CN111237570A - Reinforced pipe structure of spherical boiler head manhole and manufacturing method thereof - Google Patents
Reinforced pipe structure of spherical boiler head manhole and manufacturing method thereof Download PDFInfo
- Publication number
- CN111237570A CN111237570A CN202010027404.5A CN202010027404A CN111237570A CN 111237570 A CN111237570 A CN 111237570A CN 202010027404 A CN202010027404 A CN 202010027404A CN 111237570 A CN111237570 A CN 111237570A
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- China
- Prior art keywords
- reinforcing pipe
- manhole
- spherical
- end socket
- pipe structure
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Classifications
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- 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
- F16L41/084—Soldered joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- F22B37/221—Covers for drums, collectors, manholes or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A manhole reinforcing pipe structure of a spherical end socket of a boiler barrel and a manufacturing method thereof relate to a manhole reinforcing structure of a spherical end socket of a boiler barrel. The invention aims to solve the problems that the existing drum spherical head manhole reinforcing plate structure has the defects of head manhole sealing surface sunken weakening strength, stress concentration, large wall thickness allowance, low utilization rate of steel plate materials, more fusion welding metal consumption, large welding workload and unavailable use of stockpiled large-diameter thick-wall seamless steel pipes. The invention belongs to the technical field of design and manufacture of a spherical head manhole reinforcing pipe structure of pressure-bearing equipment such as boilers, pressure vessels, nuclear power equipment and the like.
Description
Technical Field
The invention relates to a manhole reinforcing structure of a spherical end socket of a boiler drum, belonging to the technical field of design and manufacture of manhole reinforcing structures of spherical end sockets of pressure-bearing equipment such as boilers, pressure vessels, nuclear power equipment and the like.
Background
For a long time, various small-capacity boiler drum spherical head manholes manufactured in large quantities in China are reinforced mostly by adopting a welding and placing type reinforcing plate structure, and the sealing surface of the manhole cover is arranged on the inner surface … of the spherical head. The problems that the sealing surface of the end socket manhole is sunken and weakened in strength, concentrated in stress, large in wall thickness allowance, low in utilization rate of steel plate materials, large in consumption of fusion welding metal, large in welding workload, large-caliber thick-wall seamless steel pipes accumulated in storage cannot be utilized and the like exist, so that the design and the manufacturing method of the reinforcing structure of the spherical end socket manhole are single, old and backward, and poor in economic benefit.
Disclosure of Invention
The invention aims to solve the problems that the existing drum spherical head manhole reinforcing plate structure has the defects of sunken sealing surface weakening strength, stress concentration, large wall thickness allowance, low utilization rate of steel plate materials, more fusion welding metal consumption, large welding workload and unavailable use of stockpiled large-diameter thick-wall seamless steel pipes, and further provides a drum spherical head manhole reinforcing plate structure and a manufacturing method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: the reinforcing pipe structure comprises a spherical end socket and an inserted reinforcing pipe, wherein the inserted reinforcing pipe is connected with the spherical end socket through a D-type welding seam.
Furthermore, the outer wall of the inserted reinforcing pipe is provided with an outer wall surfacing layer.
Furthermore, the inner wall of the inserted reinforcing pipe is provided with an inner wall surfacing layer.
Furthermore, a manhole cover sealing surface is arranged on the end surface of the inner end of the plug-in reinforcing pipe.
Furthermore, a manhole cover pressing plate plane is arranged on the end face of the outer end of the plug-in type reinforcing pipe.
Furthermore, the inserted reinforcing pipe is made of a seamless steel pipe.
The manufacturing method of the reinforced pipe structure comprises the following specific steps:
step one, carrying out hot press forming on a spherical end socket, and carrying out gas cutting on a manhole groove on the spherical end socket;
step two, blanking the inserted reinforcing pipe, overlaying an inner wall overlaying layer on the inner wall of the inserted reinforcing pipe, and turning the outer wall of the inserted reinforcing pipe;
thirdly, welding a welding seam between the spherical seal head and the inserted reinforcing pipe on the platform;
and step four, carrying out secondary turning on the inserted reinforcing pipe.
