CN203730993U - Corrugated expansion joint for ash smoothing vertical pipe - Google Patents
Corrugated expansion joint for ash smoothing vertical pipe Download PDFInfo
- Publication number
- CN203730993U CN203730993U CN201420127222.5U CN201420127222U CN203730993U CN 203730993 U CN203730993 U CN 203730993U CN 201420127222 U CN201420127222 U CN 201420127222U CN 203730993 U CN203730993 U CN 203730993U
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- CN
- China
- Prior art keywords
- tube
- outer tube
- bellows
- corrugated
- expansion joint
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- 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.)
- Withdrawn - After Issue
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- Thermal Insulation (AREA)
- Joints Allowing Movement (AREA)
Abstract
The utility model discloses a corrugated expansion joint for an ash smoothing vertical pipe. The corrugated expansion joint comprises an inner tube, supporting plates, a corrugated tube, an outer tube, filler and a partitioning sleeve, wherein the supporting plates are respectively connected to the upper and lower ends of the vertically-arranged corrugated tube in a sealed manner, the outer tube is upwardly inserted into the internal chamber of the corrugated tube from an internal hole of the supporting plate of the bottom layer, the inner tube is inserted into the internal chamber of the outer tube from an internal hole of the supporting plate of the upper layer, and the inner tube and the outer tube are in clearance sleeve fit and are respectively connected with bonding parts of the assorted supporting plates, so as to form a corrugated tube based compensation structure; a space between the internal wall of the corrugated tube and the external wall of the outer tube is partitioned into two spaces by the partitioning sleeve which is fixedly connected, the space located at one side of the corrugated tube is lined with the filler so as to form an outer-layer heat insulating structure, and an inner-layer heat insulating structure which takes air as a medium is formed between the internal wall of the partitioning sleeve and the external wall of the outer tube. Two heat insulating layers are placed in the corrugated expansion joint, so that the corrugated tube can be effectively protected from overheating, the contact between the corrugated tube and a conveyed granular material is avoided, unnecessary wear is eliminated structurally, and the service life of the corrugated tube is greatly prolonged.
Description
Technical field
The utility model relates to a kind of pipe safety device, and specifically, the utility model relates to a kind of expansion joint.On the supporting pipeline before fluid bed boiler furnace import of this expansion joint, be vertically-arranged and install.
Background technique
The installation that conventionally fixes of the supporting material returning device of fluidized bed boiler, along with temperature variation, certainly leads to the distortion of expanding with heat and contract with cold accordingly during boiler operatiopn in pipe-line system.Normal physical deformation mainly embodies by end thrust, and end thrust forms security threat to material returning device and pipe-line system.In engineering, generally between the supporting material returning device of fluidized bed boiler and burner hearth import, configure expansion joint, with this, absorb or compensating axial thrust and axial displacement.The straight-through type corrugated expansion joint flexibility that prior art is generally applied is fine, has the features such as flexible movements, compensation rate are large, can play safety guarantee effect.But; fluidized bed boiler operating temperature up to 850 ℃～1200 ℃; cause periphery operating mode very severe; the straight-through type corrugated expansion joint of adding prior art lacks the Thermal Protection Structural to compensating element bellows; the bellows of thin-walled is easily heated; once ambient temperature surpasses bellows license operating temperature, just causes unstability accident, thereby causes corrugated expansion joint to lose compensate function.
Model utility content
The utility model is mainly for the deficiencies in the prior art, propose a kind of simple in structure, seal tight, high temperature resistant, compensation flexibly along grey standpipe corrugated expansion joint.
The utility model is achieved through the following technical solutions technical goal.
Along grey standpipe corrugated expansion joint, it comprises inner tube, dunnage, bellows, outer tube, filler and spacer.Described bellows is cylindric, the upper and lower two ends of bellows of the vertically-arranged dunnage that is tightly connected respectively.Described inner and outer tubes are circular straighttube, outer tube is upwards inserted into bellows inner chamber from the dunnage endoporus of bottom, inner tube is inserted into outer tube bore from the dunnage endoporus on upper strata, inner tube and outer ligament fit, inner and outer tubes connect and compose and take bellows as main collocation structure with supporting dunnage connecting part respectively.Its improvements are: the spacer being connected that is fixed between bellows inwall and outer tube outer wall is separated into two spaces, the space liner filler that is positioned at bellows one side forms outer heat-insulating structure, and the alternate place of spacer inwall and outer tube outer wall forms take the inner layer heat-insulation structure that air is medium.
The filler of applying in said structure, is a kind of ceramic fiber, and this material is flexible body, 850 ℃～1300 ℃ of heatproofs.
The utility model compared with prior art, has following good effect:
1, heat-insulating structure is simple, making is easy;
2, in collocation structure, take spacer is divided into twice thermal-protective coating and jointly protects bellows, good heat-insulation effect as boundary;
3, outside the decapacitation of built-in twice thermal-protective coating effectively prevents that bellows is overheated, also avoid bellows directly to contact with a material material for transmission, from structure, eliminated unnecessary wearing and tearing, greatly improve the working life of bellows, improve the working life of expansion joint.
Accompanying drawing explanation
Fig. 1 is that the utility model structure is partly cutd open schematic diagram.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Suitable grey standpipe shown in Fig. 1 is arranged between the supporting material returning device of fluidized bed boiler and burner hearth import with corrugated expansion joint, and it comprises inner tube 1, dunnage 2, bellows 3, outer tube 4, filler 5 and spacer 6.Described bellows 3 is cylindric, and the bellows of vertically-arranged is the two ends dunnage 2 that is tightly connected respectively Shang Xia 3.Described inner tube 1 and outer tube 4 are circular straighttube, outer tube 4 is upwards inserted into bellows 3 inner chambers from dunnage 2 endoporus of bottom, inner tube 1 is inserted into outer tube 4 inner chambers from dunnage 2 endoporus on upper strata, inner tube 1 and outer tube 4 gap fits, inner tube 1 and outer tube 4 connect and compose and take bellows 3 as main collocation structure with supporting dunnage 2 connecting parts respectively.The utility model is keeping on the basis of original compensate function, and emphasis is strengthened the thermal insulation protection to bellows 3, and the improvement on related structure is mainly reflected in collocation structure and is provided with two-layer heat-insulating structure, and concrete structure is as follows.
First between bellows 3 inwalls and outer tube 4 outer walls, be fixedly connected with spacer 6, by spacer 6, be separated into two separate space, the space liner filler 5 that is positioned at bellows 3 one sides forms outer heat-insulating structure, and the filler 5 in the present embodiment is that a kind of resistance to high temperature is good, and is flexible ceramic fiber.The filler 5 of liner stops inner heat to bellows 3 conduction, thereby effectively protects bellows 3 not overheated.Between spacer 6 inwalls and outer tube 4 outer walls, large spacing is vacant on the other hand, forms to take the inner layer heat-insulation structure that air is medium.The decapacitation of built-in twice thermal-protective coating effectively protects bellows 3 not overheated, also avoids bellows 3 directly to contact with a material material for transmission, from structure, has eliminated unnecessary wearing and tearing, greatly improves the working life of bellows 3.Bellows 3 is members the weakest in expansion joint, and be exactly the working life of improving expansion joint the working life of improving bellows 3, can reduce thus user's supporting cost, improves operational efficiency.
Claims (2)
1. along a grey standpipe corrugated expansion joint, it comprises inner tube (1), dunnage (2), bellows (3), outer tube (4), filler (5) and spacer (6); Described bellows (3) is cylindric, the upper and lower two ends of the bellows of vertically-arranged (3) dunnage (2) that is tightly connected respectively; Described inner tube (1) and outer tube (4) are circular straighttube, outer tube (4) is upwards inserted into bellows (3) inner chamber from dunnage (2) endoporus of bottom, inner tube (1) is inserted into outer tube (4) inner chamber from dunnage (2) endoporus on upper strata, inner tube (1) and outer tube (4) gap fit, inner tube (1) and outer tube (4) connect and compose and take the collocation structure of bellows (3) as leading with supporting dunnage (2) connecting part respectively; It is characterized in that: the spacer (6) being connected that is fixed between bellows (3) inwall and outer tube (4) outer wall is separated into two spaces, the space liner filler (5) that is positioned at bellows (3) one sides forms outer heat-insulating structure, and spacer (6) inwall place alternate with outer tube (4) outer wall forms take the inner layer heat-insulation structure that air is medium.
2. according to claim 1 along grey standpipe corrugated expansion joint, it is characterized in that: described filler (5) is ceramic fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127222.5U CN203730993U (en) | 2014-03-20 | 2014-03-20 | Corrugated expansion joint for ash smoothing vertical pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127222.5U CN203730993U (en) | 2014-03-20 | 2014-03-20 | Corrugated expansion joint for ash smoothing vertical pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730993U true CN203730993U (en) | 2014-07-23 |
Family
ID=51201068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420127222.5U Withdrawn - After Issue CN203730993U (en) | 2014-03-20 | 2014-03-20 | Corrugated expansion joint for ash smoothing vertical pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883830A (en) * | 2014-03-20 | 2014-06-25 | 江苏曙光压力容器有限公司 | Bellows expansion joint for ash smoothing vertical pipe |
| CN104696660A (en) * | 2015-03-27 | 2015-06-10 | 沈阳鑫博工业技术股份有限公司 | Double axial compensation type expansion joint |
-
2014
- 2014-03-20 CN CN201420127222.5U patent/CN203730993U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883830A (en) * | 2014-03-20 | 2014-06-25 | 江苏曙光压力容器有限公司 | Bellows expansion joint for ash smoothing vertical pipe |
| CN103883830B (en) * | 2014-03-20 | 2015-12-09 | 江苏曙光压力容器有限公司 | Along grey standpipe corrugated expansion joint |
| CN104696660A (en) * | 2015-03-27 | 2015-06-10 | 沈阳鑫博工业技术股份有限公司 | Double axial compensation type expansion joint |
| CN104696660B (en) * | 2015-03-27 | 2016-09-07 | 沈阳鑫博工业技术股份有限公司 | Dual axial offset-type expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |