CN204345157U - A kind of high-temperature expansion joint - Google Patents
A kind of high-temperature expansion joint Download PDFInfo
- Publication number
- CN204345157U CN204345157U CN201420725661.6U CN201420725661U CN204345157U CN 204345157 U CN204345157 U CN 204345157U CN 201420725661 U CN201420725661 U CN 201420725661U CN 204345157 U CN204345157 U CN 204345157U
- Authority
- CN
- China
- Prior art keywords
- corrugated tube
- sleeve pipe
- outward corrugated
- expansion joint
- pressing plate
- 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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Abstract
The utility model relates to a kind of high-temperature expansion joint, comprise an outward corrugated tube, described outward corrugated tube has upper head plate and lower end sheet, the straight tube of a protruding preset length in upper end is provided with in described outward corrugated tube, described straight tube is connected with described upper head plate seal welding, also be provided with a sleeve pipe in described outward corrugated tube, the upper-end surface of described sleeve pipe is provided with a pressing plate, and described pressing plate slides in described sleeve upper end face when described outward corrugated tube occurred level displacement; Described pressing plate has hole, and the lower end of described straight tube is inserted in described sleeve pipe after being stretched out by described hole, and can be elevated in described sleeve pipe when described outward corrugated tube generation vertical displacement; Described lower end sheet seal welding one Taper Pipe, described Taper Pipe communicates with described sleeve pipe; Fire-resistant heat insulating material is filled in the interior sealed space of described outward corrugated tube.The utility model swell increment greatly, not easily deformation failure and high temperature resistant, do not leak ash, there is great production practices meaning.
Description
Technical field
The utility model belongs to high-temperature expansion joint technical field, is specifically related to a kind of high-temperature expansion joint be arranged between circulating fluidized bed boiler slag exhausting mouth and lag cooler.
Background technique
The slag exhausting mouth of circulating fluidized bed boiler, in boiler operatiopn, in furnace shutting down process, owing to there is thermal expansion, therefore its vertical height and horizontal position all can produce larger change, but the slag inlet of the lag cooler be connected with slag exhausting mouth is fixing, so, connect the Residue extraction pipeline between boiler slag removal mouth and lag cooler slag inlet must install can vertical contraction again can the high-temperature expansion joint that offsets of level, to meet boiler expansion demand, because the medium circulated in expansion joint is boiler ash, temperature is very high, 1000 DEG C can be reached, therefore there is some problems all in varying degrees in existing several expansion joint, some expansion joints can tolerate the high temperature of 1000 DEG C, but swell increment requirement cannot be met, some expansion joints can meet swell increment requirement, but cannot tolerate the high temperature of 1000 DEG C, after running a period of time, occur the situations such as distortion, inefficacy, some expansion joints can meet swell increment requirement, also can tolerate the high temperature of 1000 DEG C simultaneously, but cannot ensure himself leakproofness, there is leakage slag in varying degrees, leak grey phenomenon, can not meet the needs that power plant carries out production strictly in line with rules and regulations.
Model utility content
The purpose of this utility model is solve above-mentioned technical problem and provide a kind of high-temperature expansion joint be arranged between circulating fluidized bed boiler slag exhausting mouth and lag cooler, is intended to solve the technical problem that existing current kind is arranged on the problem such as little, the yielding inefficacy of swell increment, non-refractory, leakage ash that the high-temperature expansion joint between circulating fluidized bed boiler slag exhausting mouth and lag cooler exists.
For achieving the above object, the utility model adopts following technological scheme:
A kind of high-temperature expansion joint, comprise an outward corrugated tube, described outward corrugated tube has upper head plate and lower end sheet, the straight tube of a protruding preset length in upper end is provided with in described outward corrugated tube, described straight tube is connected with described upper head plate seal welding, also be provided with a sleeve pipe in described outward corrugated tube, the upper-end surface of described sleeve pipe is provided with a pressing plate, and described pressing plate slides in described sleeve upper end face when described outward corrugated tube occurred level displacement; Described pressing plate has hole, and the lower end of described straight tube is inserted in described sleeve pipe after being stretched out by described hole, and can be elevated in described sleeve pipe when described outward corrugated tube generation vertical displacement; Described lower end sheet seal welding one Taper Pipe, described Taper Pipe communicates with described sleeve pipe; Fire-resistant heat insulating material is filled in the interior sealed space of described outward corrugated tube.
The diameter of described sleeve pipe is greater than the diameter of described straight tube.
The diameter of described sleeve pipe is consistent with the diameter of the flared end of described Taper Pipe.
The lower end surface of described pressing plate is plane structure.
Hole on described pressing plate is circular port, and the diameter of described circular port is a bit larger tham the diameter of described straight tube.
Described fire-resistant heat insulating material is that alumina-silica fire is cotton.
The utility model produces thermal expansion phenomenon in boiler operatiopn, thermal walking is there is in level and Vertical direction in boiler slag removal mouth together with straight tube, outward corrugated tube is compressed on the one hand in vertical direction, produce constant slope in the horizontal direction on the other hand, to absorb horizontal displacement, straight tube also produces level and vertical shift in sleeve pipe, is with dynamic pressure plate to slide on sleeve pipe simultaneously, in order to avoid lime-ash or thin ash overflow from sleeve pipe.
Accompanying drawing explanation
Figure 1 shows that the high-temperature expansion joint outline drawing that the utility model embodiment provides;
Figure 2 shows that the high-temperature expansion joint sectional view that the utility model embodiment provides;
Figure 3 shows that displacement diagram after the installation that the utility model embodiment provides.
Embodiment
Below, in conjunction with example, substantive distinguishing features of the present utility model and advantage are further described, but the utility model is not limited to listed embodiment.
Refer to Fig. 1 ~ 3, a kind of high-temperature expansion joint, comprise an outward corrugated tube 3, described outward corrugated tube has upper head plate 31 and lower end sheet 32, is provided with the straight tube 1 of a protruding preset length in upper end in described outward corrugated tube 3, for connecting boiler roughing slag mouth, described straight tube 1 is welded to connect with the mounting hole peripheral sealing that stretches out of described upper head plate 31, a sleeve pipe 5 is also provided with in described outward corrugated tube, the upper-end surface of described sleeve pipe 5 connects a pressing plate 4, described pressing plate 4 slides (slipping) when described outward corrugated tube occurred level displacement on described sleeve pipe 5 upper-end surface, described pressing plate and sleeve pipe are located in described outward corrugated tube, described pressing plate 4 has hole, the lower end of described straight tube 1 is stretched out by described hole and is inserted in a segment distance in described sleeve pipe 5, described straight tube 1 also can be elevated (vertical shift) when vertical displacement occurs described outward corrugated tube 3 in described sleeve pipe 5, the central authorities of described lower end sheet 32 have the diameter circular hole consistent with the internal diameter of described sleeve pipe 5, the outer side seal of the circular hole on described lower end sheet 32 welds a Taper Pipe 6, described Taper Pipe 6 is communicated with described sleeve pipe 5 by described circular hole, the peripheral sealing of the circular hole on the bottom of described sleeve pipe 5 and described lower end sheet 32 is welded to connect, due to upper head plate 31 and lower end sheet 32 straight tube 1 and Taper Pipe 6, sleeve pipe 5 seal welding respectively of described outward corrugated tube, thus form a seal space be hedged off from the outer world in the inside of described outward corrugated tube, and fill fire-resistant heat insulating material 2 in the interior sealed space of described outward corrugated tube.
Described outward corrugated tube 3 has good plasticity, can stretch in the vertical direction and carry out certain displacement in the horizontal direction, but due to non-refractory, therefore need carry out heat insulation with fire-resistant heat insulating material 2, the wall temperature of outward corrugated tube 3 is reduced, thus makes its plasticity and intensity reach requirement.
Preferably, the diameter of described sleeve pipe is greater than the diameter of described straight tube.
The diameter of described sleeve pipe is consistent with the diameter of the flared end of described Taper Pipe, and described Taper Pipe is welded on the lower end sheet of outward corrugated tube 3, for accepting lime-ash, and is connected with lag cooler slag inlet, and described Taper Pipe 6 can adapt to the needs of different lag cooler slag inlet bore.
Preferably, the lower end surface of described pressing plate 4 is plane structure, is pressed on the upper-end surface of sleeve pipe 5 by this plane structure, prevents lime-ash 7 from emerging from the gap between straight tube 1 and sleeve pipe 5.
Preferably, the hole on described pressing plate 4 is circular port, and the diameter of described circular port is a bit larger tham the diameter of described straight tube.
Preferably, described fire-resistant heat insulating material 2 adopts alumina-silica fire cotton.
