CN103016889B - Non-metal expansion joint for slag discharge pipeline of boiler - Google Patents
Non-metal expansion joint for slag discharge pipeline of boiler Download PDFInfo
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- CN103016889B CN103016889B CN201210527868.8A CN201210527868A CN103016889B CN 103016889 B CN103016889 B CN 103016889B CN 201210527868 A CN201210527868 A CN 201210527868A CN 103016889 B CN103016889 B CN 103016889B
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Abstract
The invention relates to a non-metal high-temperature resistant expansion joint for a slag discharge pipeline of a boiler, belonging to the technical field of conveying pipelines. The non-metal expansion joint comprises an rectangular upper frame and a rectangular lower frame which are respectively connected to an upper pipeline and a lower pipeline; the flow area of the upper frame is smaller than that of the lower frame, the average spacing between the circumference of the upper frame and the circumference of the lower frame is 1-1.5 times that of the axial displacement, a lower horizontal turnup flange is arranged on the circumference of the upper frame, an upper horizontal turnup flange is arranged on the circumference of the lower frame, a concentric-shaped flexible ring strip is fixed between the upper horizontal turnup flange and the lower horizontal turnup flange, and a concentric-shaped heat insulation layer is fixed at the inner side of the flexible ring strip. The expansion joint structure which radially extends, disclosed by the invention, breaks through the traditional expansion joint which axially extends. The non-metal high-temperature resistant expansion joint disclosed by the invention effectively overcomes the defect that an internal heat insulation layer of the conventional non-metal expansion joint of the slag discharge pipe of the boiler is incapable of resetting due to large compression displacement and can effectively operate for a long time. In addition, the concentric-shaped structure can absorb larger axial displacement within a shorter axial length and is very compact in structure.
Description
Technical field
The present invention relates to a kind of expansion joint, especially a kind of resistant to elevated temperatures boiler slag removal pipeline non-metal expansion joint, belongs to conveyance conduit technical field.
Background technique
Expansion joint is the conventional member of pipeline joint.According to the applicant understood, existing boiler slag removal pipeline and furnace bottom joint temperature be high, expand with heat and contract with cold and axial displacement that boiler sedimentation causes large, conventionally adopt the insulation expansion joint shown in Fig. 1 to connect.The expansion joint of this type of rectangular cross-section pipeline by soft ring band 3, upper and lower inside lining sleeve 7 and be clamped in astragal and inside lining sleeve between heat-insulating layer 4 form, be engaged between upper and lower pipeline in the mode axially connecting.In the time absorbing axial displacement, the heat-insulating layer of insulation expansion joint inside must be compressed.And through past compound compression, heat-insulating layer is difficult to keep original uniform state, when heat-insulating layer after compression reaction usually occurs " cavity " because departing from original position, cause thermal insulation effect to decline, even lost efficacy.
And, this type of expansion joint of conventional structure, nose balance amount is generally limited in 1/3rd left and right of astragal effective length (being commonly called as out shelves), need to strengthen axial length for realizing large compensation amount.
Summary of the invention
The object of the invention is to: the problem existing for above-mentioned prior art, even if thereby proposing a kind of heat-insulating layer repeatedly absorbs axial displacement and also can keep original distribution to have for a long time the boiler slag removal pipeline non-metal expansion joint of heat insulation effect.
In order to reach above object, boiler slag removal pipeline non-metal expansion joint of the present invention comprises the rectangle upper frame and the underframe that are connected to upper pipeline and lower pipeline; The flow area of described upper frame is less than the flow area of underframe, the average space of described upper frame and underframe border is 1-1.5 times of axial displacement, described upper frame border has lower horizontal Flange, described underframe border has upper horizontal Flange, fixing " returning " font soft ring band between described horizontal Flange and lower horizontal Flange, fixing " returning " font heat-insulating layer in described soft ring band inner side.
