the long holdfast (7) of the uniform Y shape of arc length 15mm～25mm, the holdfast that presets (7) fork is radially towards the medial axis, the skeleton of patching material (8) in when holdfast (7) is installed as engineering site, the wadding (8) of warding off into bush structure intercepts the conduction of medium heat and takes over (1).
2. high temperature resistant axial expansion joint according to claim 1, it is characterized in that: described filler (5) is aluminosilicate fiber cotton.
3. high temperature resistant axial expansion joint according to claim 1, it is characterized in that: described wadding (8) is peracid aluminium refractory fiber mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516279 CN202972349U (en) | 2012-09-20 | 2012-09-20 | High-temperature-resistant axial-type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516279 CN202972349U (en) | 2012-09-20 | 2012-09-20 | High-temperature-resistant axial-type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202972349U true CN202972349U (en) | 2013-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220516279 Expired - Fee Related CN202972349U (en) | 2012-09-20 | 2012-09-20 | High-temperature-resistant axial-type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202972349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913711A (en) * | 2012-09-20 | 2013-02-06 | 江苏永昌膨胀节有限公司 | High temperature resistant axial expansion joint |
| CN109751472A (en) * | 2019-01-28 | 2019-05-14 | 秦皇岛市泰德管业科技有限公司 | A kind of high temperature high voltage resistant flexibility heat insulation structural and expansion joint |
| CN114857376A (en) * | 2022-05-10 | 2022-08-05 | 上海凌瀚船舶科技有限公司 | Expansion joint for liquefied natural gas ship |
-
2012
- 2012-09-20 CN CN 201220516279 patent/CN202972349U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913711A (en) * | 2012-09-20 | 2013-02-06 | 江苏永昌膨胀节有限公司 | High temperature resistant axial expansion joint |
| CN109751472A (en) * | 2019-01-28 | 2019-05-14 | 秦皇岛市泰德管业科技有限公司 | A kind of high temperature high voltage resistant flexibility heat insulation structural and expansion joint |
| CN109751472B (en) * | 2019-01-28 | 2024-03-15 | 秦皇岛市泰德管业科技有限公司 | High-temperature-resistant high-pressure-resistant flexible heat insulation structure and expansion joint |
| CN114857376A (en) * | 2022-05-10 | 2022-08-05 | 上海凌瀚船舶科技有限公司 | Expansion joint for liquefied natural gas ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |