CN216337464U - Sealing equipment for preventing gasification furnace annular gap fault - Google Patents
Sealing equipment for preventing gasification furnace annular gap fault Download PDFInfo
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- CN216337464U CN216337464U CN202122913151.4U CN202122913151U CN216337464U CN 216337464 U CN216337464 U CN 216337464U CN 202122913151 U CN202122913151 U CN 202122913151U CN 216337464 U CN216337464 U CN 216337464U
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- connecting net
- annular connecting
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- 238000002309 gasification Methods 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 title claims abstract description 28
- 239000002245 particle Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000007257 malfunction Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a sealing device for preventing gasification furnace annular space fault, which relates to the technical field of gasification furnaces and comprises: the labyrinth seal comprises an upper mounting plate, a lower mounting plate and a labyrinth seal; the upper mounting plate and the lower mounting plate are circular plates which are horizontally placed, circular holes are formed in the upper mounting plate and the lower mounting plate relatively, and the central axes of the upper mounting plate and the lower mounting plate are overlapped; the labyrinth sealing element comprises an annular plate and an annular connecting net, and the upper and lower lengths of the annular plate are greater than those of the annular connecting net; and the bottom/top of one annular plate is fixedly connected with one annular connecting net, at least one annular plate/annular connecting net and at least one annular connecting net/annular plate are alternately fixed on the lower surface of the upper mounting plate from inside to outside, and at least one annular connecting net/annular plate and at least one annular plate/annular connecting net are alternately fixed on the upper surface of the lower mounting plate from inside to outside. The utility model is arranged in the annular gap of the gasification furnace, can solve the problem of gas leakage caused by severe fluctuation of the furnace condition and ensures the stable operation of the gasification furnace.
Description
Technical Field
The utility model relates to the technical field of gasification furnaces, in particular to sealing equipment for preventing an annular gap fault of a gasification furnace.
Background
In the modern coal gasification technology, a pressurized pulverized coal gasification gasifier with an overhead pulverized coal burner and a water chilling device is generally designed to absorb reaction heat generated during combustion of the gasifier through wall heat exchange of a water-cooled wall, the water-cooled wall is generally formed by coiling a tube array and is not subjected to pressure, so that the gasifier is formed by a reaction chamber formed by a pressure-bearing shell and a water-cooled wall, and in the structure, a gap is formed between the inner side of the pressure-bearing shell and the outer side of the water-cooled wall, which is generally called an annular gap.
In normal operation, the operating temperature of the pressure-bearing shell is about 100 ℃, the operating temperature of the water-cooling wall is about 200 ℃, therefore, in the process of raising the temperature and raising the pressure from cold state normal temperature to the operating temperature, the whole equipment can form thermal expansion due to the temperature rise, in order to absorb the expansion, a gap is generally arranged between the water-cooling wall and the pressure-bearing shell, when the reaction in the furnace fluctuates, the gap can cause high-temperature gas or reactant in the furnace to reversely flow into an annular gap, and the combustion temperature in the furnace is as high as 1500 ℃ on average, so the annular gap is easy to be damaged, and for the condition, protective gas protection is generally arranged at the position.
Because the gasification furnace is integrally large, in order to ensure that the clearance between the water-cooled wall and the pressure-bearing shell can sufficiently absorb the expansion amount of the whole equipment, the clearance is difficult to accurately calculate and can only be designed to be large as much as possible, so that although the annular space protection gas exists, when the furnace condition fluctuates severely or the furnace pressure fluctuates due to system fluctuation, high-temperature gas or reactant can still flow into the annular space, and the annular space is damaged or the water-cooled wall is flushed with the residual reactant for a long time, so that the water-cooled wall leakage condition is caused.
Disclosure of Invention
Aiming at the requirements and the defects of the prior art development, the utility model provides the sealing equipment for preventing the gasification furnace from annular gap faults so as to fully deal with the problem of gas leakage caused by severe fluctuation of furnace conditions, and simultaneously, reactants such as dust and the like generated after pulverized coal combustion are prevented from passing through the gap, so that the stable operation of the gasification furnace is ensured.
The utility model discloses a sealing device for preventing gasification furnace annular gap faults, which adopts the following technical scheme for solving the technical problems:
a sealing device for preventing the annular gap fault of a gasification furnace structurally comprises an upper mounting plate, a lower mounting plate and a labyrinth sealing element;
the upper mounting plate and the lower mounting plate are both horizontally arranged circular plates, circular holes are oppositely formed in the upper mounting plate and the lower mounting plate, and the central axis of the upper mounting plate is coincided with the central axis of the lower mounting plate;
the labyrinth sealing element also comprises a plurality of annular plates and a plurality of annular connecting nets, the inner diameters of the plurality of annular plates and the plurality of annular connecting nets are sequentially increased, and the upper and lower lengths of the annular plates are greater than the upper and lower lengths of the annular connecting nets;
the bottom/top of one annular plate is fixedly connected with an annular connecting net, at least one annular plate and at least one annular connecting net are alternately arranged from inside to outside and are fixed on the lower surface of the upper mounting plate, at least one annular connecting net and at least one annular plate are alternately arranged from inside to outside and are fixed on the upper surface of the lower mounting plate,
or,
and the bottom/top of one annular plate is fixedly connected with one annular connecting net, at least one annular connecting net and at least one annular plate are alternately arranged from inside to outside and are fixed on the lower surface of the upper mounting plate, and at least one annular plate and at least one annular connecting net are alternately arranged from inside to outside and are fixed on the upper surface of the lower mounting plate.
Alternatively, the labyrinth seal comprises the same number of annular plates and annular connecting webs.
Alternatively, in the labyrinth seal, the number of annular plates fixed to the upper mounting plate/the lower mounting plate is one more/one less than the number of annular connecting nets.
Optionally, the annular connecting net is an integral structure formed by weaving a plurality of layers of connecting net bodies.
Further optionally, after the annular connecting net is fixedly connected with the annular plate and the upper mounting plate/lower mounting plate, the vertical stretching length of the annular connecting net does not exceed 5 mm.
Specifically, the upper mounting plate, the lower mounting plate and the labyrinth seal are all made of stainless steel materials;
the annular plate is welded with the annular connecting net;
the annular plate is welded with the lower surface of the upper mounting plate/the upper surface of the lower mounting plate;
the annular connecting net is welded and connected with the upper surface of the lower mounting plate/the lower surface of the upper mounting plate.
Preferably, the pore size of the annular connecting net allows micron-sized particles to pass through.
Compared with the prior art, the sealing equipment for preventing the gasification furnace annular space from being failed has the beneficial effects that:
(1) the utility model is arranged in the annular gap of the gasification furnace, and can prevent reactants such as dust and the like after pulverized coal combustion from passing through the gap on the premise of fully coping with the problem of gas leakage caused by severe fluctuation of the furnace condition, thereby ensuring the stable operation of the gasification furnace;
(2) the labyrinth sealing element comprises a plurality of annular plates and a plurality of annular connecting nets, wherein one annular plate is fixedly connected with one annular connecting net to serve as a layer of filtering, and labyrinth multi-layer filtering can be formed on the basis of the interval layout and different lengths of the annular plates and the annular connecting nets so as to control the precision of preventing particles from being reversed on a micron scale on the basis of ensuring that protective gas uniformly passes through;
(3) the utility model adopts stainless steel materials, and has the advantages of stable welding and installation and corrosion resistance.
Drawings
FIG. 1 is a front view of the structure of the first embodiment of the present invention;
FIG. 2 is a front sectional view of FIG. 1;
FIG. 3 is a bottom view of the upper mounting plate of FIG. 1;
FIG. 4 is a front view of the structure of the second embodiment of the present invention;
fig. 5 is a front sectional view of fig. 4.
The reference information in the drawings indicates:
1. go up mounting panel, 2, lower mounting panel, 3, annular plate, 4, annular connection net, 5, circular port.
Detailed Description
In order to make the technical scheme, the technical problems to be solved and the technical effects of the present invention more clearly apparent, the following technical scheme of the present invention is clearly and completely described with reference to the specific embodiments.
The first embodiment is as follows:
with reference to fig. 1, 2 and 3, the present embodiment provides a sealing apparatus for preventing gasification furnace annular gap failure, which structurally includes an upper mounting plate 1, a lower mounting plate 2 and a labyrinth seal, wherein the upper mounting plate and the lower mounting plate are made of stainless steel materials.
Go up mounting panel 1 and lower mounting panel 2 and be the circular slab that the level was placed, go up mounting panel 1 and lower mounting panel 2 and go up to open relatively and be equipped with circular port 5, and the central axis coincidence of going up mounting panel 1 is in the central axis of lower mounting panel 2.
The labyrinth seal comprises three annular plates 3 and three annular connecting nets 4, wherein the annular connecting nets 4 are of an integrated structure formed by weaving a plurality of layers of connecting net bodies. The inner diameters of the three annular plates 3 and the three annular connecting nets 4 are sequentially increased, the bottom/top of one annular plate 3 is connected with one annular connecting net 4 in a welding mode, the upper and lower lengths of the annular plates 3 are larger than the upper and lower lengths of the annular connecting nets 4, and micron-sized particles are allowed to pass through the apertures of the annular connecting nets 4.
In this embodiment, the specific layout of the labyrinth seal is as follows: two annular connecting nets 4 and an annular plate 3 are arranged and welded on the lower surface of the upper mounting plate 1 from inside to outside in an alternating mode, two annular plates 3 and an annular connecting net 4 are arranged and welded on the upper surface of the lower mounting plate 2 from inside to outside in an alternating mode, after the integral connection is completed, the annular plates 3 and the annular connecting nets 4 which are connected in a welding mode are arranged in three layers from inside to outside, and in addition, the annular plates 3 and the annular connecting nets 4 are different in length, a labyrinth type route which can accommodate micron-sized particles to pass through is formed.
Example two:
with reference to fig. 4 and 5, the present embodiment provides a sealing apparatus for preventing gasification furnace annular gap failure, which structurally includes an upper mounting plate 1, a lower mounting plate 2 and a labyrinth seal, wherein the upper mounting plate and the lower mounting plate are made of stainless steel materials.
Go up mounting panel 1 and lower mounting panel 2 and be the circular slab that the level was placed, go up mounting panel 1 and lower mounting panel 2 and go up to open relatively and be equipped with circular port 5, and the central axis coincidence of going up mounting panel 1 is in the central axis of lower mounting panel 2.
The labyrinth seal comprises four annular plates 3 and four annular connecting nets 4, wherein the annular connecting nets 4 are of an integral structure formed by weaving a plurality of layers of connecting net bodies. The inner diameters of the four annular plates 3 and the four annular connecting nets 4 are sequentially increased, the bottom/top of one annular plate 3 is connected with one annular connecting net 4 in a welding mode, the upper and lower lengths of the annular plates 3 are larger than the upper and lower lengths of the annular connecting nets 4, and micron-sized particles are allowed to pass through the apertures of the annular connecting nets 4.
In this embodiment, the specific layout of the labyrinth seal is as follows: two annular connecting nets 4 and two annular plates 3 are arranged and welded on the lower surface of the upper mounting plate 1 from inside to outside in an alternating manner, two annular plates 3 and two annular connecting nets 4 are arranged and welded on the upper surface of the lower mounting plate 2 from inside to outside in an alternating manner, after the integral connection is completed, the welded and connected annular plates 3 and annular connecting nets 4 are arranged in four layers from inside to outside, and in addition, the annular plates 3 and the annular connecting nets 4 are different in length, so that a labyrinth type route which can accommodate micron-sized particles to pass through is formed.
When the sealing device of the embodiment is used, the sealing device is arranged at the joint of the top of the water-cooled wall main coil of the gasification furnace and the pressure-bearing shell of the gasification furnace, after the installation is completed, the inner wall of the circular hole 5 of the upper mounting plate 1 in the sealing device is welded with the pressure-bearing shell of the gasification furnace, and the inner wall of the circular hole 5 of the lower mounting plate 2 in the sealing device is welded with the top of the main coil of the gasification furnace.
In summary, the sealing device for preventing the gasification furnace annular gap fault is arranged in the annular gap of the gasification furnace, and can prevent reactants such as dust and the like generated after pulverized coal combustion from passing through the gap on the premise of sufficiently dealing with the problem of gas leakage caused by severe fluctuation of furnace conditions, thereby ensuring the stable operation of the gasification furnace;
the principles and embodiments of the present invention have been described in detail using specific examples, which are provided only to aid in understanding the core technical content of the present invention. Based on the above embodiments of the present invention, those skilled in the art should make any improvements and modifications to the present invention without departing from the principle of the present invention, and therefore, the present invention should fall into the protection scope of the present invention.
Claims (7)
1. The sealing equipment for preventing the annular space fault of the gasification furnace is characterized by structurally comprising an upper mounting plate, a lower mounting plate and a labyrinth sealing element;
the upper mounting plate and the lower mounting plate are both horizontally arranged circular plates, circular holes are formed in the upper mounting plate and the lower mounting plate in a relative opening mode, and the central axis of the upper mounting plate is coincided with the central axis of the lower mounting plate;
the labyrinth sealing element also comprises a plurality of annular plates and a plurality of annular connecting nets, the inner diameters of the plurality of annular plates and the plurality of annular connecting nets are sequentially increased, and the upper and lower lengths of the annular plates are greater than the upper and lower lengths of the annular connecting nets;
the bottom/top of one annular plate is fixedly connected with one annular connecting net, at least one annular plate and at least one annular connecting net are alternately arranged from inside to outside and are fixed on the lower surface of the upper mounting plate, at least one annular connecting net and at least one annular plate are alternately arranged from inside to outside and are fixed on the upper surface of the lower mounting plate,
or,
the bottom/top of one annular plate is fixedly connected with one annular connecting net, at least one annular connecting net and at least one annular plate are alternately arranged and fixed on the lower surface of the upper mounting plate from inside to outside, and at least one annular plate and at least one annular connecting net are alternately arranged and fixed on the upper surface of the lower mounting plate from inside to outside.
2. The sealing apparatus for preventing the annular gap failure of the gasification furnace according to claim 1, wherein the labyrinth seal comprises the same number of annular plates and annular connection nets.
3. The sealing apparatus for preventing the annular gap malfunction of a gasification furnace according to claim 2, wherein in the labyrinth seal, the number of annular plates fixed to the upper mounting plate/the lower mounting plate is one more/one less than the number of annular connection nets.
4. The sealing device for preventing the annular gap fault of the gasification furnace according to claim 1, wherein the annular connecting net is an integrated structure woven by a plurality of layers of connecting net bodies.
5. The sealing apparatus for preventing the annular gap fault of the gasification furnace according to claim 4, wherein after the annular connecting net is fixedly connected with the annular plate and the upper mounting plate/the lower mounting plate, the upper and lower stretching lengths of the annular connecting net do not exceed 5 mm.
6. The sealing apparatus for preventing the annular gap of the gasification furnace from being failed according to claim 1, 4 or 5, wherein the upper mounting plate, the lower mounting plate and the labyrinth seal are all made of stainless steel material;
the annular plate is connected with the annular connecting net in a welding mode;
the annular plate is connected with the lower surface of the upper mounting plate/the upper surface of the lower mounting plate in a welding mode;
the annular connecting net is connected with the upper surface of the lower mounting plate/the lower surface of the upper mounting plate in a welding mode.
7. The sealing apparatus for preventing the annular gap failure of the gasification furnace according to claim 1, wherein the aperture of the annular connection net allows micron-sized particles to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122913151.4U CN216337464U (en) | 2021-11-23 | 2021-11-23 | Sealing equipment for preventing gasification furnace annular gap fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122913151.4U CN216337464U (en) | 2021-11-23 | 2021-11-23 | Sealing equipment for preventing gasification furnace annular gap fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216337464U true CN216337464U (en) | 2022-04-19 |
Family
ID=81154464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122913151.4U Active CN216337464U (en) | 2021-11-23 | 2021-11-23 | Sealing equipment for preventing gasification furnace annular gap fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216337464U (en) |
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2021
- 2021-11-23 CN CN202122913151.4U patent/CN216337464U/en active Active
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