The invention has the beneficial effects that: the invention improves the production efficiency, the economic benefit, the product quality and the manufacturing technology level; the invention makes full use of the stocked large-caliber thick-wall seamless steel pipe, obviously improves the economic benefit, the production efficiency and the design and manufacturing technical level, and innovatively optimizes the steel pipe; the invention has optimized design structure and simple and convenient manufacturing process, reduces the consumption of fusion welding metal, reduces the welding workload, and avoids the problems that the manhole sealing surface is sunken to weaken the strength of the end socket steel plate, the stress is concentrated and the wall thickness allowance is large; aiming at the problems in the prior art, the reinforcing structure of the spherical seal head manhole reinforcing plate is innovated into a reinforcing structure of a spherical seal head manhole reinforcing pipe, an arrangement structure of the spherical seal head manhole reinforcing plate is innovated into a plug-in structure of the spherical seal head manhole reinforcing pipe, the welding seam of the spherical seal head manhole reinforcing plate is innovated into welding seam platform welding of the spherical seal head manhole reinforcing pipe, and the like; the stocked large-caliber thick-wall seamless steel pipe is fully utilized, and the economic benefit, the production efficiency, the design and manufacturing technical level are obviously improved, innovated and optimized; the invention thoroughly solves the problems of single, old and backward design structure and manufacturing method of drum spherical head manhole reinforcement, and poor production efficiency and economic benefit; novel, practical, advanced and reliable.
Drawings
FIG. 1 is a schematic view of a reinforcing tube structure according to the present invention;
FIG. 2 is a schematic structural view of a manhole cover pressing plate of the reinforced pipe structure of the present invention when the plane does not extend into the reinforced pipe;
FIG. 3 is a schematic view of a reinforcing plate structure of a spherical head manhole of a boiler drum in the prior art;
figure 4 shows a reinforced pipe structure of a spherical end socket manhole.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 and fig. 2, and the structure of the reinforcing pipe for the manhole of the drum spherical head comprises a spherical head 1 and an insertion-type reinforcing pipe 4, and the insertion-type reinforcing pipe 4 is connected with the spherical head 1 through a D-type weld 2.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 1 and 2, and an outer wall weld overlay 3 is provided on the outer wall of the plug-in type reinforcing pipe 4 of the drum spherical head manhole reinforcing pipe structure according to the present embodiment.
The thickness of the insert reinforcing tube 4 in this embodiment can be increased by the outer wall build-up welding layer 3.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1 and 2, and an inner wall weld overlay 5 is provided on the inner wall of the plug-in type reinforcing pipe 4 of the drum spherical head manhole reinforcing pipe structure according to the present embodiment.
The thickness of the insert reinforcing tube 4 in this embodiment can be increased by the inner wall build-up welding layer 5.
Other components and connections are the same as those in the first embodiment.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 1 and 2, and a manhole cover sealing surface 7 is provided on an inner end surface of the insertion type reinforcing pipe 4 of the drum spherical head manhole reinforcing pipe structure according to the present embodiment. Other components and connections are the same as those in the first embodiment.
The fifth concrete implementation mode: referring to fig. 1, the present embodiment will be described, and a manhole cover pressing plate plane 6 is provided on an outer end surface of an insertion type reinforcing pipe 4 of a drum spherical head manhole reinforcing pipe structure according to the present embodiment. Other components and connections are the same as those in the first embodiment.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 and 2, and the insertion-type reinforcing pipe 4 of the drum spherical head manhole reinforcing pipe structure according to the present embodiment is made of a seamless steel pipe. Other components and connections are the same as those in the first embodiment.
The seventh embodiment: the embodiment is described with reference to fig. 1 and 2, and the method for manufacturing the drum spherical head manhole reinforcing pipe structure in the embodiment specifically includes the following steps:
step one, carrying out hot press forming on a spherical end socket 1, and carrying out gas cutting on a manhole groove on the spherical end socket 1;
step two, blanking the inserted reinforcing pipe 4, overlaying an inner wall overlaying layer 5 on the inner wall of the inserted reinforcing pipe 4, and turning the outer wall of the inserted reinforcing pipe 4;
thirdly, welding a welding seam between the spherical seal head 1 and the inserted reinforcing pipe 4 on the platform;
and step four, carrying out secondary turning on the inserted reinforcing pipe 4.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. Spherical head manhole reinforcement pipe structure of a boiler section of thick bamboo, its characterized in that: the manhole reinforcing pipe structure of the spherical boiler shell end socket comprises a spherical end socket (1) and an insertion type reinforcing pipe (4), wherein the insertion type reinforcing pipe (4) is connected with the spherical end socket (1) through a D-type welding seam (2).
2. The drum spherical head manhole reinforcing pipe structure as claimed in claim 1, wherein: the outer wall of the inserted reinforcing pipe (4) is provided with an outer wall surfacing layer (3).
3. The drum spherical head manhole reinforcing pipe structure as claimed in claim 1, wherein: the inner wall of the inserted reinforcing pipe (4) is provided with an inner wall surfacing layer (5).
4. The drum spherical head manhole reinforcing pipe structure as claimed in claim 1, wherein: the inner end face of the plug-in type reinforcing pipe (4) is provided with a manhole cover sealing surface (7).
