CN216205374U - Flue and boiler - Google Patents
Flue and boiler Download PDFInfo
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- CN216205374U CN216205374U CN202122357480.5U CN202122357480U CN216205374U CN 216205374 U CN216205374 U CN 216205374U CN 202122357480 U CN202122357480 U CN 202122357480U CN 216205374 U CN216205374 U CN 216205374U
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Abstract
The utility model discloses a flue, which comprises a furnace mouth section flue, wherein the furnace mouth section flue comprises a moving section flue, a fixed section flue, a moving device, a lifting support device and a fixed connection device; the lifting support device is used for supporting a fixed section flue in the height direction, fixing the fixed section flue at a height position enabling the fixed section flue to be communicated with the moving section flue through the fixed connection device, and driving the fixed section flue to descend through the descending of the lifting support device in the height direction after the fixed connection device is disconnected from the fixed section flue so as to disconnect the communication connection with the moving section flue; the moving end flue is connected with the moving device and drives the moving end flue to move through the moving device. The utility model also discloses a boiler with the flue, and the utility model can realize local replacement or integral replacement of the flue.
Description
Technical Field
The utility model relates to the technical field of flues, in particular to a flue and a boiler.
Background
The converter vaporization flue is a device for recovering sensible heat of generated high-temperature flue gas in the converter steelmaking process, reducing the temperature of the flue gas to a certain temperature and then sending the flue gas into a subsequent dedusting system. Because a large amount of high-temperature flue gas is generated in the blowing process of the converter, the flue gas temperature is usually as high as 2000 ℃, the reaction in the converter is violent, and the risk of slag splashing exists, and the flue at the converter mouth section is a part which is closest to the converter except for the skirt cover, so that the flue at the converter mouth section is more easily influenced by the converter, the service life of the flue at the converter mouth section is shortened, and the flue at the converter mouth section needs to be replaced by one to two years. The bottom of the flue at the furnace mouth section is the position closest to the furnace mouth of the converter, so that the conditions of water leakage, damage and the like are more likely to occur, and repair welding operation or replacement needs to be carried out at regular time; but because of the fire door section space is narrow and small, it is all comparatively inconvenient to only maintain or change fire door section flue bottom, among the prior art, adopts the mode of whole change of whole fire door section flue usually, but this mode is comparatively time-consuming and energy-consuming, and can't be changed according to the damaged or condition segmentation of leaking of flue, and the replacement cost is higher.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a flue and a boiler, which realize local replacement and integral replacement of the flue.
The utility model adopts the following technical scheme:
a flue comprises a furnace mouth section flue, wherein the furnace mouth section flue comprises a moving section flue, a fixed section flue, a moving device, a lifting support device and a fixed connection device; defining that one side of the fixed section flue facing the ground is a bottom side and the other side far away from the bottom side is a top side in the height direction after the fixed section flue is fixed, and the front side and the rear side which are positioned on a vertical surface and are mutually vertical to the top side and the bottom side are the front side and the rear side; the lifting support device is used for supporting the fixed section flue in the height direction, fixing the fixed section flue at a height position enabling the fixed section flue to be communicated and connected with the moving section flue through the fixed connection device, and driving the fixed section flue to descend through descending of the lifting support device in the height direction after connection between the fixed connection device and the fixed section flue is released so as to disconnect the communication and connection with the moving section flue; the moving section flue is connected with the moving device and drives the moving section flue to move through the moving device.
Wherein, for the intercommunication of convenient removal section flue and fixed segment flue to be connected, remove the section flue with the fixed segment flue is through detachable grafting cooperation intercommunication connection.
Wherein, for the sealed effect of the coupling part of guaranteeing removal section flue and canned paragraph flue, remove the section flue with the canned paragraph flue passes through sealing connection device and connects, sealing connection device is including sealed picture peg, seal groove, sealed picture peg is located the bottom side of removal section flue, the seal groove is located the top side of canned paragraph flue, through sealed picture peg inserts in the seal groove so that remove the section flue with the canned paragraph flue is connected, through the drive the seal groove moves down and makes sealed picture peg is followed break away from, the disconnection in the seal groove remove the section flue with the intercommunication of canned paragraph flue is connected.
The movable section flue and the fixed section flue are communicated and connected through the guide limiting device, and the sealing plugboard is limited in the sealing groove.
Wherein, for making the fixed segment flue fixed stay in the high position that makes it be connected with the removal section flue intercommunication, the fixed segment flue is equipped with first fixed bolster, lift strutting arrangement includes jack and support frame, first fixed bolster with support frame fixed connection, the jack is located in order to support in the direction of height in the support frame the fixed segment flue.
The fixed connecting device is a pin, and when the fixed section flue is positioned at a height position communicated and connected with the moving section flue, the pin fixes the first fixed support and the support frame to fix the fixed section flue; and pulling out the pin, and descending the jack to drive the fixed section flue to descend in the height direction.
Wherein, for the sealed effect of guaranteeing the fixed segment flue bottom side, still include movable petticoat pipe, the activity petticoat pipe is located liftable the fixed segment flue bottom side, the activity petticoat pipe rises in order to let the decline of fixed segment flue in the direction of height, the decline of activity petticoat pipe is in order to make the bottom side of fixed segment flue keeps sealed state.
In order to drive the moving section flue to move, two ends of the bottom side of the moving section flue are connected with the moving device through the second fixing support, and the moving device is supported on the table top and moves on the table top.
Wherein, for guaranteeing the supporting effect of mobile device to the removal section flue, the removal section flue is equipped with the bending zone, the removal section flue is located the position correspondence of bending zone opening orientation is equipped with the third fixed bolster, the other end of third fixed bolster with the mobile device is connected.
The movable device comprises a driving motor, a frame and wheels, wherein the frame is provided with a fixed seat for placing the movable section flue, and a mounting seat connected with the second fixed support and the third fixed support, the wheels are connected below the frame, and the frame is driven by the driving motor to drive the movable section flue to move.
The movable section flue comprises a furnace mouth section flue, a main flue, a compensator and a compensator, wherein the main flue is communicated and connected with the furnace mouth section flue, the bottom side of the main flue is connected with the top side of the movable section flue through the compensator, and the movable section flue is disconnected with the main flue by disconnecting the compensator.
Based on the flue, the utility model further provides a boiler which comprises a boiler and any one of the flues, wherein the flue is arranged at the top of the boiler.
Wherein, further, the boiler is a converter exhaust-heat boiler.
After the scheme is adopted, the utility model has the following beneficial effects: the fixed section flue is supported in the height direction through the lifting support device, the fixed section flue is fixed at the height position which enables the fixed section flue to be communicated and connected with the moving section flue through the fixed connection device, and after the fixed connection device is disconnected with the fixed section flue, the fixed section flue is driven to descend through the descending of the lifting support device in the height direction so as to disconnect the communication and connection with the moving section flue; then, the moving device drives the moving section flue to move, so that the old moving section flue is moved, a new moving section flue is conveniently installed, and the local replacement of the flue is realized; the utility model can complete local replacement of the flue, can also facilitate the overall replacement of the flue, and has simple structure and convenient operation.
The utility model is described in further detail below with reference to the figures and the specific embodiments.
Drawings
FIG. 1 is a first schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a second schematic structural view at another angle in embodiment 1 of the present invention;
FIG. 3 is a top view of embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of a sealing joint apparatus according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of the elevation supporting apparatus of embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a traverse carriage according to embodiment 1 of the present invention.
Detailed Description
To further illustrate the various embodiments, the utility model provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
Meanwhile, the directions of front, rear, left, right, and the like referred to in the present embodiment are only used as a reference for one direction, and do not represent directions in actual use.
The utility model will now be further described with reference to the accompanying drawings and detailed description.
Example 1:
referring to fig. 1 to 6, as a preferred embodiment of the present invention, there is provided a flue comprising a tuyere section flue and a main flue 3, the tuyere section flue being sectioned on a vertical section into a tuyere fixed section flue 1 and a tuyere moving section flue 2. During steel making, a large amount of waste gas and smoke dust overflow from a converter mouth, the waste gas and the smoke dust are firstly collected by the movable smoke hood 5 and then enter the dust removal system and the recovery system through the flue above the movable smoke hood 5. In this embodiment, the direction of the fixed section flue 1 in the fixed use state is taken as a description direction, that is, one side facing the ground is taken as a bottom side, the other side far away from the bottom side is taken as a top side, and the front side and the rear side which are positioned on a vertical surface and are perpendicular to the top side and the bottom side are taken as a front side and a rear side.
The fixed section flue 1 and the moving section flue 2 are connected in a matched and communicated mode through detachable splicing, specifically, the top side of the fixed section flue 1 is connected with the moving section flue 2 through a sealing connection device 4, first upper headers 11 are arranged at two ends of the top side of the fixed section flue 1, and first lower headers 12 are arranged at two ends of the bottom side of the fixed section flue 1; the two ends of the top side of the moving section flue 2 are provided with second upper headers 21, and the two ends of the bottom side of the moving section flue 2 are provided with second lower headers 22; the sealing connection device 4 comprises a sealing insertion plate 41 and a sealing groove 42, the sealing insertion plate 41 is arranged on the second lower header 22 at the bottom side of the moving section flue 2, the sealing groove 42 is arranged on the first upper header 11 at the top side of the fixed section flue 1, and the sealing insertion plate 41 is inserted into the sealing groove 42 to enable the moving section flue 2 to be communicated and connected with the fixed section flue 1; the sealing medium in the sealing groove 42 is sand or water to absorb the downward thermal expansion displacement of the moving section flue 2 and the upward thermal expansion displacement of the fixed section flue 1. The sealing connection device 4 is further provided with a guiding and limiting device 43, and when the moving section flue 2 is communicated and connected with the fixed section flue 1 through the guiding of the guiding and limiting device 43, the sealing inserting plate 41 is limited in the sealing groove 42. The guiding and limiting device 43 has a plug groove and a plug plate, the plug groove and the plug plate are arranged on the same side, the plug groove is arranged on one side of the second lower header 22, the plug plate is arranged on one side of the first upper header 11, and the plug plate is inserted into the plug groove in an alignment manner to realize the guiding and limiting of the sealing connecting device 4. When the moving section flue 2 needs to be replaced, the sealing insertion plate 41 is separated from the sealing groove 42 by driving the sealing groove 42 to move downwards, and the moving section flue 2 is disconnected from the fixed section flue 1.
The fixed section flue 1 is also provided with a lifting connecting device 10 and a fixed connecting device 30, the lifting connecting device 10 supports the fixed section flue 1 in the height direction, the fixed section flue 1 is fixed at the height position where the fixed section flue 1 is connected with the moving section flue 2 by the fixed connecting device 30, and after the fixed connecting device 30 is disconnected from the fixed section flue 1, the fixed section flue 1 is driven to descend through the descending of the lifting connecting device 10 in the height direction so as to disconnect the connection with the moving section flue 2. Specifically, the front side and the rear side of the fixed section flue 1 are fixedly provided with first fixed supports 13, the number of the lifting support devices 10 and the fixed connection devices 30 is two, the lifting support devices 10 and the fixed connection devices are respectively arranged on the front side and the rear side of the fixed section flue 1, the lifting support devices 10 are arranged on a platform beam, the position of the platform beam is the height position of the communicated connection between the fixed section flue 1 and the moving section flue 2, each lifting support device 10 comprises a support frame 101 and a jack 102, the first fixed supports 13 are fixedly connected with the support frame 101, and the jack 102 is arranged in the support frame 101 to support the fixed section flue 1 in the height direction; the fixed connection device 30 is a pin, when the fixed section flue 1 is located at a height position communicated and connected with the moving section flue 2, the pin fixes the first fixed support 13 and the support frame 101 on the platform beam to fix the fixed section flue 1, the pin is pulled out, and the jack 102 is lowered, i.e. the fixed section flue 1 can be driven to descend in the height direction. When the moving section flue 2 needs to be replaced, the jack 102 is lifted slightly to transfer the pressure of the fixed section flue 1 to the jack 102, the pin can be pulled out easily at the moment, the fixed connection between the support frame 101 and the platform beam is removed, at the moment, the first fixing support 13 is still supported on the support frame 101, the jack 102 is lowered, the fixed section flue 1 can be lowered by a certain height under the driving of the jack 102, a channel for the moving section flue 2 to move is made, and the moving section flue 2 is convenient to replace. In other embodiments, the elevation support means 10 and the fixed connection means 30 may adopt different structures, which is not limited herein.
The bottom side of the fixed section flue 1 is connected with the movable smoke hood 5, the movable smoke hood 5 is arranged at the bottom side of the fixed section flue 1 in a lifting mode, the movable smoke hood 5 rises to enable the fixed section flue to descend in the height direction, and the movable smoke hood 5 descends to enable the bottom side of the fixed section flue and a converter mouth to be kept in a sealing state. The movable smoke hood 5 comprises a smoke hood body, a plurality of annular heat absorption pipes are arranged on the smoke hood body, an annular air seal header is arranged at the top of the smoke hood body, a plurality of air injection pipes used for injecting steam or nitrogen are arranged at intervals in the circumferential direction of the air seal header, one end of each air injection pipe is communicated with the air seal header, the other end of each air injection pipe is deep into the top of the smoke hood body, a plurality of hanging frames are arranged on the outer side of the smoke hood body, guide wheels are arranged at the upper ends of the hanging frames, and the smoke hood body can be driven to ascend and descend on the lifting track through the guide wheels. When the converter normally works, the movable smoke hood 5 descends and is covered between the converter waste heat boiler and the fixed section flue 1, and the air quantity entering from the gap of the smoke hood body between the converter mouth and the flue is reduced by injecting steam or nitrogen, and meanwhile, smoke is prevented from leaking from the gap; when the fixed section flue 1 needs to descend, the movable smoke hood 5 is lifted to give way to the fixed section flue 1. In other embodiments, the movable hood 5 may have other structures, and is not limited herein.
The moving section flue 2 is connected with the moving device 20, and the moving section flue 2 is driven to move by the moving device 20. Specifically, the second fixing supports 23 are fixedly arranged at two ends of the bottom side of the moving section flue 2, the other ends of the second fixing supports 23 are connected with the moving device 20, and the moving device 20 is supported on the table top and moves on the table top. In this embodiment, the moving section flue 2 is further provided with a bending area, in order to enable the moving device 20 to stably support the moving section flue 2, a third fixing support 24 is further correspondingly arranged at a position of the moving section flue 2 located at the opening of the bending area, and the other end of the third fixing support 24 is fixedly connected with the moving device 20. The moving device 20 includes a driving motor 201, wheels, and a carriage. Be equipped with the fixing base 202 of removal section flue 2 on the frame, and the mount pad 203 of being connected with second fixed bolster 23 and third fixed bolster 24, the wheel is connected to the frame below, drive the frame through driving motor and drive removal section flue 2 back-and-forth movement on the mesa, in order to remove old removal section flue 2, give the new removal section flue 2 of treating the change and let the position, move new removal section flue 2 to the top of fixed segment flue 1, realize only the change to removal section flue 2, and need not to change whole flue. In other embodiments, the mobile device 20 may have other configurations, and is not limited herein.
The two ends of the top side of the moving section flue 2 are connected with the two ends of the bottom side of the main flue 3 through the compensator 6, specifically, the two ends of the top side of the flue 3 are provided with third upper headers, and the two ends of the bottom side of the main flue 3 are provided with third lower headers 31; the compensator 6 comprises a compensator outer sleeve and an annular inner baffle, the compensator outer sleeve is fixedly arranged on a third lower header 31 at the bottom side of the main flue 3 through bolts, the annular inner baffle is fixedly arranged on a second upper header 21 at the top side of the moving section flue 2 through bolts, and the outer edge of the annular inner baffle abuts against the compensator outer sleeve so as to connect the moving section flue 2 with the main flue 3; when the moving section flue 2 and the main flue 3 expand or contract due to temperature change, the outer edge of the annular inner baffle plate slides along the inner wall of the compensator outer sleeve, so that the total length of the flue is kept unchanged, and the internal stress of the flue is eliminated.
The replacement process of the flue aiming at the moving section flue 2 is as follows:
the connecting bolt of the compensator outer sleeve 61 and the main flue 3 and the connecting bolt of the annular inner baffle plate 62 and the moving section flue 2 are screwed out manually by people, so that the connection between the top side of the moving section flue 2 and the bottom side of the main flue 3 is disconnected, and the subsequent moving section flue 2 can move back and forth conveniently.
Lifting the jack 102 slightly to transfer the pressure of the fixed section flue 1 to the jack 102, then easily pulling out the pin, and removing the fixed connection between the support frame 101 and the platform beam, at the moment, the first fixed support 13 is still supported on the support frame 101, lowering the jack 102, and the fixed section flue 1 can be lowered to a certain height under the driving of the jack 102; the descending of the fixed section flue 1 disconnects the sealing connection device 4 between the moving section flue 2 and the fixed section flue 1, namely, the sealing groove 42 descends, so that the sealing inserting plate 41 is separated from the sealing groove 42, and the connection between the fixed section flue 1 and the moving section flue 2 is disconnected; and finally, moving the moving device 20 to enable the moving section flue 2 to leave from the upper part of the fixed section flue 1, moving the new moving section flue 2 to the upper part of the fixed section flue 1, screwing the compensator 6 between the top side of the new moving section flue 2 and the bottom side of the main flue 3, realizing the connection between the top side of the new moving section flue 2 and the bottom side of the main flue 3, driving the lifting support device 10 to ascend, enabling the new moving section flue 2 to be connected with the sealing connection device 4 between the fixed section flue 1, enabling the bottom side of the new moving section flue 2 to be connected with the top side of the fixed section flue 1, and realizing the replacement of the moving section 2. The utility model can not only realize the whole replacement of the whole flue, but also carry out local replacement aiming at the moving section flue 2 which is easy to leak or damage, thereby saving time and labor and reducing the replacement cost.
