CN220337801U - Compensator for blast furnace air supply device - Google Patents
Compensator for blast furnace air supply device Download PDFInfo
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- CN220337801U CN220337801U CN202321502512.9U CN202321502512U CN220337801U CN 220337801 U CN220337801 U CN 220337801U CN 202321502512 U CN202321502512 U CN 202321502512U CN 220337801 U CN220337801 U CN 220337801U
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- corrugated pipe
- compensator
- blast furnace
- refractory lining
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- 238000013016 damping Methods 0.000 claims description 9
- 239000012774 insulation material Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model discloses a compensator for a blast furnace air supply device, which relates to the field of pipeline auxiliary devices and solves the problems that in the prior art, an annular arc through groove is formed in the middle of a refractory pouring material, so that part of heat overflows through the arc through groove and is transferred to a corrugated pipe to raise the temperature of the corrugated pipe, and the service life of the corrugated pipe is influenced; according to the utility model, the labyrinth seal is formed by the first channel, the second channel, the third channel and the fourth channel, so that the air flow rate is gradually reduced, the high-temperature air quantity overflowing from the refractory lining is reduced, the influence of the high-temperature air on the corrugated pipe is reduced, and meanwhile, the first channel, the fourth channel, the second channel and the third channel are respectively arranged along the axial direction, the radial direction and the angular direction, so that the movable allowance in multiple directions of the axial direction, the radial direction and the angular direction can be generated when the lower refractory lining and the upper refractory lining are displaced.
Description
Technical Field
The utility model relates to the field of pipeline auxiliary devices, in particular to a compensator for an air supply device of a blast furnace.
Background
The ripple compensator belongs to a compensating element. The effective expansion and contraction deformation of the corrugated pipe of the working main body is utilized to absorb the dimensional changes of pipelines, ducts, containers and the like caused by expansion caused by heat and contraction caused by cold or compensate the axial, transverse and angular displacement of the pipelines, ducts, containers and the like, and the corrugated pipe can also be used for noise reduction and vibration reduction and has wide application in modern industry.
The blast furnace air inlet device is equipment for conveying hot air of approximately 1300 ℃ in a hot air surrounding pipe into a blast furnace through an air port small sleeve, a corrugated compensator is needed in the installation process of the blast furnace air inlet device to absorb the dimensional change of the air inlet device caused by expansion and contraction, deformation of the blast furnace and the like, and the lining made of refractory materials is installed in the corrugated compensator used in the blast furnace air inlet device because the using temperature of the blast furnace air inlet device is higher, and in order to avoid the damage of the lining in the blast furnace air inlet device when the compensator is deformed, the lining can be set into a split type, a movable gap exists between the two parts of the lining, and movable allowance is provided for the compensator when the compensator is deformed, so that the damage of the lining made of the refractory materials is avoided.
In the patent application with the application number of CN202221429380.7, a compensator is disclosed, which comprises a compensator main body and flanges arranged at the upper end and the lower end of the compensator main body; the compensator main body comprises a corrugated pipe positioned at the outer layer of the side part, refractory casting material positioned at the inner layer of the side part and a passage port positioned at the middle part; the refractory casting material is provided with annular arc through grooves, and openings of the arc through grooves are respectively pointed to the channel opening and the inner wall of the corrugated pipe. The middle part of the arc through groove adopts a semicircular arc shape, so that the collision between the upper refractory pouring material and the lower refractory pouring material can be protected to the greatest extent, the refractory pouring material is prevented from generating cracks and fractures, and the service life of the compensator is prolonged.
Above-mentioned patent sets up annular arc through groove at refractory pouring material middle part to arc through groove middle part adopts semicircle to describe, collision between the refractory pouring material about can the at utmost protection, prevents that refractory pouring material from producing the crack and breaking, improves the life of compensator, and still packs flexible insulating material between refractory pouring material and bellows inner wall, improves thermal-insulated effect, prevents that heat from transmitting to the bellows on, reduces the temperature of bellows and improves life-span.
However, due to the fact that the sealing performance of the semicircular arc through grooves is insufficient, heat in the inner cavity of the refractory lining is easy to overflow through the arc through grooves and is transferred to the corrugated pipe, the temperature of the corrugated pipe is increased, and the service life of the corrugated pipe is affected.
Disclosure of Invention
The utility model aims at: the compensator is used for solving the problems that in the prior art, the sealing performance of an annular arc through groove formed in the middle of a refractory casting material is insufficient, part of heat overflows through the arc through groove and is transferred to a corrugated pipe, so that the temperature of the corrugated pipe is increased, and the service life of the corrugated pipe is influenced.
The technical scheme adopted by the utility model is as follows: the utility model provides a compensator for blast furnace air supply arrangement, includes the bellows, both ends all are provided with the ring flange about the bellows, and the bellows inboard is provided with refractory lining, the refractory lining includes upper refractory lining and the lower refractory lining that top-down coaxial setting in proper order, upper refractory lining with form annular channel between the lower refractory lining, annular channel is used for providing activity allowance for the displacement of upper refractory lining and lower refractory lining when the compensator warp.
The annular channel comprises a first channel, a second channel, a third channel and a fourth channel which are sequentially communicated.
The first channel is arranged along the radial direction, one end of the first channel is communicated with the inner cavity of the refractory lining, the other end of the first channel is communicated with the second channel arranged along the axial direction, the fourth channel is also arranged along the radial direction, one end of the fourth channel is communicated with the inner cavity of the corrugated pipe, and the other end of the fourth channel is communicated with the second channel through the third channel which is obliquely arranged upwards.
The areas of the first channel and the third channel are the same, the areas of the second channel and the fourth channel are the same, and the areas of the first channel and the third channel are smaller than those of the second channel and the fourth channel.
Further, a high-temperature-resistant damping ring is arranged on the inner wall of the lower side of the third channel, and the high-temperature-resistant damping ring is made of silicon carbide with high fracture toughness and thermal shock resistance.
Further, a flexible heat insulation material is filled between the fireproof lining and the corrugated pipe, and the flexible heat insulation material comprises heat-resistant cotton.
Furthermore, the outer sides of the flange plates are respectively provided with an ear plate, and the ear plates are connected through a bolt compensation pull rod.
In conclusion, by adopting the technical scheme, the utility model has the beneficial effects that:
1. according to the utility model, labyrinth sealing is formed through the first channel, the second channel, the third channel and the fourth channel, and the air flow rate is gradually reduced, so that the high-temperature air quantity overflowing from the refractory lining is reduced, the influence of the high-temperature air on the corrugated pipe is reduced, and meanwhile, the first channel, the fourth channel, the second channel and the third channel are respectively arranged along the axial direction, the radial direction and the angular direction, so that the movable allowance in multiple directions of the axial direction, the radial direction and the angular direction can be generated when the lower refractory lining and the upper refractory lining are displaced;
2. the high-temperature-resistant damping ring is arranged on the inner wall of the lower side of the third channel, and is made of silicon carbide with high temperature resistance, excellent fracture toughness and thermal shock resistance, so that the high-temperature-resistant damping ring is used for absorbing impact force generated when the lower refractory lining and the upper refractory lining are displaced, and has a protective effect on the lower refractory lining and the upper refractory lining;
3. in the utility model, a flexible heat insulation material is filled between the fireproof lining and the corrugated pipe, and the flexible heat insulation material comprises heat-resistant cotton. The heat-resistant cotton is flexible and elastic, and basically does not influence the capacity of the compensator for absorbing the thermal deformation of the pipeline in the axial direction, the transverse direction and the angular direction, so that the heat insulation effect is improved, the temperature of the corrugated pipe is further reduced, and the service life of the corrugated pipe is prolonged.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a partial enlarged view at a in fig. 1.
Reference numerals illustrate:
1. a flange plate; 2. a screw hole; 3. ear plates; 4. a bolt compensation pull rod; 5. a bellows; 6. a lower refractory lining; 7. an annular channel; 71. a first channel; 72. an annular channel; 73. a third channel; 74. a fourth channel; 8. a high temperature resistant damping ring; 9. and (3) a refractory lining.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Fig. 1-2 show: the utility model provides a compensator for blast furnace air supply arrangement, includes bellows 5, and both ends all are provided with ring flange 1 about bellows 5, and bellows 5 inboard is provided with the refractory lining, and the refractory lining is including last refractory lining 9 and the lower refractory lining 6 that top-down coaxial setting in proper order, forms annular channel 7 between last refractory lining 9 and the lower refractory lining 6, and annular channel 7 is used for providing activity allowance for the displacement of last refractory lining 9 and lower refractory lining 6 when the compensator warp.
Wherein the annular passage 7 includes a first passage 71, a second passage 72, a third passage 73, and a fourth passage 74 which are sequentially communicated.
The first passage 71 is provided in the radial direction with one end communicating with the inner cavity of the refractory lining and the other end communicating with the second passage 72 provided in the axial direction, and the fourth passage 74 is also provided in the radial direction with one end communicating with the inner cavity of the bellows 5 and the other end communicating with the second passage 72 through the third passage 73 provided obliquely upward.
Wherein the areas of the first channel 71 and the third channel 73 are the same, the areas of the second channel 72 and the fourth channel 74 are the same, and the areas of the first channel 71 and the third channel 73 are smaller than the areas of the second channel 72 and the fourth channel 74.