During use, the straight tube 1 of this expansion joint is connected with boiler roughing slag mouth, Taper Pipe 6 is connected with lag cooler slag inlet, thermal expansion phenomenon is produced in boiler operatiopn, thermal walking is there is in level and Vertical direction in boiler slag removal mouth together with straight tube 1, as shown in Figure 3, outward corrugated tube 3 one aspect is compressed in vertical direction, produce constant slope in the horizontal direction on the other hand, to absorb horizontal displacement, straight tube 1 also produces level and vertical shift (straight tube 1 is from original mounting point 11 level and vertical shift) in sleeve pipe 5, simultaneously, band dynamic pressure plate 4 slides on sleeve pipe 5, in order to avoid lime-ash or thin ash overflow from sleeve pipe 5.Wherein, X represents that the Horizontal displacement that this expansion joint absorbs, Y represent the vertical displacement that this expansion joint absorbs, and the concrete size of X, Y can adjust according to actual conditions.
The form of the utility model by using outward corrugated tube to add inner sleeve (straight tube), abandon the expansion joint form of traditional single bellows or single sleeve pipe, success solves the problem such as little, the yielding inefficacy of swell increment, non-refractory, leakage ash that current most of high-temperature expansion joint exists, improve the working life of high-temperature expansion joint, and due to the utility model be integral seal structure, make power plant run scene reach requirement of carrying out production strictly in line with rules and regulations.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a high-temperature expansion joint, it is characterized in that, comprise an outward corrugated tube, described outward corrugated tube has upper head plate and lower end sheet, be provided with the straight tube of a protruding preset length in upper end in described outward corrugated tube, described straight tube is connected with described upper head plate seal welding, is also provided with a sleeve pipe in described outward corrugated tube, the upper-end surface of described sleeve pipe is provided with a pressing plate, and described pressing plate slides in described sleeve upper end face when described outward corrugated tube occurred level displacement; Described pressing plate has hole, and the lower end of described straight tube is inserted in described sleeve pipe after being stretched out by described hole, and can be elevated in described sleeve pipe when described outward corrugated tube generation vertical displacement; Described lower end sheet seal welding one Taper Pipe, described Taper Pipe communicates with described sleeve pipe; Fire-resistant heat insulating material is filled in the interior sealed space of described outward corrugated tube.
2. high-temperature expansion joint according to claim 1, it is characterized in that, the diameter of described sleeve pipe is greater than the diameter of described straight tube.
3. high-temperature expansion joint according to claim 2, it is characterized in that, the diameter of described sleeve pipe is consistent with the diameter of the flared end of described Taper Pipe.
4. high-temperature expansion joint according to claim 3, it is characterized in that, the lower end surface of described pressing plate is plane structure.
5. high-temperature expansion joint according to claim 4, it is characterized in that, the hole on described pressing plate is circular port, and the diameter of described circular port is a bit larger tham the diameter of described straight tube.
6. high-temperature expansion joint according to any one of claim 1 ~ 5, is characterized in that, described fire-resistant heat insulating material is that alumina-silica fire is cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725661.6U CN204345157U (en) | 2014-11-28 | 2014-11-28 | A kind of high-temperature expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725661.6U CN204345157U (en) | 2014-11-28 | 2014-11-28 | A kind of high-temperature expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204345157U true CN204345157U (en) | 2015-05-20 |
Family
ID=53228425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725661.6U Expired - Fee Related CN204345157U (en) | 2014-11-28 | 2014-11-28 | A kind of high-temperature expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204345157U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612950A (en) * | 2018-07-11 | 2018-10-02 | 南京晨光东螺波纹管有限公司 | A kind of heatproof load group frame |
| CN109442043A (en) * | 2018-11-06 | 2019-03-08 | 中国寰球工程有限公司 | Industrial furnace high-temperature hearth seal structure |
-
2014
- 2014-11-28 CN CN201420725661.6U patent/CN204345157U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612950A (en) * | 2018-07-11 | 2018-10-02 | 南京晨光东螺波纹管有限公司 | A kind of heatproof load group frame |
| CN108612950B (en) * | 2018-07-11 | 2024-02-13 | 南京晨光东螺波纹管有限公司 | Wen Chengli resistant combined frame |
| CN109442043A (en) * | 2018-11-06 | 2019-03-08 | 中国寰球工程有限公司 | Industrial furnace high-temperature hearth seal structure |
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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: 20150520 Termination date: 20161128 |