CN209165367U - Cylinder cone cylinder integration forging on steam generator - Google Patents

Abstract

The utility model discloses cylinder cone cylinder integration forging, forging bodies on a kind of steam generator to be made of cylinder and conic tube；Cylinder includes convex platform bobbin and main bobbin, and suitable for reading in convex platform bobbin is provided with bobbin sample interception section suitable for reading and bobbin amputation section suitable for reading；Conic tube includes cone cylinder pipe and lower convex platform bobbin, and the lower mouth of lower convex platform bobbin is provided with mouth under oral examination material under bobbin intercepts section and bobbin and amputates section；The ratio between the height h2 of the height h1 of cylinder and conic tube h1/h2=1.25-1.35；The height h of the cylinder₁=(1.06-1.10) h₀₁；The height h of conic tube₂=(1.08-1.12) h₀₂.The integration forging not only has uniform metal microstructure and mechanical property, but also has the pre- allowance of reasonable sample and chipping allowance.

Description

Cylinder cone cylinder integration forging on steam generator

Technical field

The utility model relates to a kind of nuclear power nuclear island steam generator large-sized structural parts more particularly to steam generator columns The solid forging of shape upper shell and conical shell composite structure.

Background technique

Steam generator is one of four big components of pressurized-water reactor nuclear power plant, is the most key capital equipment of nuclear power station.It steams Vapour generator is connected with reactor pressure vessel, is the maximum component of pressure-bearing, plays the work of sealing and isolation one, secondary circuit cooling With and primary Ioops side coolant flow through tube bank front and back collect chamber, it not only directly affects the power and efficiency of nuclear power station, And when carrying out heat exchange, also plays a part of obstructing radioactivity catalyst carrier, nuclear plant safety be played vital Effect.

Steam generator shell is mainly made of upper and lower end socket and cylinder, and upper and lower end socket is located at the two of cylinder End；Steam generator cylinder and upper and lower end socket belong to large thick-wall shape Forging, and steam generator cylinder is even more to belong to greatly Volume, big cross section, complex-curved ultra-large thick-wall shape Forging.Therefore, the manufacturer of the cylinder of existing steam generator shell Method is to forge the forging unit such as upper shell, conic tube and lower shell in advance, then again welds upper shell and lower shell respectively It is connected to the both ends of conic tube and constitutes steam generator cylinder.This side that the splicing manufacture of multiple-unit cylinder is carried out by welding Method is clearly present many deficiencies: complete metal streamline cannot be always formed by the structure of welding splicing first, due to core Electric steam generator is chronically in the severe running environment of high temperature and pressure, and receiving alternate load and pipeline vortex are formed by Pressure jump easily causes the not uniform stress of stress distribution to be concentrated, is easy to produce fatigue, creep and damage.And it welds in this way The method of manufacture, complex process, welding interval are long, and complex stress area quality stability is poor, and it is low to directly contribute yield rate, manufacture at This height.Furthermore for the quality for guaranteeing nuclear leve forging, it is necessary to the metallic microscopic group of various processes in nuclear leve forging production process It knits and carries out whole monitoring and evaluation with mechanical property, it is therefore necessary to enough samples is reserved with to the rational position in forging and tried Sample guarantees that sample test has and represents to accurately reflect the internal soundness of forging, the uniformity coefficient of chemical composition and mechanical property Property, accuracy；It must also consider that there is the cost that rationally keeps sample simultaneously.Since conical shell forging process for fuel material performance requirement is high, material Material has the characteristics that valence of fine quality is high, and in finished product machining process, excessive chipping allowance will cause largely cuts conical shell forging Metal waste is cut, therefore the unreasonable pre- allowance of sample and finishing chipping allowance not only cause the wave of high-performance high cost metal Take, and also increases processing and fabricating cost.

Utility model content

For above shortcomings described in the prior art, the technical problem to be solved by the utility model is to provide one kind Cylinder cone cylinder integration forging on steam generator not only makes the composite structure of cylindricality upper shell and conical shell have uniformly gold Belong to microscopic structure and mechanical property, and there is the pre- allowance of reasonable sample and chipping allowance, to ensure that forging is safe and reliable Property on the basis of, have good economy.

In order to solve the above-mentioned technical problem, cylinder cone cylinder integration forging on the steam generator of the utility model, including forging Part ontology, the forging body are made of cylinder and conic tube, and conic tube is set to the lower end of cylinder；The cylinder packet Convex platform bobbin and main bobbin are included, suitable for reading in convex platform bobbin is provided with bobbin sample interception section suitable for reading and suitable for reading section of bobbin Except section；The conic tube includes cone cylinder pipe and lower convex platform bobbin, and the lower mouth of lower convex platform bobbin is provided with oral examination material under bobbin It intercepts mouth under section and bobbin and amputates section；Bobbin amputation section suitable for reading, bobbin sample suitable for reading intercept section, convex platform bobbin, main cylinder Successively to be forged to one from top to bottom whole for mouth amputation section under oral examination material interception section and bobbin under pipe, cone cylinder pipe, lower convex platform bobbin, bobbin Body；The ratio between the height h2 of the height h1 of the cylinder and conic tube h1/h2=1.25-1.35；The forging body it is corresponding at The height of the finished product cylinder of product cylinder is h01, and the internal diameter of the finished product cylinder is 2R1, the corresponding finished product cylinder of forging body Finished product conic tube height be h₀₂, the lower internal diameter of the finished product conic tube is 2R₂, the height h of the cylinder₁=(1.06- 1.10) h₀₁；The height h of conic tube₂=(1.08-1.12) h₀₂, the internal diameter of cylinder is 2R₁₂, the outer diameter of convex platform bobbin is 2R₁₃, the outer diameter of main bobbin is 2R₁₁, R₁₁=(1.03-1.05) R₁, R₁₂=(0.95-0.97) R₁, R₁₃=(1.15-1.16) R₁；Institute The internal diameter for stating lower convex platform bobbin is 2R₂₁, the outer diameter of the lower convex platform bobbin is 2R₂₂, R₂₁=(0.95-0.97) R₂, R₂₂=(1.15- 1.16) R₂。

In said structure, since cylinder and conic tube forging are integral, and the height h of cylinder₁With conic tube Height h₂The ratio between h₁/h₂=1.25-1.35 forms the integral structure of steam generator upper shell and conic tube, this is not only The weld seam between cylinder and frustum cylinder is completely avoided, and meets structural requirement and the use of steam generator cylinder Performance；The overall structure makes the metal structure uniformity of forging, and metal streamline is smooth coherent, ensure that steam generator cylinder Mechanics performance is greatly improved, and the high temperature and pressure and time dependent loading and vapor vortex that can more bear steam generator are formed by Bad working environments are conducive to the raising of the homogenization and safety in operation of steam generator cylinder working stress；And solid forging Not only metal structure has further been refined, but also has been conducive to the accurate forming of steam generator cylinder.Again due at the both ends of forging body It is provided with sample interception section and amputation section, amputation section is added on the outside of sample interception section, forging both ends surface layer can be amputated, To guarantee that sample interception section can accurately reflect the material property and institutional framework of steam generator cylinder forgings, due to whole forging The steam generator cylinder made is in overlength, super large forging structure, and both ends setting sample intercepts Duan Gengneng and all-sidedly and accurately reflects forging Part inner materials and institutional framework, the sample sample section at both ends not only accurately reflect steam generator cylinder forgings along cylinder circumferential direction Internal soundness, and enough pre- allowances can be used in cylinder produce overall process multiple sample detection, so as to standard Really reflect cylinder forgings in the chemical component, microscopic structure and mechanical property of each technical process, to guarantee forging quality It is perfectly safe reliable.Due also between cylinder internal diameter and outer diameter and between conic tube inside and outside wall, its opposite finished product cylinder is equal There are reasonable final shaping unit allowances for finish, this not only ensure that finished product cylinder product shape size and suface processing quality, and And there is cutting output the most reasonable and minimum flow to reduce a large amount of metals for high-performance large-scale forging as cylinder Waste, effectively reduces processing and fabricating cost.

Preferred embodiments of the present invention, the convex platform bobbin, main bobbin and the rounded cylinder of lower convex platform bobbin Pipe structure, the cone cylinder pipe are in rotary table bobbin structure.In the convex platform bobbin, main bobbin, cone cylinder pipe and lower convex platform bobbin Heart line is on same straight line.The structure advantageously ensures that the accurate of the geomery of finished product evaporator tube, and is convenient for finished product Production processing.

Preferred embodiments of the present invention, rotary table cone angle=8 ° -12 ° of the cone cylinder pipe.It is structurally reasonable, pressure-bearing Performance is good.

Preferred embodiments of the present invention, the convex platform bobbin height are h₁₂, the height h of main bobbin₁₁, h₁₁= h₁₂.It is h that the bobbin sample suitable for reading, which intercepts section and the total height of bobbin amputation section suitable for reading,₁₃, bobbin it is suitable for reading amputation section height be h₁₄, h₁₃=(0.10-0.15) h₁₂, h₁₄=0.04 h₁₂.The structure guarantee the reasonable forging surface layer amputation amount of cylinder portion and Enough sample sample length.

Preferred embodiments of the present invention, the height of the cone cylinder pipe are h₂₁, the height of lower convex platform bobbin is h₂₂, h₂₁= h₂₂.The total height that oral examination material intercepts mouth amputation section under section and bobbin under the bobbin is h₂₃, the height of mouth amputation section under bobbin Degree is h₂₄, h₂₃=(0.15-0.20) h₂₂, h₂₄=0.05 h₂₂。

Preferred embodiments of the present invention, the bobbin sample suitable for reading intercept oral examination material under section and bobbin and intercept Duan Jun It can cut and be divided into two sections of sample sections.Multistage sample section more can accurately reflect the inner materials and institutional framework of cylinder forgings.

Preferred embodiments of the present invention, the forging body integrally change knot by carbon manganese low-alloy steel solid forging Structure.It can satisfy the requirement and performance requirement of nuclear island forging products.

Detailed description of the invention

Cylinder cone cylinder integration forging on the utility model steam generator is made with reference to the accompanying drawings and detailed description It further illustrates.

Fig. 1 is the schematic diagram of the section structure of cylinder cone cylinder integrated finished cylinder on steam generator；

Fig. 2 is a kind of structural representation of specific embodiment of cylinder cone cylinder integration forging on the utility model steam generator Figure.

In figure: 1-convex platform bobbin, 2-main bobbins, 3-finished product cylinders, 4-cone cylinder pipes, 5-lower convex platform bobbins, 6- Oral examination material interception section under bobbin, mouth amputation section, 8-bobbins sample interception section suitable for reading under 7-bobbins, 9-bobbins amputation section suitable for reading, 10-convex platforms, 11-lower convex platforms.

Specific embodiment

Cylinder cone cylinder integrated finished cylinder on steam generator as shown in Figure 1, the top of the finished product cylinder 3 are circular cylinder Tubulose even forges the cone in rotary table tubular in the lower part of circular cylinder tubular structure.In the round bobbin of finished product cylinder 3 Upper outside position be provided with the installation base of evaporator attachment, be similarly provided with steaming on the outside of the lower mouth end of cone Send out device attachment installation base.The total high h of the cylinder of the finished product cylinder 3₀=3250 ㎜, cylinder wall thickness b=65 ㎜, the internal diameter of round bobbin 2R₁=3100 ㎜, the lower internal diameter 2R of frustum cylinder₂=2600 ㎜, the height h of round bobbin₀₁=1850 ㎜, the height of frustum cylinder Spend h₀₂=1400㎜.Finished product cylinder forms integral structure by solid forging by carbon manganese low-alloy steel.

Cylinder cone cylinder integration forging on the steam generator of the utility model as shown in Figure 2, forging body is by mutually forging The cylinder and conic tube being integral are constituted, and cylinder is rounded bobbin structure, and the main structure of conic tube is a rotary table Bobbin structure, upward, large diameter end is end suitable for reading, which is connected with the lower mouth end of cylinder at the major diameter mouth end of rotary table bobbin It is connected.The total height of forging body is h, and total height h includes the sample interception section and amputation at cylinder and conic tube and both ends Section height and.

Cylinder includes convex platform bobbin 1 and main bobbin 2, and the inner cylinder wall surface of convex platform bobbin 1 and main bobbin 2 is in same On cylindrical surface, the internal diameter 2R of the tube₁₂=2975㎜.It is convex due to being provided with an installation on the outside of the round bobbin of finished product cylinder Platform, so the outer cylinder diameter of the convex platform bobbin 1 of forging body is greater than the outer cylinder diameter of main bobbin 2, therefore convex platform cylinder Pipeline section outer diameter 2R₁₃=3580 ㎜, main bobbin outer diameter 2R₁₁=3225㎜.Suitable for reading in convex platform bobbin 1 is provided with oral examination on bobbin Material interception section 8 is additionally provided with bobbin amputation section 9 suitable for reading in the upside of bobbin sample interception section 8 suitable for reading, when sample is tested in interception, First amputate the bobbin amputation section 9 suitable for reading of its outer skin, then intercept and keep sample the sample interception section.Total a height of h of tube₁, Total high h₁For the height h of main bobbin 2₁₁With the height h of convex platform bobbin 1₁₂The sum of.Total high h of tube₁=2000 ㎜, main cylinder The height h of pipe 2₁₁=1000 ㎜, the height h of convex platform bobbin 1₁₂=1000㎜.The height of convex platform bobbin 1 includes that bobbin is suitable for reading Sample intercepts the height of section 8 and bobbin amputation section 9 suitable for reading, the height h of middle bobbin amputation section 9 suitable for reading₁₄=40 ㎜, bobbin are suitable for reading Sample intercepts the height and h of section 8 and bobbin amputation section 9 suitable for reading₁₃=138㎜.Bobbin sample interception section 8 suitable for reading, which can be cut, to be divided into Two sections of sample sections, and form sample one and sample two.

Conic tube includes cone cylinder pipe 4 and lower convex platform bobbin 5, the bobbin structure in a circular table shape of cone cylinder pipe 4, under cone cylinder pipe 4 Mouth end is connected with lower convex platform bobbin 5, and the lower mouth end of cone cylinder pipe 4 is small-caliber end.It is set on the outside of the lower convex platform bobbin of finished product cylinder It is equipped with an installation base, so the wall thickness of the lower convex platform bobbin 5 of forging thickens, the lower mouth of lower convex platform bobbin 5 is provided with bobbin Mouth amputates section 7 under lower oral examination material interception section 6 and bobbin.It is the interior bore of the coupled main bobbin 2 in the end suitable for reading of cone cylinder pipe 4, outer Caliber size is corresponding, and then the interior bore of coupled lower convex platform bobbin 5, outside diameter size are corresponding at the lower mouth end of cone cylinder pipe 4.Cone Circular cone corner of table α=10 ° of bobbin 4, the rotary table cone angle are the inner wall bus of cone cylinder pipe 4 and the angle of rotary table centreline space, the circle Platform cone angle is preferably between 8 ° -12 °.The internal diameter 2R of lower convex platform bobbin 5₂₁=2500 ㎜, the outer diameter 2R of lower convex platform bobbin 5₂₂= 3000㎜.Total high h of frustum cylinder₂, total high h₂For 4 height h of cone cylinder pipe₂₁With 5 height h of lower convex platform bobbin₂₂Height and, h= 1540 ㎜, the ㎜ of height h=770 of cone cylinder pipe 4, lower convex platform bobbin 5h₂₂=770 ㎜, 5 height of lower convex platform bobbin include oral examination under bobbin Mouth amputates the height of section 7 under material interception section 6 and bobbin, the height h of mouth amputation section 7 under middle bobbin₂₄=38.5 ㎜, mouth under bobbin Sample intercepts total high h of mouth amputation section 7 under section 6 and bobbin₂₃=130 ㎜, oral examination material interception section 6, which can be cut, under the bobbin is divided into examination Expect section, and forms the sample one and sample two of lower mouth.

Above-mentioned bobbin amputation section 9 suitable for reading, bobbin sample interception section 8 suitable for reading, convex platform bobbin 1, main bobbin 2, cone cylinder pipe 4, Successively forging is integral mouth amputation section 7 from top to bottom under oral examination material interception 6 bobbin of section under lower convex platform bobbin 5, bobbin.

