CN110715312A - Hanging sealing device for tail flue of gas boiler - Google Patents
Hanging sealing device for tail flue of gas boiler Download PDFInfo
- Publication number
- CN110715312A CN110715312A CN201911015333.0A CN201911015333A CN110715312A CN 110715312 A CN110715312 A CN 110715312A CN 201911015333 A CN201911015333 A CN 201911015333A CN 110715312 A CN110715312 A CN 110715312A
- Authority
- CN
- China
- Prior art keywords
- flue
- sealing
- plate
- header
- shaped steel
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
Abstract
The invention relates to a hanging sealing device for a tail flue of a gas boiler. In recent years, steel enterprises have become a consensus in the industry for building pure-fired blast furnace gas and converter gas generator sets so as to improve the overall economic benefits of the enterprises. A domestic power generating set for pure combustion of blast furnace gas and converter gas is generally a high-pressure boiler or an ultrahigh-pressure boiler, the capacity is 50-150 MW, and the steam temperature is not higher than 540 ℃. The utility model provides a be used for gas boiler afterbody flue to hang sealing device which constitutes and includes: the device comprises a header (1), a flue sealing plate (2), an I-shaped steel assembly (3), a header pre-welding piece (4) and a flue protection plate (5), wherein the header and the flue protection plate are connected in a sealing mode, the flue is enabled to be sealed, the I-shaped steel assembly is arranged on one part of a truss inside the flue, the flue sealing plate and the header pre-welding piece are welded with the header in a sealing mode, and the flue sealing plate is connected with the I-shaped steel assembly through a pin shaft (6). The invention is applied to the field of gas boilers.
Description
The technical field is as follows:
the invention relates to a hanging sealing device for a tail flue of a gas boiler.
Background art:
in recent years, steel enterprises have become a consensus in the industry for building pure-fired blast furnace gas and converter gas generator sets so as to improve the overall economic benefits of the enterprises. A domestic power generating set for pure combustion of blast furnace gas and converter gas is generally a high-pressure boiler or an ultrahigh-pressure boiler, the capacity is 50-150 MW, and the steam temperature is not higher than 540 ℃. Under the market background, the harbour develops a higher-parameter subcritical box type boiler which can meet the market demand at the current stage by virtue of the technical advantages of the harbour, and the gas subcritical box type boiler rapidly obtains the approval of users due to the advantages of excellent and reliable performance, compact structure, better sealing performance, small occupied space and the like.
The invention content is as follows:
the invention aims to provide a hanging sealing device for a tail flue of a gas boiler.
The above purpose is realized by the following technical scheme:
the utility model provides a be used for gas boiler afterbody flue to hang sealing device which constitutes and includes: the device comprises a header, a flue sealing plate, an I-steel assembly, a header pre-welding piece and a flue protection plate, wherein the header is connected with the flue protection plate in a sealing mode, so that the flue is ensured to be sealed, the I-steel assembly is arranged on one part of a truss inside the flue, the flue sealing plate and the header pre-welding piece are welded with the header in a sealing mode, and the flue sealing plate is connected with the I-steel assembly through a pin shaft.
The hanging and sealing device for the tail flue of the gas boiler is characterized in that two reinforcing plates with the same structure are arranged between two flue sealing plates, I-shaped steel ear plates are inserted between the two reinforcing plates, and the reinforcing plates, the I-shaped steel assembly and the flue sealing plates are connected through pin shafts.
The I-steel ear plate extension length C on the I-steel component takes a value of 100-120 mm, the distance A between the top end of the I-steel component and the top end of the reinforcing plate takes a value of 20-25 mm, the distance B between the circle center position of the round hole on the reinforcing plate and the end part of the I-steel ear plate takes a value of 2/E +20mm, and the diameter PhiD of the round hole on the reinforcing plate takes a value of 35-45 mm.
The invention has the beneficial effects that:
1. the invention adopts a brand-new hanging sealing structure of the flue and the header, the structure is simple to manufacture and convenient to install, and the used materials are convenient and easy to obtain. While not limiting thermal expansion of the flue itself and relative thermal displacement between the flue and the header.
The flue sealing plate and the header pre-welding piece are required to be hermetically welded with the header, and the flue sealing plate is connected with the I-shaped steel assembly through the pin shaft, so that the sealing performance and the structural stability of the flue are ensured, and the thermal expansion between the flue and the header is not influenced.
The thickness delta 1 of the flue sealing plate, the size of the I-steel, the thickness delta 2 of the reinforcing plate, phi D and the like of the reinforcing plate are selected according to the calculation of the flue load, the size C in the graph 3 can be determined according to the size of a header pre-welded part, the value of the size C is generally 100mm ~ 120 mm.A can be determined according to the type of the I-steel, the values of the size C and the size E are generally 20 ~ 25 mm.B and 20 mm.D can be determined according to C and phi D, and the value of the value B is generally 2/E +20 mm.D and is generally 35 ~ 45 mm.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the rotation a-a in fig. 1.
FIG. 3 is a schematic structural view of an I-beam assembly.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a top view of fig. 3.
In the figure: 1. the device comprises a header, 2 a flue sealing plate, 3 an I-steel assembly, 4 a header pre-welding piece, 5 a flue protecting plate, 6 a pin shaft, 7 a reinforcing plate, 8 an I-steel ear plate.
The specific implementation mode is as follows:
example 1:
the utility model provides a be used for gas boiler afterbody flue to hang sealing device which constitutes and includes: the novel flue comprises a header 1, a flue sealing plate 2, an I-steel assembly 3, a header pre-welding piece 4 and a flue protection plate 5, wherein the header is connected with the flue protection plate in a sealing mode, so that the tightness of a flue is guaranteed, the I-steel assembly is arranged on one part of a truss inside the flue, the flue sealing plate and the header pre-welding piece are welded with the header in a sealing mode, and the flue sealing plate is connected with the I-steel through a pin shaft 6.
Example 2:
according to embodiment 1, the sealing device for hanging the tail flue of the gas boiler is characterized in that two reinforcing plates 7 with the same structure are arranged between two flue sealing plates, the I-shaped steel ear plates 8 are inserted between the two reinforcing plates, and the reinforcing plates, the I-shaped steel assembly and the flue sealing plates are connected through pin shafts.
Example 3:
according to the hanging and sealing device for the tail flue of the gas boiler in the embodiment 1 or 2, the extension length C of the joist steel ear plate on the joist steel assembly is 100-120 mm, the distance A between the top end of the joist steel assembly and the top end of the reinforcing plate is 20-25 mm, the distance B between the circle center position of the round hole on the reinforcing plate and the end part of the joist steel ear plate is 2/E +20mm, and the diameter PhiD of the round hole on the reinforcing plate is 35-45 mm.
Example 4:
the collection box and the flue protection plate must be connected in a sealing way, so that the tightness of the flue can be ensured. The I-steel assembly is a part of a truss inside the flue, and the temperature inside the flue is far higher than that outside the flue, so a certain expansion difference exists between the header and the flue guard plate. The flue sealing plate and the header pre-welding piece are required to be welded with the header in a sealing mode, and the flue sealing plate is connected with the I-shaped steel assembly through the pin shaft, so that the sealing performance and the structural stability of the flue are guaranteed, and the thermal expansion between the flue and the header is not influenced. The detailed structure of the I-beam assembly is shown in figure 3.
Example 5:
the thickness delta 1 of the flue sealing plate, the size of the I-steel, the thickness delta 2 of the reinforcing plate, the diameter D and the like must be calculated and selected according to the flue load, the size C in the graph 3 can be determined according to the size of a header pre-welded part, the value is generally 100mm ~ 120 mm.A can be determined according to the type of the I-steel, the values are generally 20 ~ 25 mm.B and E can be determined according to C and D, the value of B is generally 2/E +20 mm.D and the value is generally 35 ~ 45 mm.
Example 6:
the novel structure of the invention is successfully applied to the tail flues of a plurality of projects such as Qian 'an first stage, Qian' an second stage, Jiujiang wires, Zhongzhong Taide, Hebei Dongfeng Taide and the like, and is applied to the actual engineering design. The safety is put into operation successfully in the first period, and no problem is found up to now. The method can be popularized and applied in subsequent similar projects.
Claims (3)
1. The utility model provides a be used for gas boiler afterbody flue to hang sealing device which constitutes and includes: collection case, flue closing plate, I-steel subassembly, collection case weldment and flue backplate in advance, characterized by: the collecting box is connected with the flue guard plate in a sealing mode, so that the tightness of the flue is guaranteed, the I-shaped steel assembly is arranged on one part of a truss inside the flue, the flue sealing plate and the collecting box pre-welding piece are welded with the collecting box in a sealing mode, and the flue sealing plate is connected with the I-shaped steel assembly through a pin shaft.
2. The hanging and sealing device for the tail flue of the gas boiler as claimed in claim 1, which is characterized in that: two reinforcing plates with the same structure are arranged between the flue sealing plates, the I-shaped steel ear plates are inserted between the two reinforcing plates, and the reinforcing plates, the I-shaped steel assemblies and the flue sealing plates are connected through pin shafts.
3. The hanging and sealing device for the tail flue of the gas boiler as claimed in claim 2, which is characterized in that: the extension length C of the joist steel ear plate on the joist steel assembly is 100 mm-120 mm, the distance A between the top end of the joist steel assembly and the top end of the reinforcing plate is 20-25 mm, the distance B between the circle center position of the round hole on the reinforcing plate and the end part of the joist steel ear plate is 2/E +20mm, and the diameter PhiD of the round hole on the reinforcing plate is 35-45 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911015333.0A CN110715312B (en) | 2019-10-24 | 2019-10-24 | Hanging sealing device for tail flue of gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911015333.0A CN110715312B (en) | 2019-10-24 | 2019-10-24 | Hanging sealing device for tail flue of gas boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110715312A true CN110715312A (en) | 2020-01-21 |
| CN110715312B CN110715312B (en) | 2021-10-01 |
Family
ID=69214155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911015333.0A Active CN110715312B (en) | 2019-10-24 | 2019-10-24 | Hanging sealing device for tail flue of gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110715312B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777885A (en) * | 2012-07-04 | 2012-11-14 | 哈尔滨锅炉厂有限责任公司 | Partition wall for ultra-supercritical boiler economizer outlet flue |
| CN202647715U (en) * | 2012-07-04 | 2013-01-02 | 哈尔滨锅炉厂有限责任公司 | Compartment wall for outlet flue of ultra supercritical boiler economizer |
| CN103759244A (en) * | 2013-12-31 | 2014-04-30 | 上海四方锅炉集团工程成套股份有限公司 | Tail portion heating surface sealing supporting structure and industrial exhaust gas boiler |
| JP2014092349A (en) * | 2012-11-06 | 2014-05-19 | Mitsubishi Heavy Ind Ltd | Two-shell type self-supporting boiler |
| CN103912888A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Sealing device at bottom of tail flue of boiler |
| CN203797677U (en) * | 2014-03-28 | 2014-08-27 | 无锡华光锅炉股份有限公司 | Sealing device for tail smoke flue bottom of boiler |
| CN204372155U (en) * | 2014-12-24 | 2015-06-03 | 哈尔滨锅炉厂有限责任公司 | The sealing configuration of boiler back end ductwork |
| CN207797090U (en) * | 2018-01-31 | 2018-08-31 | 哈尔滨锅炉厂有限责任公司 | A kind of sliding connection structure for bypass flue |
-
2019
- 2019-10-24 CN CN201911015333.0A patent/CN110715312B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777885A (en) * | 2012-07-04 | 2012-11-14 | 哈尔滨锅炉厂有限责任公司 | Partition wall for ultra-supercritical boiler economizer outlet flue |
| CN202647715U (en) * | 2012-07-04 | 2013-01-02 | 哈尔滨锅炉厂有限责任公司 | Compartment wall for outlet flue of ultra supercritical boiler economizer |
| JP2014092349A (en) * | 2012-11-06 | 2014-05-19 | Mitsubishi Heavy Ind Ltd | Two-shell type self-supporting boiler |
| CN103759244A (en) * | 2013-12-31 | 2014-04-30 | 上海四方锅炉集团工程成套股份有限公司 | Tail portion heating surface sealing supporting structure and industrial exhaust gas boiler |
| CN103912888A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Sealing device at bottom of tail flue of boiler |
| CN203797677U (en) * | 2014-03-28 | 2014-08-27 | 无锡华光锅炉股份有限公司 | Sealing device for tail smoke flue bottom of boiler |
| CN204372155U (en) * | 2014-12-24 | 2015-06-03 | 哈尔滨锅炉厂有限责任公司 | The sealing configuration of boiler back end ductwork |
| CN207797090U (en) * | 2018-01-31 | 2018-08-31 | 哈尔滨锅炉厂有限责任公司 | A kind of sliding connection structure for bypass flue |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110715312B (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4520481B2 (en) | High temperature steam turbine plant | |
| CN105066098A (en) | Header of 620-DEG C steam parameter ultra supercritical unit boiler | |
| CN105066099A (en) | Collecting box of ultra 620-DEG C steam parameter ultra supercritical unit boiler | |
| CN110715312B (en) | Hanging sealing device for tail flue of gas boiler | |
| CN204574097U (en) | Air preheater and hot junction radial seal structure thereof | |
| CN201032144Y (en) | Seal structure of through-wall pipe and diaphragm type wall of coke dry quenching exhaust-heating boiler | |
| CN101809252B (en) | Steam turbine equipment | |
| CN110788506A (en) | Method for preventing deformation of water-cooled wall assembly | |
| CN212800231U (en) | High-strength heat-intercepting brick for heat recovery coke oven ascending pipe base and base combined brick | |
| CN105003903A (en) | Boiler header of ultrahigh steam parameter unit of more than 650 DEG C | |
| CN202581366U (en) | Smoke pipe joint with thermal sleeve | |
| CN213451669U (en) | Fluoroplastic heat exchanger sealing structure | |
| CN111237737B (en) | Heating surface pipe segmented positioning method applied to intelligent operation and maintenance of boiler | |
| CN212316155U (en) | Structure for preventing gas leakage of tuyere and tuyere sleeve structure | |
| CN204786317U (en) | Water -cooling wall release of stress groove | |
| CN205716182U (en) | Integral type union elbow | |
| CN206709680U (en) | A kind of Horizontal air preheater pipe and tube sheet attachment structure | |
| CN214198623U (en) | Novel structure for improving convective heat transfer capability of economizer | |
| CN2935055Y (en) | Configuration structure for coal-fired molten salt furnace and residual heat steam generator | |
| CN104913330A (en) | Air preheater and hot-end radial sealing device thereof | |
| CN214147960U (en) | Connecting structure of gas turbine exhaust section and boiler flue | |
| CN107677159A (en) | A kind of water-borne formula teflon heat exchanger body tube board supporting structure | |
| CN217272706U (en) | Sealing device for fan coal mill | |
| CN213807863U (en) | Flue gas flow guiding device of gas and steam combined cycle power generation waste heat boiler | |
| CN211624549U (en) | High-temperature large-caliber telescopic gas pipeline compensator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |