CN203231003U - Novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets - Google Patents
Novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets Download PDFInfo
- Publication number
- CN203231003U CN203231003U CN 201320194347 CN201320194347U CN203231003U CN 203231003 U CN203231003 U CN 203231003U CN 201320194347 CN201320194347 CN 201320194347 CN 201320194347 U CN201320194347 U CN 201320194347U CN 203231003 U CN203231003 U CN 203231003U
- Authority
- CN
- China
- Prior art keywords
- pipe
- mouth
- tee joint
- wall thickness
- ultra
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets and aims at solving the problem that existing tee pipe joint products cannot meet technical requirements of tee joints used by the steam pipelines of the 600 MW and 1000 MW ultra-supercritical generator sets. According to the novel hot-extrusion tee joint for the steam pipelines of the 600 MW and 1000 MW ultra-supercritical generator sets, a tee joint body is a reducing tee joint body, the reducing tee joint body is formed through hot extrusion of SA 335P92 alloy-steel tubes, the inside nominal diameter of the reducing tee joint body is 300*300*150 mm to 900*900*800 mm, and the wall thickness of the reducing tee joint body is 50-120 mm; the wall thickness of the main pipe connector opening portion of the tee joint body and the wall thickness of the bending shoulder portions of the tee joint are identical and 1.25-1.45 times the wall thickness of the branch pipe connecting opening portions of the tee joint. The novel hot-extrusion tee joint for the steam pipelines of the 600 MW and 1000 MW ultra-supercritical generator sets is simple in structure, low in energy consumption, material-saving, high in rate of finished products and long in service life. The novel hot-extrusion tee joint for the steam pipelines of the 600 MW and 1000 MW ultra-supercritical generator sets is applicable to the connection of steam pipelines of generator sets of 600 MW and 1000 MW and above of power plants and connections of other applicable pipelines.
Description
Technical field
The utility model belongs to a kind of tee pipe fitting for 600MW and 1000MW ultra supercritical generator set steam line in pipe joint (pipe fitting) technical field.
Background technique
The construction of and 1000MW ultra supercritical generator set overcritical along with power-generating industry 600MW and constantly development, to the generator set steam line the tee pipe fitting technical requirements electricity of supporting application more and more higher.In known technology, existing and threeway 1000MW ultra supercritical generator set such as main steam and reheaing steam pipe overcritical for supporting 600MW mainly is to be that raw material adopts technologies such as hot extrusion, welding to make by alloy seamless steel pipes such as SA335P11, SA335P22, SA335P91.Because 600MW and 1000MW ultra supercritical generator set steam line design pressure 27～28MPa, 608～610 ℃ of design temperatures and more than, but existing threeway is limit by its structure and material and processing technology, make tee pipe fitting and adopt the 10-12 mold, need heating for multiple times, power consumption is high, and threeway product thermal fatigue strength and the creep rupture strength at high temperatures of making are lower, can not be satisfied with the used threeway technical requirements of 660MW and 1000MW generator set steam line, and use is restricted.
Summary of the invention
Can not be satisfied with the problem of 660MW and the used threeway technical requirements of 1000MW generator set steam line in order to solve existing tee pipe fitting product structure.The purpose of the utility model provides a kind of simple structure, and it is low to consume energy, and saves material, the yield rate height, and long service life can be applicable to the novel hot extrusion reducing tee of the 600MW-1000MW of power plant and the technical requirements of above generator set connecting tube.
The technical scheme in the invention for solving the above technical problem is:
A kind of 600MW and 1000MW ultra supercritical generator set steam line are with novel hot extrusion threeway, it is provided with the threeway body, the threeway body is that the inside nominal diameter of SA335P92 alloy steel pipe hot extrusion is the reducing tee body of 300 * 300 * 150mm～900 * 900 * 800mm, wall thickness 50～120mm, and person in charge's joining part wall thickness of threeway body is identical with curved shoulder wall thickness also to be 1.25～1.45 times of branched pipe joining part wall thickness.
Above-mentioned 600MW and 1000MW ultra supercritical generator set steam line are with novel hot extrusion threeway, the person in charge of described threeway body and branched pipe butt joint groove be from mouth of pipe outer wall in the mouth of pipe behind oblique 50 °～60 ° angles, more in succession in the mouth of pipe 0 ° flat stretch the back, again in succession in the mouth of pipe oblique 60 °～75 ° angle to groove top margins be mouth of pipe mouth edge, the inclined to one side plush copper formula butt joint of slope, the rank that constitute shape groove.
Above-mentioned 600MW and 1000MW ultra supercritical generator set steam line are with novel hot extrusion threeway, the person in charge of described threeway body becomes on the basis of the inclined to one side plush copper formula butt joint of slope, rank shape groove in the mouth of pipe with branched pipe butt joint groove or from mouth of pipe outer wall, mouth of pipe madial wall is mouth of pipe mouth edge to oblique 10～15 ° of angles of mouth of pipe outer wall to groove top margin, becomes the inclined to one side plush copper formula butt joint of slope, rank shape groove inside and outside institute's mouth of pipe that constitutes in opposite directions.
The preparation process of the utility model reducing tee is: select 5 cover specialized moulds for use, take special three-way pressure facility gas-fired furnace, electric heat treating furnace, 2500T and 1000T oil hydraulic press; The temperature heated perimeter: 950 ℃-1050 ℃, warming velocity is not more than 200 ℃/h, and the every 25mm of holding time thickness is not less than 0.5hr, and pipe fitting should be avoided continuing carrying out shaping below 850 ℃; Heat treatment process: 1, normalizing temperature: 1040 ℃ of-1080 ℃ of warming velocitys are not more than 200 ℃/h holding time: every 1min/mm, and be no less than 0.5h; The type of cooling: shrend+oil quenching (adding an amount of AQ251 polymer water-soluble quenching liquid in the pond); 2, tempering temperature: 760 ℃ of-780 ℃ of warming velocitys are not more than 200 ℃/h holding time: every 2min/mm air cooling; Heat treatment installation is selected for use: electric heat treating furnace; Compensation way is selected: under external force, guide wire flows by predetermined technical requirements in mould; Technological process: material incoming test → neck material → sawing → sign → mould prepares → heat first to flatten surely, and circle → heating, vertical die horizontal die extrude → and finally matched moulds → person in charge is flush, arm perforate → add hot leg pipe to dash circle → heat treatment → metallographic, hardness test → put in storage with stove test specimen inspection → sign transplanting → line → groove processing → figuring of surface polishing → MT and UT inspection → finish turn inspection → paint → sign → packing → finished product.It thickens obviously, can reach the thickness of required enhancing, and the resultant metal metallographic structure is excellent, yield rate height, joint raw material, long product lifecycle.When the utility model uses, overcritical the same with tee pipe fitting with 1000MW ultra supercritical generator set steam line with existing 600MW, be connected and constitute pipeline between the tube and tube.
Because technique scheme has been adopted in the utility model design, has solved the problem that existing tee pipe fitting product structure can not be satisfied with 600MW and the used threeway technical requirements of 1000MW generator set steam line effectively.Also show that through testing result on trial for several times it compared with prior art has simple structure, it is low to consume energy, and saves material, the yield rate height, advantages such as long service life are applicable to the 600MW of power plant and 1000MW and above generator set steam line, and the connection of other suitable conduit.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the utility model embodiment's structure diagram.
Fig. 2 is that A partly is the enlarged view of the inclined to one side plush copper formula butt joint of slope, rank shape groove among Fig. 1.
Fig. 3 is that B partly is the enlarged view that the two sides becomes the inclined to one side plush copper formula butt joint of slope, rank shape groove embodiment in opposite directions among Fig. 1.
Label is in the accompanying drawing: 1 threeway body; C bends the shoulder wall thickness; D is responsible for the joining part wall thickness; E branched pipe joining part wall thickness.
Embodiment
Embodiment as shown in Figure 1, threeway body 1 of the present utility model is that SA335P92 alloy steel pipe material specification is that person in charge's external diameter 466mm, external diameter of pipe 402mm, the person in charge and the curved shouldered wall of φ 680 * 98 * 1060mmm hot extrusion is thick in 108mm, a thickness of pipe wall are the reducing tee body of 76mm, and person in charge's joining part wall thickness d of threeway body is identical with curved shoulder wall thickness c also to be 1.421 times of branched pipe joining part wall thickness e.
Referring to accompanying drawing 2 embodiments, the person in charge of the utility model threeway body 1 and branched pipe butt joint groove A be from mouth of pipe outer wall in the mouth of pipe behind oblique 55 ° of angles, more in succession in the mouth of pipe 0 ° flat stretch the back, again in succession in the mouth of pipe oblique 70 ° of angles to groove top margin be mouth of pipe mouth edge, the inclined to one side plush copper formula butt joint of slope, the rank that constitute shape groove.
3 embodiments with reference to the accompanying drawings, the person in charge of threeway body of the present utility model is to become on the basis of the inclined to one side plush copper formula butt joint of slope, rank shape groove in the mouth of pipe from mouth of pipe outer wall with branched pipe butt joint groove B, mouth of pipe madial wall is mouth of pipe mouth edge to the oblique 15 ° of angles of mouth of pipe outer wall to groove top margin, becomes the inclined to one side plush copper formula butt joint of slope, rank shape groove inside and outside institute's mouth of pipe that constitutes in opposite directions.
Claims (3)
1. a 600MW and 1000MW ultra supercritical generator set steam line are with novel hot extrusion threeway, it is provided with the threeway body, it is characterized in that, the threeway body is that the inside nominal diameter of SA335P92 alloy steel pipe hot extrusion is the reducing tee body of 300 * 300 * 150mm～900 * 900 * 800mm, wall thickness 50～120mm, and person in charge's joining part wall thickness (d) of threeway body is identical with curved shoulder wall thickness (c) also to be 1.25～1.45 times of branched pipe joining part wall thickness (e).
2. 600MW according to claim 1 and 1000MW ultra supercritical generator set steam line are with novel hot extrusion threeway, it is characterized in that, the person in charge of threeway body and branched pipe butt joint groove be from mouth of pipe outer wall in the mouth of pipe behind oblique 50 °～60 ° angles, more in succession in the mouth of pipe 0 ° flat stretch the back, again in succession in the mouth of pipe oblique 60 °～75 ° angle to groove top margins be mouth of pipe mouth edge, the inclined to one side plush copper formula butt joint of slope, the rank that constitute shape groove.
3. 600MW according to claim 2 and 1000MW ultra supercritical generator set steam line are with novel hot extrusion threeway, it is characterized in that, the person in charge of threeway body is to become on the basis of the inclined to one side plush copper formula butt joint of slope, rank shape groove in the mouth of pipe from mouth of pipe outer wall with branched pipe butt joint groove, mouth of pipe madial wall is mouth of pipe mouth edge to oblique 10～15 ° of angles of mouth of pipe outer wall to groove top margin, becomes the inclined to one side plush copper formula butt joint of slope, rank shape groove inside and outside institute's mouth of pipe that constitutes in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194347 CN203231003U (en) | 2013-04-18 | 2013-04-18 | Novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194347 CN203231003U (en) | 2013-04-18 | 2013-04-18 | Novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231003U true CN203231003U (en) | 2013-10-09 |
Family
ID=49287129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320194347 Expired - Fee Related CN203231003U (en) | 2013-04-18 | 2013-04-18 | Novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203231003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008095A1 (en) * | 2014-07-15 | 2016-01-21 | 杨顺伟 | Method for measuring wall thickness of large-diameter hot extruded three-way pipe |
-
2013
- 2013-04-18 CN CN 201320194347 patent/CN203231003U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008095A1 (en) * | 2014-07-15 | 2016-01-21 | 杨顺伟 | Method for measuring wall thickness of large-diameter hot extruded three-way pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102632182B (en) | Forging molding process for integral hollow nuclear power main pipe | |
| CN107755490A (en) | A kind of martensite steel 3D free bends building mortion and method | |
| CN203231003U (en) | Novel hot-extrusion tee joint for steam pipelines of 600 MW and 1000 MW ultra-supercritical generator sets | |
| CN103394881A (en) | Novel hot extrusion tee joint forming process | |
| CN201391746Y (en) | Ultra-high pressure air-heated gasifier | |
| CN102243029B (en) | Turbulence self-cleaning reduced pressure pipeline exchange water heater | |
| CN202546104U (en) | High-pressure thick-wall seamless elbow pipe manufactured in push way | |
| CN105642728B (en) | A kind of elastomeric material liquid is expanded into the device and method of shape composite bimetal pipe | |
| CN103160659A (en) | Clamp type compact on-line quenching system | |
| CN204338630U (en) | The induction heating type New Type Bending Pipe Unit of X90 grade of steel Φ 1422mm bend pipe | |
| CN202546102U (en) | High-pressure thick-wall heavy-calibre seamless hot-pressing elbow | |
| CN106583493B (en) | A kind of manufacturing method of large diameter steel pipe spigot-and-socket joint | |
| CN202546103U (en) | High-pressure thick-wall large-diameter single-seam bent pipe made through push method | |
| CN204564857U (en) | The system of clod wash electric power four large pipeline | |
| CN204171129U (en) | Electric arc furnaces cooling water pipe elbow-making device | |
| CN204564952U (en) | Dome head hot moulding attemperating unit | |
| CN203642747U (en) | Heat exchanger used for high-temperature high-pressure water circulating system | |
| CN201706118U (en) | Fluorine plastic lined manifold | |
| CN206723629U (en) | A kind of steel tube used in boiler | |
| CN204485837U (en) | A kind of polyurethane reaction device | |
| CN202327474U (en) | Reducing elbow | |
| CN103011572A (en) | Heat collecting pipe sealing device and vacuum heat collecting pipe employing same | |
| CN211938879U (en) | Six-way pipe fitting forming die | |
| CN210003948U (en) | large-scale high strength reducing pipe forging for utility boiler | |
| CN202812614U (en) | Bend for rapid connection of different pipes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20180418 |