CN215335122U - Flange sealing device for expansion joint of waste heat pipeline of gas turbine - Google Patents
Flange sealing device for expansion joint of waste heat pipeline of gas turbine Download PDFInfo
- Publication number
- CN215335122U CN215335122U CN202120432558.2U CN202120432558U CN215335122U CN 215335122 U CN215335122 U CN 215335122U CN 202120432558 U CN202120432558 U CN 202120432558U CN 215335122 U CN215335122 U CN 215335122U
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- expansion joint
- frame
- gas turbine
- waste heat
- sealing device
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Abstract
The utility model discloses a sealing device for an expansion joint flange of a waste heat pipeline of a gas turbine, which comprises a frame framed on heat insulation cotton, wherein a skin and a heat insulation quilt are fixed at the top of the frame through a pressing strip, the bottom of the frame is arranged between mounting flanges of a flue through a fixing piece, a sealing gasket is clamped between the frame and the mounting flanges, the sealing gasket is composed of ceramic fibers, and a stainless steel wire mesh is wound outside the sealing gasket. The utility model aims to provide the expansion joint flange sealing device for the waste heat pipeline of the gas turbine, which meets the sealing requirement of the expansion joint, reduces the replacement cost of the expansion joint and has good high-temperature resistance effect.
Description
Technical Field
The utility model relates to the technical field of gas turbines, in particular to a flange sealing device for an expansion joint of a waste heat pipeline of a gas turbine.
Background
The expansion joint is a compensation device which utilizes the effective telescopic deformation of an elastic element to absorb the dimensional change of a pipeline or a container caused by expansion with heat and contraction with cold and the like, and the expansion joint in a flue of a gas turbine is easily damaged by frequent temperature strain and chemical corrosion. The existing expansion joint adopts a graphite gasket, but after the expansion joint is installed, spray leakage occurs between a flange of the expansion joint and a flue flange in the test operation process of a unit, the leakage point is wide, and the design requirement cannot be met. Considering that the waste gas reaches 520 ℃ of high temperature, the high-temperature air flow with 250mbar pressure scours the unit when leaking, so that the platform can not be normally used, potential safety hazards exist, and domestic transformation is needed. Therefore, a sealing device for an expansion joint flange of a waste heat pipeline of a gas turbine, which meets the sealing requirement of the expansion joint, reduces the replacement cost of the expansion joint and has good high-temperature resistance effect, is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide the expansion joint flange sealing device for the waste heat pipeline of the gas turbine, which meets the sealing requirement of the expansion joint, reduces the replacement cost of the expansion joint and has good high-temperature resistance effect.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a gas turbine exhaust heat pipeline expansion joint flange sealing device, includes the frame of frame on thermal-insulated cotton, the frame top is fixed with the covering and is thermal-insulated by through the layering, and the frame bottom passes through the mounting setting between the mounting flange of flue, it is equipped with seal gasket to press from both sides between frame and the mounting flange, seal gasket comprises ceramic fiber, and the outside winding of seal gasket has stainless wire net.
Further, the heat insulation quilt and the heat insulation cotton are both made of aluminum silicate cotton.
Compared with the prior art, the utility model has the following beneficial effects:
the expansion joint meets the use requirement of the expansion joint, the sealing gasket made of the ceramic fiber cloth has strong toughness and good high-temperature resistance effect, the applicable temperature is 800-1400 ℃, in order to enhance the strength of the ceramic fiber cloth, the strength of the ceramic fiber cloth is increased after a layer of stainless steel wire mesh is wound on the surface of the ceramic fiber cloth, two ceramic fiber cloth gaskets are additionally arranged in the fixing piece at each group of mounting flanges, and the mounting flanges achieve uniform stress after the fixing pieces are fastened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a gasket of the present invention.
Description of reference numerals:
the method comprises the following steps of 1-framework, 2-covering, 3-heat insulation quilt, 4-heat insulation cotton, 5-sealing gasket, 6-fixing piece, 7-mounting flange and 8-flue.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 and 2, the expansion joint flange sealing device for the waste heat pipeline of the gas turbine comprises a frame 1 framed on heat insulation cotton 4, wherein a skin 2 and a heat insulation quilt 3 are fixed at the top of the frame 1 through a pressing strip, the bottom of the frame 1 is arranged between mounting flanges 7 of a flue 8 through a fixing piece 6, a sealing gasket 5 is clamped between the frame 1 and the mounting flanges 7, the sealing gasket 5 is made of ceramic fibers, and a stainless steel wire mesh is wound outside the sealing gasket 5; the heat insulation quilt 3 and the heat insulation cotton 4 are both made of aluminum silicate cotton.
The sealing gasket 5 made of the ceramic fiber cloth has strong toughness and good high-temperature resistance effect, the applicable temperature is 800-1400 ℃, in order to enhance the strength of the ceramic fiber cloth, the strength of the ceramic fiber cloth is increased after a layer of stainless steel wire mesh is wound on the surface of the ceramic fiber cloth, two ceramic fiber cloth gaskets are added inside and outside the fixing part 6 at the mounting flange 7 of each group, and the mounting flange 7 is stressed uniformly after the fixing part 6 is fastened.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. The utility model provides a gas turbine waste heat pipeline expansion joint flange sealing device, includes the frame of frame on thermal-insulated cotton, the frame top is fixed with the covering and is thermal-insulated by through the layering, and the frame bottom passes through the mounting setting between the mounting flange of flue, its characterized in that: a sealing gasket is clamped between the frame and the mounting flange and is composed of ceramic fibers, and a stainless steel wire mesh is wound outside the sealing gasket.
2. The gas turbine waste heat pipeline expansion joint flange sealing device of claim 1, wherein: the heat insulation quilt and the heat insulation cotton are both made of aluminum silicate cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120432558.2U CN215335122U (en) | 2021-02-26 | 2021-02-26 | Flange sealing device for expansion joint of waste heat pipeline of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120432558.2U CN215335122U (en) | 2021-02-26 | 2021-02-26 | Flange sealing device for expansion joint of waste heat pipeline of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215335122U true CN215335122U (en) | 2021-12-28 |
Family
ID=79582459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120432558.2U Active CN215335122U (en) | 2021-02-26 | 2021-02-26 | Flange sealing device for expansion joint of waste heat pipeline of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215335122U (en) |
-
2021
- 2021-02-26 CN CN202120432558.2U patent/CN215335122U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |