CN204164573U - Non-maintaining expansion joint for steel inner cylinder of chimney - Google Patents
Non-maintaining expansion joint for steel inner cylinder of chimney Download PDFInfo
- Publication number
- CN204164573U CN204164573U CN201420591557.2U CN201420591557U CN204164573U CN 204164573 U CN204164573 U CN 204164573U CN 201420591557 U CN201420591557 U CN 201420591557U CN 204164573 U CN204164573 U CN 204164573U
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- China
- Prior art keywords
- inner cylinder
- frame
- steel inner
- expansion joint
- covering
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Abstract
The utility model relates to non-maintaining expansion joint for steel inner cylinder of chimney, comprise steel inner cylinder and nonmetal covering, steel inner cylinder is provided with frame, frame anchor ring is upturned, the annular connecting end of nonmetal covering is connected and fixed by pressing plate, screw bolt and nut and frame, bolt one end is provided with stage clip, and stage clip is located between nut and frame anchor ring.Frame is made up of titanium steel composite board, and steel inner cylinder is connected knuckle internal surface coated titanium plate with frame.Nonmetal covering is made up of fluorine rubber and aramid fibre grid cloth, is formed by overall sulfuration and high pressure compacting.The utility model strengthens intensity and the decay resistance of nonmetal covering greatly, adopts bolt to add the Placement of stage clip between covering and support, covering and support can be kept for a long time to closely cooperate and seal, avoid flue gas to external leakage.Frame anchor ring is upturned, and corrosive liquids can be avoided to be detained in gap.The utility model intensity is high, easy for installation, and working life extends greatly, thus reaches non-maintaining object.
Description
Technical field
The utility model relates to telescopic expansion joint technical field, especially a kind of maintenance-free steel inner core expansion joint for chimney of electric plant.
Background technique
The chimney of power plant is all provided with telescopic expansion joint, and expansion joint is generally divided into again type metal expansion joint and non-metal expansion joint.Normally high temperature sour corrosion flue gas in the chimney of coal-burning power plant, often adopt non-metal expansion joint, the main body of non-metal expansion joint is cover portion, general employing fluorine rubber and glass fiber cloth are composited by glue, it is installed connecting end and adopts steel inner cylinder, and custom is called expansion joint for steel inner cylinder of chimney.
At present, existing expansion joint for steel inner cylinder of chimney has the following disadvantages: 1, adopt horizontally disposed flange circle to be fixedly connected with pressing plate by bolt between steel inner cylinder with nonmetal covering, in using process, the corrosive liquid formed after rainwater mixes with flue gas is trapped in the gap of joint, corroding metal flange, and can shrink and be out of shape after nonmetal covering Long-Time Service, cause producing gap between steel inner cylinder and covering, cause high temperature corrosion flue gas to external leakage.2, non-metal expansion joint is bonded together by glue primarily of fluorine rubber, glass fiber cloth, because the resistance to high temperature of glue is lower, after using a period of time, the Adhesion force of glue declines fast, adds expansion, contraction that expansion joint is prolonged and repeated and bends, can make fluorine rubber, produce cracking between glue and glass fiber cloth, cause expansion joint flexible and bending not freely, internal stress is uneven, and skin-surface also can crack, and affects even the safety of whole chimney.3, in chimney, high-temperature flue gas and sulfur dioxide, nitric acid atomization gas and water vapour enter the inner baking further of covering and corrosion by gap, glass fiber cloth therefore can accelerate aging and produce twist off, cause the working life of nonmetal covering shorter, thus need to safeguard or change expansion joint.For the chimney of electric plant needing long continuous operation, normal production, the cost that not only can affect power plant are higher, and maintenance, replacing and installation are all very inconvenient.
Model utility content
For the deficiency of above existing expansion joint for steel inner cylinder of chimney, the purpose of this utility model is to provide a kind of high temperature resistant, corrosion-resistant, employing fluorine rubber and aramid fibre strengthen the nonmetal expansion joint for steel inner cylinder of chimney that grid cloth is suppressed through overall sulfuration, the intensity of this expansion joint is higher, elasticity and pliability better, working life extends greatly, thus reaches non-maintaining object.
