CN106051726A - Header of ultra 700 DEG C advanced ultra-supercritical unit boiler - Google Patents
Header of ultra 700 DEG C advanced ultra-supercritical unit boiler Download PDFInfo
- Publication number
- CN106051726A CN106051726A CN201610381269.8A CN201610381269A CN106051726A CN 106051726 A CN106051726 A CN 106051726A CN 201610381269 A CN201610381269 A CN 201610381269A CN 106051726 A CN106051726 A CN 106051726A
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- Prior art keywords
- header
- ultra
- alloy
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- surpassing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/22—Drums; Headers; Accessories therefor
- F22B37/228—Headers for distributing feedwater into steam generator vessels; Accessories therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a header of an ultra 700 DEG C advanced ultra-supercritical unit boiler. With the increasing improvement and progress of the production and living level of China, the demand for electric power is larger and larger, and meanwhile the requirement for environmental protection and pollution discharge control is higher and higher. The header of the ultra 700 DEG C advanced ultra-supercritical unit boiler mainly comprises a header body (1) and pipe connectors (2). One ends of the pipe connectors are welded with the header body through full penetration weld fillet welds or through partial penetration weld fillet welds, and the other ends of the header pipe connectors are welded with small-diameter pipes of the heating face (including a superheater and a reheater) of a boiler. The main structure of the header is a header barrel made of an alloy 740H large-diameter pipe, and the pipe connectors are made of alloy 740H small-diameter pipes. The header is mainly applied to the ultra 700 DEG C advanced ultra-supercritical unit boiler.
Description
Technical field:
The present invention relates to a kind of header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units.
Background technology:
Along with China produces and the improving constantly and progressive of living standard, increasing to the demand of electric power, simultaneously to environmental protection
More and more higher with the requirement controlling disposal of pollutants.Actively development is efficient, energy-conservation, Large Copacity, clean environmental protection, elder generation that reliability is high
Enter ultra supercritical (A-USC) thermal power generation unit imperative.From the point of view of technically, improve fired power generating unit main steam temperature and
Reheat steam temperature is the most effective approach improving its thermal efficiency, is also the research and development direction of thermoelectricity technology core in future.
At present, Laiwu, Huaneng Group power plant is the boiler that current world pressure is maximum, temperature is the highest, efficiency is the highest, vapor (steam) temperature
Being 605/623/623 DEG C, gross coal consumption rate is 256.16 grams of every kilowatt hours.Compared with ripe unit, A-USC technology is at generating dress
Difference in standby layout is little, but material needs to tolerate higher temperature and bigger pressure, simultaneously to New-type boiler material portion
Part (especially boiler header) requires the strictest.
Based on above-mentioned background condition, have devised that a kind of being applied to surpasses 700 DEG C of parameter advanced person's Boiler of Ultra-supercritical Units
Header.
Summary of the invention:
It is an object of the invention to provide a kind of header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units.
Above-mentioned purpose is realized by following technical scheme:
A kind of header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, mainly includes header body and pipe joint part, described
Pipe joint one end and header body use fillet weld seam, the described pipe joint other end to weld with boiler heating surface small bore tube
Connect.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described header cylinder uses alloy 740H
Large-caliber stainless steel pipe manufactures, and described heavy caliber is nominal diameter more than 100 millimeters, and described pipe joint uses alloy
740H small-bore stainless steel tube manufacture, described is small-bore for nominal diameter less than 100 millimeters.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described welds types is complete penetraction and fusion in welding type or office
Portion's through welding type.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described alloy 740H metallographic structure is difficult to understand
Family name's body rustless steel, has excellent high mechanical property.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described alloy 740H heavy caliber and alloy
The small-bore middle Cr content of 740H is 23.5 ~ 25.5%, and Ni content is about 40 ~ 60%, and Co content is about 15 ~ 22%, and remaining is ferrum element
Body.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described alloy 740H heavy caliber and alloy
The small-bore middle Cr content of 740H is 23.5 %, and Ni content is about 40%, and Co content is about 15%, and remaining is ferrite.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described alloy 740H heavy caliber and alloy
The small-bore middle Cr content of 740H is 25.5%, and Ni content is about 60%, and Co content is about 22%, and remaining is ferrite.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described alloy 740H heavy caliber and alloy
The small-bore middle Cr content of 740H is 24%, and Ni content is about 50%, and Co content is about 18.5%, and remaining is ferrite.
The described header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, described alloy 740H alloy 750 DEG C is allowable
Stress is more than or equal to 84.1MPa.
Beneficial effect:
1. the present invention is in order to ensure the safety of 700 DEG C of advanced Boiler of Ultra-supercritical Unit headers and reduce the manufacture difficulty of header
Degree.Present invention alloy 740H replaces the P92 material that tradition is ripe to manufacture boiler header body, makes with alloy 740H
Making boiler header pipe joint, the alloy 740H material of high intensity can effectively reduce the wall thickness of header and pipe joint, again can
Meet new material header to run safely and reliably under surpassing 700 DEG C of steam parameters.Material involved in the present invention has excellence
High-temperature behavior, processing performance.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention.
Fig. 2 is enlarged drawing at complete penetraction and fusion in welding type A of Fig. 1.
Fig. 3 is enlarged drawing at local through welding type A of Fig. 1.
Detailed description of the invention:
Embodiment 1:
A kind of header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units, mainly includes header body 1 and pipe joint 2 part, described
Pipe joint one end and header body use fillet weld seam, the described pipe joint other end and boiler heating surface small bore tube
Welding.
Embodiment 2:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1, described header cylinder uses
Alloy 740H large-caliber stainless steel pipe manufactures, and described heavy caliber is nominal diameter more than 100 millimeters, and described pipe joint is adopted
With alloy 740H small-bore stainless steel tube manufacture, described is small-bore for nominal diameter less than 100 millimeters.
Embodiment 3:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2, described welds types is complete
Through welding type or local through welding type.
Embodiment 4:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2 or 3, described alloy 740H
Metallographic structure is austenitic stainless steel, has excellent high mechanical property.
Embodiment 5:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2 or 3 or 4, described alloy
740H heavy caliber and the small-bore middle Cr content of alloy 740H are 23.5 ~ 25.5%, and Ni content is about 40 ~ 60%, and Co content is about
15 ~ 22%, remaining is ferrite.
Embodiment 6:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2 or 3 or 4 or 5, described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H are 23.5 %, and Ni content is about 40%, and Co content is about
15%, remaining is ferrite.
Embodiment 7:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2 or 3 or 4 or 5 or 6, described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H are 25.5%, and Ni content is about 60%, and Co content is about
22%, remaining is ferrite.
Embodiment 8:
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7, described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H be 24%, Ni content is about 50%, Co content be about
18.5%, remaining is ferrite.
Embodiment 9;
According to the header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units described in embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8,
Described 750 DEG C of allowable stresses of alloy 740H alloy are more than or equal to 84.1MPa.
Claims (9)
1. surpassing a header for 700 DEG C of advanced Boiler of Ultra-supercritical Units, mainly include header body and pipe joint part, it is special
Levy and be: described pipe joint one end uses fillet weld seam with header body, and the described pipe joint other end is heated with boiler
Face small bore tube welding.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 1, it is characterised in that: described
Header cylinder uses alloy 740H large-caliber stainless steel pipe to manufacture, and described heavy caliber is nominal diameter more than 100 millimeters, institute
The pipe joint stated uses alloy 740H small-bore stainless steel tube manufacture, and described is small-bore for nominal diameter less than 100 millimeters.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 1, it is characterised in that: described
Welds types is complete penetraction and fusion in welding type or local through welding type.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 2, it is characterised in that: described
Alloy 740H metallographic structure is austenitic stainless steel, has excellent high mechanical property.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 2, it is characterised in that: described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H are 23.5 ~ 25.5%, and Ni content is about 40 ~ 60%, and Co contains
Amount is about 15 ~ 22%, and remaining is ferrite.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 2, it is characterised in that: described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H are 23.5 %, and Ni content is about 40%, and Co content is about
15%, remaining is ferrite.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 2, it is characterised in that: described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H are 25.5%, and Ni content is about 60%, and Co content is about
22%, remaining is ferrite.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 2, it is characterised in that: described
Alloy 740H heavy caliber and the small-bore middle Cr content of alloy 740H are 24%, and Ni content is about 50%, and Co content is about
18.5%, remaining is ferrite.
The header surpassing 700 DEG C of advanced Boiler of Ultra-supercritical Units the most according to claim 2, it is characterised in that: described
750 DEG C of allowable stresses of alloy 740H alloy are more than or equal to 84.1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381269.8A CN106051726A (en) | 2016-06-01 | 2016-06-01 | Header of ultra 700 DEG C advanced ultra-supercritical unit boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381269.8A CN106051726A (en) | 2016-06-01 | 2016-06-01 | Header of ultra 700 DEG C advanced ultra-supercritical unit boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106051726A true CN106051726A (en) | 2016-10-26 |
Family
ID=57172960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610381269.8A Pending CN106051726A (en) | 2016-06-01 | 2016-06-01 | Header of ultra 700 DEG C advanced ultra-supercritical unit boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106051726A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066096A (en) * | 2015-08-05 | 2015-11-18 | 上海锅炉厂有限公司 | Header of ultra supercritical boiler unit at 700 DEG C |
| CN105066098A (en) * | 2015-08-05 | 2015-11-18 | 上海锅炉厂有限公司 | Header of 620-DEG C steam parameter ultra supercritical unit boiler |
-
2016
- 2016-06-01 CN CN201610381269.8A patent/CN106051726A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066096A (en) * | 2015-08-05 | 2015-11-18 | 上海锅炉厂有限公司 | Header of ultra supercritical boiler unit at 700 DEG C |
| CN105066098A (en) * | 2015-08-05 | 2015-11-18 | 上海锅炉厂有限公司 | Header of 620-DEG C steam parameter ultra supercritical unit boiler |
Non-Patent Citations (2)
| Title |
|---|
| 李阳等: "700℃A-USC电站锅炉材料专利分析与研究", 《材料导报》 * |
| 胡皓等: "700℃超超临界机组高温材料试验平台综述", 《中国电力 技术版》 * |
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Application publication date: 20161026 |
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