CN113187981A - Nonmetal expansion joint structure for connecting combustion engine and waste heat boiler - Google Patents
Nonmetal expansion joint structure for connecting combustion engine and waste heat boiler Download PDFInfo
- Publication number
- CN113187981A CN113187981A CN202110525904.6A CN202110525904A CN113187981A CN 113187981 A CN113187981 A CN 113187981A CN 202110525904 A CN202110525904 A CN 202110525904A CN 113187981 A CN113187981 A CN 113187981A
- Authority
- CN
- China
- Prior art keywords
- gas turbine
- expansion joint
- lining plate
- inlet flue
- waist
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002918 waste heat Substances 0.000 title claims abstract description 13
- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 title description 7
- 239000007789 gas Substances 0.000 claims abstract description 35
- 229920000742 Cotton Polymers 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 238000004321 preservation Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010754 BS 2869 Class F Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
Abstract
The invention relates to the technical field of connection structures of a gas turbine and a waste heat boiler, in particular to a nonmetal expansion joint structure for connecting the gas turbine and the waste heat boiler, which can effectively prevent heat preservation cotton from leaking and overtemperature and ensure the safe operation of a unit and comprises a gas turbine exhaust end and an inlet flue, wherein the gas turbine exhaust end is provided with gas turbine side inner heat preservation cotton, and the inlet flue is provided with boiler side inner heat preservation cotton; expansion joint heat insulation cotton is filled between the exhaust end of the gas turbine and the inlet flue and is positioned on the inner side of the skin; an annular lining plate is arranged on the inner side of the expansion joint heat insulation cotton, and two sides of the annular lining plate are fixed through bolts matched with nuts and gaskets.
Description
Technical Field
The invention relates to the technical field of connection structures of a gas turbine and a waste heat boiler, in particular to a non-metal expansion joint structure for connecting the gas turbine and the waste heat boiler.
Background
The exhaust of a gas turbine of the combined cycle power plant enters a waste heat boiler, and then the waste heat boiler generates steam to enter a steam turbine by absorbing the exhaust heat of the gas turbine. Due to the thermal displacement of the exhaust diffusion section of the combustion engine, a non-metal expansion joint needs to be arranged between the outlet of the combustion engine and the inlet of the boiler. At present, the exhaust temperature of class F and class H gas turbines in the mainstream of the market is over 600 ℃, meanwhile, the exhaust flow is very high, the diameters of outlets of the gas turbines are very large, generally about 7 meters to 8 meters, and the flow rate in a flue sometimes exceeds 100m/s, so that the operating condition of a non-metal expansion joint connected with a waste heat boiler of the gas turbine is poor. Exhaust gas of a combustion engine is easy to leak into the internal heat insulation of the nonmetal expansion joint during the actual operation of the common nonmetal expansion joint, so that heat insulation cotton at the connecting part is leaked, the outer surface of the expansion joint is over-temperature, and even the safe operation of a combined unit is influenced.
Disclosure of Invention
In order to solve the problems that the existing heat insulation cotton leaks and the operation of a unit is influenced by the overtemperature of the outer surface of an expansion joint, the invention provides a non-metal expansion joint structure for connecting a combustion engine and a waste heat boiler, which can effectively prevent the heat insulation cotton from leaking and overtemperature and ensure the safe operation of the unit.
The technical scheme is as follows: a nonmetal expansion joint structure for connecting a gas turbine and a waste heat boiler comprises a gas turbine exhaust end and an inlet flue, wherein the gas turbine exhaust end is provided with side internal heat insulation cotton of the gas turbine, and the inlet flue is provided with side internal heat insulation cotton of the boiler; expansion joint heat insulation cotton is filled between the exhaust end of the gas turbine and the inlet flue and is positioned on the inner side of the skin; an annular lining plate is arranged on the inner side of the expansion joint heat insulation cotton, and two sides of the annular lining plate are fixed through bolts matched with nuts and gaskets.
The gas exhaust end inner wall structure is characterized in that one side of the annular inner lining plate is provided with a fixed round hole and a radial waist-shaped hole, the other side of the annular inner lining plate is provided with an axial waist-shaped hole, one end of the screw is fixed on the inner surface of the outer wall of the gas exhaust end and the inner surface of the outer wall of the inlet flue, the other end of the screw penetrates through the fixed round hole, the radial waist-shaped hole or the axial waist-shaped hole and is matched with the gasket and the nut to realize connection with the annular inner lining plate, the size of the gasket is larger than the fixed round hole, the radial waist-shaped hole and the axial waist-shaped hole, and the gasket is provided with a through hole matched with the size of the screw.
After the invention is adopted, the expansion joint heat preservation cotton is filled in the skin between the combustion engine and the boiler, and the lining plate is matched to isolate the gas exhaust from the skin, thereby preventing the skin from overtemperature in actual operation and ensuring the safe operation of the unit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged cross-sectional view of the present invention;
FIG. 3 is a partial schematic view of an inner liner;
fig. 4 is a schematic view of a different shim plate.