The purpose of this utility model is achieved by the following technical solution:
Non-maintaining expansion joint for steel inner cylinder of chimney, comprise the upper metal inner core connected successively, high temperature resistant nonmetal covering and lower metal inner core, the lower end of described upper metal inner core and the upper end of lower metal inner core are respectively equipped with frame, frame is set to annuli arrangement and is upturned, the two ends up and down of described nonmetal covering are respectively equipped with the annular connecting end outwards stretched, annular connecting end is connected by pressing plate, screw bolt and nut with the frame of described upper and lower metal inner core and fixes, one end of described bolt is also provided with elastic member, and elastic member is located between described nut and the anchor ring of frame.
As optimal technical scheme of the present utility model, the angle between the anchor ring of described upper and lower metal inner core frame and horizontal plane is set to α, 5 °≤α≤25 °.
As optimal technical scheme of the present utility model, described metal inner core is steel inner cylinder, and described frame is made up of titanium steel composite board, and described steel inner cylinder is connected knuckle internal surface with frame is coated with titanium plate.
As optimal technical scheme of the present utility model, described nonmetal covering is made up of at least two-layer fluorine rubber and one deck aramid fibre grid cloth, and aramid fibre grid cloth is located between two-layer fluorine rubber, and is formed by overall sulfuration and high pressure compacting.
As optimal technical scheme of the present utility model, described nonmetal covering is set to the drum like structure that middle evagination two ends are shunk.
As optimal technical scheme of the present utility model, described elastic member is stage clip, and stage clip is located between described nut and the anchor ring of frame.
As optimal technical scheme of the present utility model, described metal inner core is set to cylindrical structural.
The beneficial effects of the utility model are: relative to prior art, the utility model has the following advantages: 1, adopt fluorine adhesive plaster that is acidproof, alkaline-resisting, high-low temperature resistant, with corrosion-resistant, resistant to elevated temperatures high strength aramid fibre grid cloth compound, use specialized mould through the overall sulfuration of high temperature heat conductive oil, formed by high-pressure press compacting again, thus greatly strengthen intensity and the decay resistance of nonmetal covering, greatly extend its working life.
2, adopt bolt to increase the Placement of stage clip between nonmetal covering and steel inner cylinder support, can keep for a long time closely cooperating between nonmetal covering and steel inner cylinder support and sealing, avoid corrosive fume to external leakage, corrode other parts.
3, steel inner cylinder frame anchor ring is upturned, and after rainwater can be avoided to mix with flue gas, the corrosive liquid that formed is trapped in gap, welding when its preferred corner dimension contributes to manufacture and installation.Steel inner cylinder is connected the surface coated titanium plate of knuckle with frame, can strengthen antiseptic effect further, greatly extends its working life.
Acidproof, the resistance to nitre of the utility model, high-low temperature resistant, corrosion-resistant, through the nonmetal covering temperature resistant range of overall sulfuration between-70 DEG C to 280 DEG C, intensity enhancing, elasticity and pliability are better, stretch and bend freely, easy for installation, working life extends greatly, thus reaches non-maintaining object.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the close-up schematic view in the utility model A portion;
Fig. 3 is the close-up schematic view in the utility model B portion.
In figure: 1, nonmetal covering, 2, pressing plate, 3, frame, 4, titanium plate, 5, upper steel inner cylinder, 6, stage clip, 7, pad, 8, bolt, 9, lower steel inner cylinder, 11, fluororubber layer, 12, aramid fiber grid cloth.
Embodiment
As Fig. 1, shown in Fig. 2 and Fig. 3, non-maintaining expansion joint for steel inner cylinder of chimney, comprise the upper steel inner cylinder 5 connected successively, high temperature resistant nonmetal covering 1 and lower steel inner cylinder 9, the lower end of described upper steel inner cylinder 5 and the upper end of lower steel inner cylinder 9 are respectively equipped with frame 3, frame 3 is set to annuli arrangement and is upturned, the two ends up and down of described nonmetal covering 1 are respectively equipped with the annular connecting end outwards stretched, annular connecting end is by pressing plate 2, bolt 8, pad 7 is connected with the frame 3 of nut with described upper and lower steel inner cylinder and fixes, one end of described bolt is also provided with elastic member, elastic member is located between the anchor ring of nut and frame 3.
In the present embodiment, the angle be upturned between the anchor ring of described upper and lower steel inner cylinder frame 3 and horizontal plane is α, welding stand 3 during for the ease of manufacturing, and construction time lifting and installation exercise, α angle is preferably greater than and equals 5 °, is less than or equal to 25 °, and the present embodiment α angle equals 15 °.Described frame 3 is made up of titanium steel composite board, and frame 3 surface is high temperature resistant, corrosion resistant titanium plate, and steel inner cylinder and frame 3 are welded and fixed, and its internal surface connecting knuckle place is coated with titanium plate 4, thus improves the high temperature resistant and decay resistance of whole steel inner cylinder further.
The nonmetal covering of the present embodiment 1 is made up of with high strength aramid fibre grid cloth 12 two-layer above fluororubber layer 11, be provided with aramid fibre between adjacent two-layer fluororubber layer 11 and strengthen grid cloth 12, during manufacture, use specialized mould through the overall sulfuration of high temperature heat conductive oil, formed by high-pressure press compacting again, the nonmetal covering 1 obtained not only has better elasticity and pliability, and greatly strengthens intensity and the decay resistance of nonmetal covering, greatly extends working life.
Nonmetal covering 1 described in the present embodiment is set to the drum like structure that middle evagination two ends are shunk; Described elastic member is stage clip 6, and stage clip 6 is located between the anchor ring of nut, pad and frame 3; Described steel inner cylinder is set to cylindrical structural.Acidproof, the resistance to nitre of the utility model, high-low temperature resistant, corrosion-resistant, through the nonmetal covering of overall sulfuration, intensity is higher, elasticity and pliability better, flexible and bending freely, easy for installation, working life extends greatly, thus reaches non-maintaining object.
Claims (7)
1. a non-maintaining expansion joint for steel inner cylinder of chimney, comprise the upper metal inner core connected successively, high temperature resistant nonmetal covering and lower metal inner core, it is characterized in that: the lower end of described upper metal inner core and the upper end of lower metal inner core are respectively equipped with frame, frame is set to annuli arrangement and is upturned, the two ends up and down of described nonmetal covering are respectively equipped with the annular connecting end outwards stretched, annular connecting end passes through pressing plate, screw bolt and nut is connected with the frame of described upper and lower metal inner core and fixes, one end of described bolt is also provided with elastic member, elastic member is located between described nut and the anchor ring of frame.
2. non-maintaining expansion joint for steel inner cylinder of chimney according to claim 1, is characterized in that: the angle between the anchor ring of described upper and lower metal inner core frame and horizontal plane is set to α, 5 °≤α≤25 °.
3. non-maintaining expansion joint for steel inner cylinder of chimney according to claim 1, is characterized in that: described metal inner core is steel inner cylinder, and described frame is made up of titanium steel composite board, and described steel inner cylinder is connected knuckle internal surface with frame is coated with titanium plate.
4. the non-maintaining expansion joint for steel inner cylinder of chimney according to any one of claims 1 to 3, it is characterized in that: described nonmetal covering is made up of at least two-layer fluorine rubber and one deck aramid fibre grid cloth, aramid fibre grid cloth is located between two-layer fluorine rubber, and is formed by overall sulfuration and high pressure compacting.
5. non-maintaining expansion joint for steel inner cylinder of chimney according to claim 4, is characterized in that: described nonmetal covering is set to the drum like structure that middle evagination two ends are shunk.
6. non-maintaining expansion joint for steel inner cylinder of chimney according to claim 1, it is characterized in that: described elastic member is stage clip, stage clip is located between described nut and the anchor ring of frame.
7. non-maintaining expansion joint for steel inner cylinder of chimney according to claim 1, is characterized in that: described metal inner core is set to cylindrical structural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591557.2U CN204164573U (en) | 2014-10-13 | 2014-10-13 | Non-maintaining expansion joint for steel inner cylinder of chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591557.2U CN204164573U (en) | 2014-10-13 | 2014-10-13 | Non-maintaining expansion joint for steel inner cylinder of chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164573U true CN204164573U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420591557.2U Expired - Fee Related CN204164573U (en) | 2014-10-13 | 2014-10-13 | Non-maintaining expansion joint for steel inner cylinder of chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570593A (en) * | 2014-10-13 | 2016-05-11 | 江苏彩阳环保科技有限公司 | Maintenance-free steel inner cylinder expansion joint for chimney |
| CN110011149A (en) * | 2019-04-30 | 2019-07-12 | 扬州海通电子科技有限公司 | A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys |
-
2014
- 2014-10-13 CN CN201420591557.2U patent/CN204164573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570593A (en) * | 2014-10-13 | 2016-05-11 | 江苏彩阳环保科技有限公司 | Maintenance-free steel inner cylinder expansion joint for chimney |
| CN110011149A (en) * | 2019-04-30 | 2019-07-12 | 扬州海通电子科技有限公司 | A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20161013 |