The present invention has broken through traditional expansion joint that extends axially with the expansion joint structure of radial extension.In work, because soft ring band keeps " returning " font of plane substantially, and heat-insulating layer fits in astragal inner side all the time, no matter pipeline axial tension still compresses, the heat-insulating layer of inner side all can obviously not compressed because of directly stressed, therefore the drawback that the large compression displacement of effectively having avoided the inner heat-insulating layer of conventional boiler deslagging pipeline non-metal expansion joint to occur cannot reset, guarantees permanently effective operation.And " returning " of the present invention type structure can absorb larger axis to displacement in shorter axial length, structure is very compact.
The present invention further improves, and the flow area of described heat-insulating layer is less than the flow area of upper frame, and the interior border of described heat-insulating layer is fixedly connected on upper frame by suspension rod spaced apart.The outer border of described heat-insulating layer is resisted against the interior border of flow area of underframe.
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 one embodiment of the invention.
Fig. 3 is the plan view of Fig. 2.
Fig. 4 is the partial enlarged drawing of Fig. 2.
Embodiment
Embodiment one
The boiler slag removal pipeline non-metal expansion joint of the present embodiment as shown in Figure 2, comprises the rectangle upper frame 1 and the underframe 2 that are connected to upper pipeline and lower pipeline; The flow area of upper frame 1 is less than the flow area of underframe 2, and both borders are equidistant, 1.2 times of left and right (when 1-1.5 doubly can make axial position, the inclination angle of soft ring band is less than 45 degree, and effect is better) that its spacing is axial displacement.Upper frame 1 border has lower horizontal Flange, underframe 2 borders have upper horizontal Flange, pressing plate 5 by periphery between upper horizontal Flange and lower horizontal Flange is fixed " returning " font soft ring band 3, the cotton heat-insulating layer 4 forming of temperature resistant fiber blanket (conventional aluminum silicate fiber) parcel temperature resistant fiber is fixed in soft ring band 3 inner sides, and heat-insulating layer is also " returning " font.The flow area of heat-insulating layer 4 is less than the flow area of upper frame 1, and interior border is fixedly connected on upper frame 1 by suspension rod spaced apart 6.The upper end of suspension rod 6 is welded on upper frame 1 inside, and the thread section of lower end is by pad and the nut heat-insulating layer 4 of slinging, and this is simple and reliable for structure, easy to assembly.The outer border of heat-insulating layer 4 is resisted against the interior border of flow area of underframe 2.
When work, because astragal and heat-insulating layer are all flexible, can there is relative stretching, compression and to lateral deflection in the boiler slag removal pipeline non-metal expansion joint upper/lower terminal of the present embodiment therefore, the various thermal walkings that produce to absorb coal boiler bottom pipeline." return " shape because flexible member is all plane, therefore, in the time that downward axial displacement occurs upper frame, only make the angle of astragal change, heat-insulating layer is fitted in astragal inside all the time, does not compress.And, in the time of actual arrangement, can be according to the axial displacement direction of work on the spot, oppositely the position of the upper and lower framework of prebias, makes astragal when hot, approach level, thereby more can guarantee the operation reliably and with long-term of product.The present embodiment can be realized large compensation amount with compact structure, effectively absorbs upper and lower axial displacement, and thermal insulation is good, and reliable in structure can keep long-term normal operation.
Claims (6)
1. a boiler slag removal pipeline non-metal expansion joint, comprises the rectangle upper frame and the underframe that are connected to upper pipeline and lower pipeline; It is characterized in that: the flow area of described upper frame is less than the flow area of underframe, the average space of described upper frame and underframe border is 1-1.5 times of axial displacement, described upper frame border has lower horizontal Flange, described underframe border has upper horizontal Flange, fixing " returning " font soft ring band between described horizontal Flange and lower horizontal Flange, fixing " returning " font heat-insulating layer in described soft ring band inner side.
2. boiler slag removal pipeline non-metal expansion joint according to claim 1, is characterized in that: the flow area of described heat-insulating layer is less than the flow area of upper frame, the interior border of described heat-insulating layer is fixedly connected on upper frame by suspension rod spaced apart.
3. boiler slag removal pipeline non-metal expansion joint according to claim 2, is characterized in that: the outer border of described heat-insulating layer is resisted against the interior border of flow area of underframe.
4. boiler slag removal pipeline non-metal expansion joint according to claim 3, is characterized in that: described heat-insulating layer is made up of temperature resistant fiber blanket parcel temperature resistant fiber cotton.
5. boiler slag removal pipeline non-metal expansion joint according to claim 4, is characterized in that: between described horizontal Flange and lower horizontal Flange, fix " returning " font soft ring band by the pressing plate of periphery.
6. boiler slag removal pipeline non-metal expansion joint according to claim 5, is characterized in that: the upper end of described suspension rod is welded on upper frame inside, and the thread section of described suspension rod lower end is by pad and the nut heat-insulating layer of slinging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210527868.8A CN103016889B (en) | 2012-12-10 | 2012-12-10 | Non-metal expansion joint for slag discharge pipeline of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210527868.8A CN103016889B (en) | 2012-12-10 | 2012-12-10 | Non-metal expansion joint for slag discharge pipeline of boiler |
Publications (2)
| Publication Number | Publication Date |
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| CN103016889A CN103016889A (en) | 2013-04-03 |
| CN103016889B true CN103016889B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210527868.8A Active CN103016889B (en) | 2012-12-10 | 2012-12-10 | Non-metal expansion joint for slag discharge pipeline of boiler |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027147A (en) * | 1997-01-03 | 2000-02-22 | Elliott; Stephen | Internal flexible dust seal |
| CN2748745Y (en) * | 2004-11-17 | 2005-12-28 | 彩阳新材料制品（深圳）有限公司 | Antiseptic waterproof non-metal expansion joint |
| CN101093042A (en) * | 2007-06-18 | 2007-12-26 | 彩阳新材料制品（深圳）有限公司 | Expansion joint in use for pipeline in high temperature |
| CN102230560A (en) * | 2011-06-21 | 2011-11-02 | 江苏远通波纹管有限公司 | Slag-dropping pipe expansion joint |
| CN202039075U (en) * | 2011-04-15 | 2011-11-16 | 梁福生 | Bellows compensator |
| CN102434750A (en) * | 2011-12-19 | 2012-05-02 | 南京晨光汉森柔性管有限公司 | Nonmetallic expansion joint for dust-containing medium |
| CN202972344U (en) * | 2012-12-10 | 2013-06-05 | 南京晨光汉森柔性管有限公司 | Boiler slag discharge pipeline non-metal expansion joint |
-
2012
- 2012-12-10 CN CN201210527868.8A patent/CN103016889B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027147A (en) * | 1997-01-03 | 2000-02-22 | Elliott; Stephen | Internal flexible dust seal |
| CN2748745Y (en) * | 2004-11-17 | 2005-12-28 | 彩阳新材料制品（深圳）有限公司 | Antiseptic waterproof non-metal expansion joint |
| CN101093042A (en) * | 2007-06-18 | 2007-12-26 | 彩阳新材料制品（深圳）有限公司 | Expansion joint in use for pipeline in high temperature |
| CN202039075U (en) * | 2011-04-15 | 2011-11-16 | 梁福生 | Bellows compensator |
| CN102230560A (en) * | 2011-06-21 | 2011-11-02 | 江苏远通波纹管有限公司 | Slag-dropping pipe expansion joint |
| CN102434750A (en) * | 2011-12-19 | 2012-05-02 | 南京晨光汉森柔性管有限公司 | Nonmetallic expansion joint for dust-containing medium |
| CN202972344U (en) * | 2012-12-10 | 2013-06-05 | 南京晨光汉森柔性管有限公司 | Boiler slag discharge pipeline non-metal expansion joint |
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| Publication number | Publication date |
|---|---|
| CN103016889A (en) | 2013-04-03 |
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Effective date of registration: 20171030 Address after: 211100 Tianyuan Middle Road, Jiangning economic and Technological Development Zone, Jiangsu, China, No. 188, No. Patentee after: Aerosun Corp. Address before: 211100 Jiangning economic and Technological Development Zone, Jiangsu, general Avenue, No. 199, No. Patentee before: Nanjing Chenguang Hansen Flexible Pipe Co., Ltd. |
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| TR01 | Transfer of patent right |