CN215112691U - Chimney expansion joint - Google Patents
Chimney expansion joint Download PDFInfo
- Publication number
- CN215112691U CN215112691U CN202121068394.6U CN202121068394U CN215112691U CN 215112691 U CN215112691 U CN 215112691U CN 202121068394 U CN202121068394 U CN 202121068394U CN 215112691 U CN215112691 U CN 215112691U
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- flange
- chimney
- expansion joint
- fixed connection
- board
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Abstract
The utility model relates to a chimney expansion joint, including frame, flange, frame both ends difference fixed connection is on two flanges, and two flange inboards are equipped with and keep off and flow the board, and keep off and flow board one end fixed connection at a flange, and the other end flows board connecting piece and another flange fixed connection through keeping off. Whole chimney expansion joint passes through connecting device to be connected on the upper portion of flue gas entry, and the thermal expansion difference that can compensate the steel inner tube because of the different productions of wall temperature reduces the axial load of inner tube, avoids arousing gas leakage, the weeping that intensity destruction caused for chimney anti-icing engineering both economical and practical, safe and reliable again.
Description
Technical Field
The utility model relates to a chimney expansion joint for trades such as thermal power factory, chemical industry, metallurgy adopt wet flue of wet flue gas desulfurization technology, belong to key environmental protection technical field.
Background
The flue gas temperature at the outlet of the absorption tower in the limestone-gypsum wet flue gas desulfurization system is about 50 ℃, and the flue gas temperature at the inlet of the chimney after desulfurization under the design working condition is generally discharged above 80 ℃ according to the design technical rules of flue gas desulfurization of thermal power plants (DL/T5196-2004) in China. In view of the technical regulations for flue gas desulfurization design of thermal power plants, the flue gas heat exchanger can be omitted when the requirements for environmental protection are met, the chimney and the flue have perfect anti-corrosion and drainage measures and the technology and economy are reasonable, so the flue gas heat exchanger is rarely installed in the later designed chimney. However, in the actual operation process, the chimney without the smoke heat exchanger has relatively high smoke temperature, so the steel inner cylinder has larger heat distortion. If the inner cylinder is connected in a whole rigid manner, thermal extension or temperature stress can be generated, so that the connected parts such as the flange and the like can be greatly deformed for a long time, potential safety hazards can be caused to equipment, and phenomena such as air leakage, liquid leakage and the like can be caused.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: a compensator is arranged on a pipeline under the condition that a steel inner cylinder is heated so as to compensate the thermal elongation of the inner cylinder, and therefore the stress of the cylinder wall and the acting force acting on a flange structure are reduced.
In order to solve the technical problem, the utility model discloses a technical scheme: the utility model provides a chimney expansion joint, includes frame, flange, frame both ends difference fixed connection is on two flanges, and two flange inboards are equipped with and keep off and flow the board, and keep off and flow board one end fixed connection at a flange, and the other end is through keeping off a board connecting piece and another flange fixed connection.
Furthermore, one of the two connecting flanges is a Z-shaped connecting flange, and the other is an L-shaped connecting flange.
Furthermore, reinforcing rib plates are welded between the Z-shaped connecting flange and the chimney inner cylinder, and between the L-shaped connecting flange and the chimney inner cylinder.
Furthermore, an adjusting gasket is arranged between the Z-shaped connecting flange and the frame.
Further, the frame is made of a glass fiber reinforced plastic preform.
Furthermore, the flow baffle connecting piece is a glass fiber reinforced plastic connecting piece.
Further, the flow baffle is a stainless steel plate.
Furthermore, the chimney expansion joint is connected to the upper part of the flue gas inlet through two connecting flanges.
The utility model has the advantages that:
the utility model provides a chimney expansion joint, including satisfying the anticorrosive requirement of wet flue gas, possessing the expansion joint frame of the same rigidity, flange and reinforcement, flange one side is equipped with and keeps off and flows the board, keeps off to flow a board lower extreme and is connected with elastic connection spare. Whole expansion joint passes through connecting device to be connected on the upper portion of flue gas entry, and the thermal expansion difference that can compensate the steel inner tube because of the different productions of wall temperature reduces the axial load of inner tube, avoids arousing gas leakage, the weeping that intensity destruction caused for chimney anti-icing engineering both economical and practical, safe and reliable again.
Drawings
Fig. 1 is a schematic view of an expansion joint of a chimney provided by the present invention;
description of reference numerals: 1-a frame; 2-inner cylinder of chimney; 3-reinforcing rib plate; 4-baffle plate connecting piece; 5/6/7-attachment flange component; 8-adjusting the gasket; 9-a flow baffle; 10-high strength bolts; 11-stainless steel bolts.
Detailed Description
In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with reference to the accompanying drawings:
as shown in fig. 1, the utility model provides a pair of chimney expansion joint, including frame 1, Z type flange (constitute by planking 5, annular slab 6, 7 triplexs of inner panel), L type flange (constitute by planking 5, 6 triplexes of annular slab), flange and the deep floor 3 of inner tube, keep off and flow board connecting piece 4, adjusting shim 8, keep off and flow board 9, high strength bolt 10, stainless steel bolt 11.
The frame 1 of expansion joint is for satisfying wet flue gas anticorrosive requirement, the frame that possesses the same rigidity, 1 one end of frame is through high strength bolt 10 and 8 fixed connection Z type flange of adjusting shim, the other end passes through high strength bolt 10 fixed connection lower part flange, and Z type flange is equipped with L type flange inboard and keeps off and flow board 9, keep off and flow board 9 one end and Z type flange fixed connection, the other end is connected with L type flange and frame 1 through keeping off a class connecting piece 4 and stainless steel bolt 11.
The frame 1 is made of glass fiber reinforced plastic prefabricated parts, and the annular plate 6 and the inner plate 7 of the connecting flange are made of S316L stainless steel. The flow baffle connecting piece 4 is made of glass fiber reinforced plastic, and the flow baffle 9 is made of stainless steel.
Whole expansion joint passes through Z type flange and L type flange connection on the upper portion of flue gas entry, can compensate the steel inner tube because of the thermal expansion difference of the different productions of wall temperature, reduces the axial load of inner tube, avoids causing gas leakage, the weeping that the intensity destruction caused. Reinforcing rib plates 3 are welded between the Z-shaped connecting flange and the chimney inner cylinder 2 and between the L-shaped connecting flange and the chimney inner cylinder 2.
The utility model provides a when the chimney expansion joint used, the spherical section of thick bamboo of glass steel of a take the altitude was installed additional in the shell ring department of expansion joint device above steel chimney inner tube flue gas entry, but the compensation steel inner tube is poor because of the different thermal expansion that produce of wall temperature, reduces the axial load of inner tube, avoids arousing gas leakage, the weeping that intensity destruction caused, can also solve the loss that glass steel reduced because of using for a long time. Because of the advantages of the glass fiber reinforced plastic profile member such as convenient prefabrication, processing and manufacturing, light weight, low cost and the like, the chimney is economical, practical, easy to realize, safe, reliable and convenient to popularize.
Claims (8)
1. The utility model provides a chimney expansion joint, includes frame, flange, its characterized in that: the frame both ends are fixed connection respectively on two flange, and two flange inboards are equipped with and keep off and flow the board, and keep off and flow board one end fixed connection at a flange, and the other end is through keeping off a board connecting piece and another flange fixed connection.
2. The chimney expansion joint according to claim 1, wherein: one of the two connecting flanges is a Z-shaped connecting flange, and the other connecting flange is an L-shaped connecting flange.
3. The chimney expansion joint according to claim 2, wherein: and reinforcing rib plates are welded between the Z-shaped connecting flange and the chimney inner cylinder, and between the L-shaped connecting flange and the chimney inner cylinder.
4. The chimney expansion joint according to claim 2, wherein: and an adjusting gasket is arranged between the Z-shaped connecting flange and the frame.
5. The chimney expansion joint according to claim 1, wherein: the frame is made of glass fiber reinforced plastic prefabricated members.
6. The chimney expansion joint according to claim 1, wherein: the flow baffle connecting piece is a glass fiber reinforced plastic connecting piece.
7. The chimney expansion joint according to claim 1, wherein: the flow baffle is a stainless steel plate.
8. The chimney expansion joint according to any one of claims 1-7, wherein: the chimney expansion joint is connected to the upper part of the flue gas inlet through two connecting flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121068394.6U CN215112691U (en) | 2021-05-18 | 2021-05-18 | Chimney expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121068394.6U CN215112691U (en) | 2021-05-18 | 2021-05-18 | Chimney expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215112691U true CN215112691U (en) | 2021-12-10 |
Family
ID=79297814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121068394.6U Active CN215112691U (en) | 2021-05-18 | 2021-05-18 | Chimney expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215112691U (en) |
-
2021
- 2021-05-18 CN CN202121068394.6U patent/CN215112691U/en active Active
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