The pressure is also high because the air in the inner cavity of the refractory lining is high in temperature, so that the air flows from the high-pressure end of the inner cavity to the low-pressure end of the inner cavity of the corrugated tube 5 through the annular channel 7, the air flow speed is increased when the air flows through the first channel 71 in the flowing process, the pressure and the temperature are reduced, when the air flows from the first channel 71 to the second channel 72, the air flow forms strong vortex due to the sudden expansion of the area, the air flow speed is almost equal to zero in the second channel 72 which is much larger than the inner volume of the first channel 71, the kinetic energy is changed into heat all by the vortex effect, the air is heated, the temperature of the air is increased from the temperature when the air flows through the first channel 71 to the temperature before the air flows into the second channel 72, the air flow speed is gradually reduced as the air pressure is reduced when the air flows into the third channel 73, the air flow speed is reduced in turn, the air flow speed is reduced gradually as the air pressure is reduced, and the high-temperature overflowed from the refractory lining is reduced.
And the first channel 71 and the fourth channel 74 are arranged along the axial direction, the second channel 72 is arranged along the radial direction, and the third channel 73 is arranged along the inclined direction, so that the movable allowance in multiple directions of the axial direction, the radial direction and the angular direction can be generated when the lower refractory lining 6 and the upper refractory lining 9 are displaced.
Example 2
This embodiment differs from embodiment 1 in that: in order to further protect the lower refractory lining 6 and the upper refractory lining 9, a high temperature resistant damping ring 8 is provided on the inner wall of the lower side of the third channel 73, and the high temperature resistant damping ring 8 is made of silicon carbide which is not only high temperature resistant but also excellent in fracture toughness and thermal shock resistance, thereby being used for absorbing impact force generated when the lower refractory lining 6 and the upper refractory lining 9 are displaced, and protecting the lower refractory lining 6 and the upper refractory lining 9.
Example 3
This embodiment differs from embodiment 1 in that: a flexible insulation material is filled between the refractory lining and the bellows 5, the flexible insulation material comprising heat resistant cotton. The heat-resistant cotton is flexible and elastic, and basically does not influence the capacity of the compensator to absorb the thermal deformation of the pipeline in the axial direction, the transverse direction and the angular direction, so that the heat insulation effect is improved, the temperature of the corrugated pipe 5 is further reduced, and the service life of the corrugated pipe is prolonged.
Example 4
This embodiment differs from embodiment 1 in that: the outside of ring flange 1 all with be provided with otic placode 3, be connected through bolt compensation pull rod 4 between the otic placode 3 to can the axial maximum deflection of bolt compensation pull rod 4 control compensator, and set up screw 2 along vertical direction at ring flange 1 terminal surface, be convenient for realize bolted connection between screw 2 and the pipeline.
Claims (4)
1. The compensator for the blast furnace air supply device is characterized by comprising a corrugated pipe (5), wherein flange plates (1) are arranged at the upper end and the lower end of the corrugated pipe (5), a fireproof lining is arranged on the inner side of the corrugated pipe (5), the fireproof lining comprises an upper fireproof lining (9) and a lower fireproof lining (6) which are coaxially arranged in sequence from top to bottom, an annular channel (7) is formed between the upper fireproof lining (9) and the lower fireproof lining (6), and the annular channel (7) is used for providing movable allowance for the displacement of the upper fireproof lining (9) and the lower fireproof lining (6) when the compensator is deformed;
wherein the annular channel (7) comprises a first channel (71), a second channel (72), a third channel (73) and a fourth channel (74) which are communicated in sequence;
the first channel (71) is arranged along the radial direction, one end of the first channel is communicated with the inner cavity of the refractory lining, the other end of the first channel is communicated with the second channel (72) arranged along the axial direction, the fourth channel (74) is also arranged along the radial direction, one end of the fourth channel is communicated with the inner cavity of the corrugated pipe (5), and the other end of the fourth channel is communicated with the second channel (72) through the third channel (73) which is arranged obliquely upwards;
the areas of the first channel (71) and the third channel (73) are the same, the areas of the second channel (72) and the fourth channel (74) are the same, the areas of the first channel (71) and the third channel (73) are smaller than the areas of the second channel (72) and the fourth channel (74), and a high-temperature-resistant damping ring (8) is arranged on the inner wall of the lower side of the third channel (73).
2. The compensator for a blast furnace air supply device according to claim 1, wherein: the high-temperature-resistant damping ring (8) is made of silicon carbide.
3. The compensator for a blast furnace air supply device according to claim 1, wherein: and a flexible heat insulation material is filled between the fireproof lining and the corrugated pipe (5).
4. The compensator for a blast furnace air supply device according to claim 1, wherein: the outer sides of the flange plates (1) are respectively provided with an ear plate (3), and the ear plates (3) are connected through a bolt compensation pull rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321502512.9U CN220337801U (en) | 2023-06-13 | 2023-06-13 | Compensator for blast furnace air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321502512.9U CN220337801U (en) | 2023-06-13 | 2023-06-13 | Compensator for blast furnace air supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220337801U true CN220337801U (en) | 2024-01-12 |
Family
ID=89444541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321502512.9U Active CN220337801U (en) | 2023-06-13 | 2023-06-13 | Compensator for blast furnace air supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220337801U (en) |
-
2023
- 2023-06-13 CN CN202321502512.9U patent/CN220337801U/en active Active
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