5. The drum spherical head manhole reinforcing pipe structure as claimed in claim 1, wherein: the outer end face of the inserted reinforcing pipe (4) is provided with a manhole cover pressing plate plane (6).
6. The drum spherical head manhole reinforcing pipe structure as claimed in claim 1, wherein: the inserted reinforcing pipe (4) is made of a seamless steel pipe.
7. The manufacturing method of the manhole reinforcing pipe structure of the spherical boiler shell end socket is characterized in that: the manufacturing method of the drum spherical end socket manhole reinforcing pipe structure comprises the following specific steps:
step one, carrying out hot press forming on a spherical end socket (1), and carrying out gas cutting on a manhole groove on the spherical end socket (1);
step two, blanking the inserted reinforcing pipe (4), overlaying an inner wall overlaying layer (5) on the inner wall of the inserted reinforcing pipe (4), and turning the outer wall of the inserted reinforcing pipe (4);
thirdly, welding joints of the welding ball-shaped seal heads (1) and the inserted reinforcing pipes (4) are arranged on the platform;
and step four, carrying out secondary turning on the inserted reinforcing pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010027404.5A CN111237570A (en) | 2020-01-10 | 2020-01-10 | Reinforced pipe structure of spherical boiler head manhole and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010027404.5A CN111237570A (en) | 2020-01-10 | 2020-01-10 | Reinforced pipe structure of spherical boiler head manhole and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN111237570A true CN111237570A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010027404.5A Pending CN111237570A (en) | 2020-01-10 | 2020-01-10 | Reinforced pipe structure of spherical boiler head manhole and manufacturing method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026130A (en) * | 1959-06-22 | 1962-03-20 | Charles P Morrell | Boiler spuds and the like and methods of attaching same |
| CN102338684A (en) * | 2011-09-26 | 2012-02-01 | 张家港化工机械股份有限公司 | Connecting structure for pressure test of pressure test sealing head and nozzle of surfacing reinforcing pipe |
| CN106112225A (en) * | 2016-08-02 | 2016-11-16 | 中国石油大学(华东) | A kind of Nozzle Zone of Vessels reducing welding residual stress and end socket method of attachment |
| CN206246899U (en) * | 2016-12-13 | 2017-06-13 | 中国海洋石油总公司 | Pressure vessel heavy wall reinforcement adapter and pressure vessel |
| CN206299785U (en) * | 2016-11-24 | 2017-07-04 | 中国石化工程建设有限公司 | A kind of radial direction manhole for lower vessel portion |
| CN107975642A (en) * | 2017-12-28 | 2018-05-01 | 哈尔滨锅炉厂有限责任公司 | Boiler and the adapter of pressure container cylinder emplacement type heavy caliber thick wall and connection method |
| CN109519541A (en) * | 2018-12-10 | 2019-03-26 | 航天晨光股份有限公司 | A kind of internal high-voltage manhole device and its open and close operating method |
-
2020
- 2020-01-10 CN CN202010027404.5A patent/CN111237570A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026130A (en) * | 1959-06-22 | 1962-03-20 | Charles P Morrell | Boiler spuds and the like and methods of attaching same |
| CN102338684A (en) * | 2011-09-26 | 2012-02-01 | 张家港化工机械股份有限公司 | Connecting structure for pressure test of pressure test sealing head and nozzle of surfacing reinforcing pipe |
| CN106112225A (en) * | 2016-08-02 | 2016-11-16 | 中国石油大学(华东) | A kind of Nozzle Zone of Vessels reducing welding residual stress and end socket method of attachment |
| CN206299785U (en) * | 2016-11-24 | 2017-07-04 | 中国石化工程建设有限公司 | A kind of radial direction manhole for lower vessel portion |
| CN206246899U (en) * | 2016-12-13 | 2017-06-13 | 中国海洋石油总公司 | Pressure vessel heavy wall reinforcement adapter and pressure vessel |
| CN107975642A (en) * | 2017-12-28 | 2018-05-01 | 哈尔滨锅炉厂有限责任公司 | Boiler and the adapter of pressure container cylinder emplacement type heavy caliber thick wall and connection method |
| CN109519541A (en) * | 2018-12-10 | 2019-03-26 | 航天晨光股份有限公司 | A kind of internal high-voltage manhole device and its open and close operating method |
Non-Patent Citations (2)
| Title |
|---|
| 丁伯民: "《钢制压力容器 设计、制造和检验》", 30 June 1992, 华东化工学院出版社 * |
| 上海市安全生产科学研究所: "《金属焊接与热切割作业人员安全技术》", 30 June 2017 * |
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