Example 2:
the embodiment provides a boiler, preferably a converter waste heat boiler, comprising a boiler and a flue, wherein the flue is the flue provided in embodiment 1, and the flue is arranged at the top of the boiler.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (13)
1. The utility model provides a flue, includes fire door section flue, its characterized in that: the furnace mouth section flue comprises a moving section flue, a fixed section flue, a moving device, a lifting support device and a fixed connection device, wherein the moving section flue is communicated with the fixed section flue; defining that one side of the fixed section flue facing the ground is a bottom side and the other side far away from the bottom side is a top side in the height direction after the fixed section flue is fixed, and the front side and the rear side which are positioned on a vertical surface and are mutually vertical to the top side and the bottom side are the front side and the rear side; the lifting support device is used for supporting the fixed section flue in the height direction, fixing the fixed section flue at a height position enabling the fixed section flue to be communicated and connected with the moving section flue through the fixed connection device, and driving the fixed section flue to descend through descending of the lifting support device in the height direction after connection between the fixed connection device and the fixed section flue is released so as to disconnect the communication and connection with the moving section flue; the moving section flue is connected with the moving device and drives the moving section flue to move through the moving device.
2. A flue according to claim 1 wherein: the movable section flue and the fixed section flue are connected in a matched, communicated and communicated mode through detachable splicing.
3. A flue according to claim 2 wherein: the movable section flue with the canned paragraph flue passes through sealing connection device to be connected, sealing connection device is including sealed picture peg, seal groove, sealed picture peg is located the bottom side of movable section flue, the seal groove is located the top side of canned paragraph flue, through sealed picture peg inserts in the seal groove so that the movable section flue with the canned paragraph flue is connected, through the drive the seal groove moves down and makes sealed picture peg is followed break away from in the seal groove, the disconnection the movable section flue with the intercommunication of canned paragraph flue is connected.
4. A flue according to claim 3 wherein: the sealing insertion plate is limited in the sealing groove when the movable section flue and the fixed section flue are communicated and connected through the guiding of the guiding limiting device.
5. A flue according to claim 1 wherein: the fixed section flue is provided with a first fixed support, the lifting support device comprises a jack and a support frame, the first fixed support is fixedly connected with the support frame, and the jack is arranged in the support frame to support the fixed section flue in the height direction.
6. The flue of claim 5 wherein: the fixed connecting device is a pin, and when the fixed section flue is positioned at a height position communicated and connected with the moving section flue, the pin fixes the first fixed support and the support frame so as to fix the fixed section flue; and pulling out the pin, and descending the jack to drive the fixed section flue to descend in the height direction.
7. A flue according to claim 1 wherein: still include movable petticoat pipe, the liftable ground of movable petticoat pipe is located the fixed segment flue bottom side, the movable petticoat pipe rises in order to let the decline of fixed segment flue in the direction of height, the movable petticoat pipe descends so that the bottom side of fixed segment flue keeps sealed state.
8. A flue according to claim 1 wherein: and two ends of the bottom side of the moving section flue are connected with the moving device through a second fixed support, and the moving device is supported on the table top and moves on the table top.
9. A flue according to claim 8 wherein: the moving section flue is provided with a bending area, a third fixing support is correspondingly arranged at the position, facing the opening of the bending area, of the moving section flue, and the other end of the third fixing support is connected with the moving device.
10. A flue according to claim 9 wherein: the moving device comprises a driving motor, a frame and wheels, wherein the frame is provided with a fixed seat for placing the moving section flue, and a mounting seat connected with the second fixed support and the third fixed support, the wheels are connected below the frame, and the frame is driven by the driving motor to drive the moving section flue to move.
11. A flue according to claim 1 wherein: the movable section flue is communicated with the furnace mouth section flue, the bottom side of the main flue is connected with the top side of the movable section flue through a compensator, and the movable section flue is disconnected with the main flue by disconnecting the compensator.
12. A boiler, characterized by: comprising a boiler and a flue according to any one of claims 1-11, said flue being provided at the top of said boiler.
13. The boiler according to claim 12, wherein: the boiler is a converter waste heat boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122357480.5U CN216205374U (en) | 2021-09-28 | 2021-09-28 | Flue and boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122357480.5U CN216205374U (en) | 2021-09-28 | 2021-09-28 | Flue and boiler |
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| CN216205374U true CN216205374U (en) | 2022-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819769A (en) * | 2021-09-28 | 2021-12-21 | 中冶南方工程技术有限公司 | Flue and boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819769A (en) * | 2021-09-28 | 2021-12-21 | 中冶南方工程技术有限公司 | Flue and boiler |
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