Detailed Description
As shown in fig. 1 to 4, the nonmetal expansion joint structure for connecting the gas turbine and the waste heat boiler comprises a gas turbine exhaust end 1 and an inlet flue 2, wherein the gas turbine exhaust end 1 is provided with a gas turbine side inner heat insulation cotton 3, the inlet flue 2 is provided with a boiler side inner heat insulation cotton 4, the outer wall of the gas turbine exhaust end 1 and the outer wall of the inlet flue 2 are both provided with a circular ring 5, annular angle steels 6 are welded on the circular ring 5, and the two annular angle steels 6 are connected through a skin 7 and a bolt 8; the expansion joint heat-preservation cotton 9 is filled between the exhaust end 1 of the gas turbine and the inlet flue 2 and is positioned on the inner side of the skin 7; an annular lining plate 10 is arranged on the inner side of the expansion joint heat insulation cotton 9, and two sides of the annular lining plate 10 are fixed through screws 11 matched with nuts and gaskets 12 respectively.
One side of the annular lining plate 10 is provided with a fixed round hole 13 and a radial waist-shaped hole 14, the other side is provided with an axial waist-shaped hole 15 which comprises an axial small-diameter waist-shaped hole and an axial large-diameter waist-shaped hole, one end of a screw rod 11 is fixed on the inner surface of the outer wall of the gas exhaust end 1 and the inner surface of the outer wall of the inlet flue 2, the other end of the screw rod 11 penetrates through the fixed round hole 13, the radial waist-shaped hole 14 or the axial waist-shaped hole 15 and is connected with the annular lining plate 10 through a gasket 12 and a nut in a matching way, the gasket 12 is correspondingly round or waist-shaped and has a size larger than the fixed round hole 13, the radial waist, by providing the waist-shaped holes, the inner lining plate 10 can be ensured to freely expand in the axial direction and the radial direction in a thermal state, meanwhile, the inner lining plate 10 is ensured not to integrally and freely shift and rotate under the blowing of smoke, and the gasket 12 with larger size can shield the open hole on the inner lining plate 10.
In practice, the lining plate 10 is inserted into the screw 11, and the gasket 12 is covered to cover the opening of the lining plate 10. After the gasket 12 and the nut are installed, the nut is unscrewed for a half turn, and then the gasket 12, the nut and the bolt 1 are spot-welded to ensure free expansion of the joint lining plate 10 in the radial direction and the axial direction.
Claims (1)
1. A nonmetal expansion joint structure for connecting a gas turbine and a waste heat boiler comprises a gas turbine exhaust end and an inlet flue, wherein the gas turbine exhaust end is provided with side internal heat insulation cotton of the gas turbine, and the inlet flue is provided with side internal heat insulation cotton of the boiler; expansion joint heat insulation cotton is filled between the exhaust end of the gas turbine and the inlet flue and is positioned on the inner side of the skin; an annular lining plate is arranged on the inner side of the expansion joint heat insulation cotton, and two sides of the annular lining plate are fixed through bolts matched with nuts and gaskets respectively; one side of the annular lining plate is provided with a fixing circular hole and a radial waist-shaped hole, the other side of the annular lining plate is provided with an axial waist-shaped hole, one end of the screw is fixed on the inner surface of the outer wall of the gas exhaust end and the inner surface of the outer wall of the inlet flue, the other end of the screw penetrates through the fixing circular hole, the radial waist-shaped hole or the axial waist-shaped hole and is connected with the annular lining plate through the matching of the gasket and the nut, the size of the gasket is larger than that of the fixing circular hole, the radial waist-shaped hole and the axial waist-shaped hole, and the gasket is provided with a through hole matched with the size of the screw; the skin is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110525904.6A CN113187981A (en) | 2021-05-14 | 2021-05-14 | Nonmetal expansion joint structure for connecting combustion engine and waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110525904.6A CN113187981A (en) | 2021-05-14 | 2021-05-14 | Nonmetal expansion joint structure for connecting combustion engine and waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113187981A true CN113187981A (en) | 2021-07-30 |
Family
ID=76981813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110525904.6A Pending CN113187981A (en) | 2021-05-14 | 2021-05-14 | Nonmetal expansion joint structure for connecting combustion engine and waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113187981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623320A (en) * | 2022-02-15 | 2022-06-14 | 无锡华光环保能源集团股份有限公司 | Plate type suspender heat insulation structure of waste heat boiler and installation method thereof |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213970A (en) * | 1968-11-22 | 1970-11-25 | Hans Veissmann | Improvements in or relating to boilers |
| US4055152A (en) * | 1975-06-09 | 1977-10-25 | Maurice Vidalenq | Gas boiler, particularly for central heating |
| CN201373206Y (en) * | 2008-12-25 | 2009-12-30 | 赵德威 | Fabric expansion joint for waste heat power generation |
| CN101709819A (en) * | 2009-10-12 | 2010-05-19 | 深圳市彩阳电力技术有限公司 | Non-metallic expansion joint with stainless steel full-floating composite deflector |
| CN103912750A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Expansion joint structure for preventing material reverse-moving |
| CN204026016U (en) * | 2014-08-01 | 2014-12-17 | 浙江海丰电力设备有限公司 | Exhaust heat boiler import non-metal expansion joint |
| KR20150065458A (en) * | 2013-12-05 | 2015-06-15 | 린나이코리아 주식회사 | Smoke pipe connecting structure |
| CN204478006U (en) * | 2015-03-11 | 2015-07-15 | 江苏国信淮安燃气发电有限责任公司 | Waste heat boiler air inlet flue expansion joint structure |
| CN104948869A (en) * | 2014-03-27 | 2015-09-30 | 江苏奎泽机械工业有限公司 | Nonmetallic expansion joint used for flue gas duct of boiler |
| CN205013970U (en) * | 2015-10-08 | 2016-02-03 | 诸暨市沣泽动力机械有限公司 | Heat -proof device of super temperature of combustion engine non -metallic expansion joint |
| CN209229212U (en) * | 2018-08-23 | 2019-08-09 | 沈阳市红星密封材料厂 | A kind of high temperature resistant non-metal compensator |
| CN209977545U (en) * | 2019-05-16 | 2020-01-21 | 诸暨市沣泽动力机械有限公司 | Novel non-metallic expansion joint of gas turbine power plant |
| CN110822425A (en) * | 2019-11-01 | 2020-02-21 | 苏州新长光热能科技有限公司 | Protection device capable of prolonging service life of radiant tube |
| CN111637453A (en) * | 2020-06-30 | 2020-09-08 | 无锡华光环保能源集团股份有限公司 | Sealing structure between heat-insulation slag discharge pipe and air distribution plate |
| US10995883B1 (en) * | 2020-01-31 | 2021-05-04 | Zepco, LLC | Penetration seal system and methods |
| CN216158563U (en) * | 2021-05-14 | 2022-04-01 | 无锡华光环保能源集团股份有限公司 | Non-metal expansion joint structure for connecting gas turbine and waste heat boiler |
-
2021
- 2021-05-14 CN CN202110525904.6A patent/CN113187981A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213970A (en) * | 1968-11-22 | 1970-11-25 | Hans Veissmann | Improvements in or relating to boilers |
| US4055152A (en) * | 1975-06-09 | 1977-10-25 | Maurice Vidalenq | Gas boiler, particularly for central heating |
| CN201373206Y (en) * | 2008-12-25 | 2009-12-30 | 赵德威 | Fabric expansion joint for waste heat power generation |
| CN101709819A (en) * | 2009-10-12 | 2010-05-19 | 深圳市彩阳电力技术有限公司 | Non-metallic expansion joint with stainless steel full-floating composite deflector |
| KR20150065458A (en) * | 2013-12-05 | 2015-06-15 | 린나이코리아 주식회사 | Smoke pipe connecting structure |
| CN104948869A (en) * | 2014-03-27 | 2015-09-30 | 江苏奎泽机械工业有限公司 | Nonmetallic expansion joint used for flue gas duct of boiler |
| CN103912750A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Expansion joint structure for preventing material reverse-moving |
| CN204026016U (en) * | 2014-08-01 | 2014-12-17 | 浙江海丰电力设备有限公司 | Exhaust heat boiler import non-metal expansion joint |
| CN204478006U (en) * | 2015-03-11 | 2015-07-15 | 江苏国信淮安燃气发电有限责任公司 | Waste heat boiler air inlet flue expansion joint structure |
| CN205013970U (en) * | 2015-10-08 | 2016-02-03 | 诸暨市沣泽动力机械有限公司 | Heat -proof device of super temperature of combustion engine non -metallic expansion joint |
| CN209229212U (en) * | 2018-08-23 | 2019-08-09 | 沈阳市红星密封材料厂 | A kind of high temperature resistant non-metal compensator |
| CN209977545U (en) * | 2019-05-16 | 2020-01-21 | 诸暨市沣泽动力机械有限公司 | Novel non-metallic expansion joint of gas turbine power plant |
| CN110822425A (en) * | 2019-11-01 | 2020-02-21 | 苏州新长光热能科技有限公司 | Protection device capable of prolonging service life of radiant tube |
| US10995883B1 (en) * | 2020-01-31 | 2021-05-04 | Zepco, LLC | Penetration seal system and methods |
| CN111637453A (en) * | 2020-06-30 | 2020-09-08 | 无锡华光环保能源集团股份有限公司 | Sealing structure between heat-insulation slag discharge pipe and air distribution plate |
| CN216158563U (en) * | 2021-05-14 | 2022-04-01 | 无锡华光环保能源集团股份有限公司 | Non-metal expansion joint structure for connecting gas turbine and waste heat boiler |
Non-Patent Citations (1)
| Title |
|---|
| 华东六省一市电力工程（电力）学会: "锅炉设备及其系统", vol. 2, 中国电力出版社, pages: 218 - 219 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623320A (en) * | 2022-02-15 | 2022-06-14 | 无锡华光环保能源集团股份有限公司 | Plate type suspender heat insulation structure of waste heat boiler and installation method thereof |
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