A kind of above-mentioned preferred embodiment for only having enumerated the utility model, but the utility model is not limited thereto, Without prejudice to the utility model basic principle in the case where, can also carry out within the scope of the following preferably and form new embodiment party Formula.Its preferred scope are as follows: the height h1 of the cylinder and height h of conic tube₂The ratio between h₁/h₂=1.25-1.35；The height of cylinder h₁=(1.06-1.10) h₀₁；The height h of conic tube₂=(1.08-1.12) h₀₂, R₁₁=(1.03-1.05) R₁, R₁₂=(0.95- 0.97) R₁, R₁₃=(1.15-1.16) R₁； R₂₁=(0.95-0.97) R₂, R₂₂=(1.15-1.16) R₂；h₁₃=(0.10- 0.15) h₁₂, h₁₄=0.04 h₁₂；h₂₃=(0.15-0.20) h₂₂。

Claims (10)

1. cylinder cone cylinder integration forging on a kind of steam generator, including forging body, it is characterised in that: the forging body by Cylinder and conic tube are constituted, and conic tube is set to the lower end of cylinder；The cylinder includes convex platform bobbin (1) and master Bobbin (2), suitable for reading in convex platform bobbin (1) are provided with bobbin sample interception section (8) suitable for reading and bobbin amputation section (9) suitable for reading； The conic tube includes cone cylinder pipe (4) and lower convex platform bobbin (5), and the lower mouth of lower convex platform bobbin (5) is provided with mouth under bobbin Sample intercepts mouth amputation section (7) under section (6) and bobbin；Bobbin amputation section (9) suitable for reading, bobbin sample interception section (8) suitable for reading, Under convex platform bobbin (1), main bobbin (2), cone cylinder pipe (4), lower convex platform bobbin (5), bobbin under oral examination material interception section (6) and bobbin Successively forging is integral from top to bottom for mouth amputation section (7)；The height h of the cylinder₁With the height h of conic tube₂The ratio between h₁/ h₂=1.25-1.35；The height of the finished product cylinder of the corresponding finished product cylinder (3) of the forging body is h₀₁, the finished product cylinder Internal diameter be 2R₁, the height of the finished product conic tube of the corresponding finished product cylinder (3) of forging body is h₀₂, under the finished product conic tube Mouth internal diameter is 2R₂, the height h of the cylinder₁=(1.06-1.10) h₀₁；The height h of conic tube₂=(1.08-1.12) h₀₂, circle The internal diameter of cylinder is 2R₁₂, the outer diameter of convex platform bobbin (1) is 2R₁₃, the outer diameter of main bobbin (2) is 2R₁₁, R₁₁=(1.03-1.05) R₁, R₁₂=(0.95-0.97) R₁, R₁₃=(1.15-1.16) R₁；The internal diameter of the lower convex platform bobbin (5) is 2R₂₁, the lower convex platform cylinder The outer diameter for managing (5) is 2R₂₂, R₂₁=(0.95-0.97) R₂, R₂₂=(1.15-1.16) R₂。

2. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the convex platform cylinder (1), main bobbin (2) and the rounded bobbin structure of lower convex platform bobbin (5) are managed, the cone cylinder pipe (4) is in rotary table bobbin structure.

3. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the convex platform cylinder The centerline of (1), main bobbin (2), cone cylinder pipe (4) and lower convex platform bobbin (5) is managed on same straight line.

4. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the cone cylinder pipe (4) rotary table cone angle=8 ° -12 °.

5. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the convex platform cylinder Managing (1) is highly h₁₂, the height h of main bobbin (2)₁₁, h₁₁= h₁₂。

6. cylinder cone cylinder integration forging on steam generator according to claim 1 or 5, it is characterised in that: the bobbin The total height of sample interception section (8) suitable for reading and bobbin amputation section (9) suitable for reading is h₁₃, bobbin it is suitable for reading amputation section (9) height be h₁₄, h₁₃=(0.10-0.15) h₁₂, h₁₄=0.04 h₁₂。

7. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the cone cylinder pipe (4) height is h₂₁, the height of lower convex platform bobbin (5) is h₂₂, h₂₁= h₂₂。

8. cylinder cone cylinder integration forging on steam generator according to claim 1 or claim 7, it is characterised in that: the bobbin The total height of mouth amputation section (7) is h under lower oral examination material interception section (6) and bobbin₂₃, the height of mouth amputation section (7) is under bobbin h₂₄, h₂₃=(0.15-0.20) h₂₂, h₂₄=0.05 h₂₂。

9. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the bobbin is suitable for reading Oral examination material interception section (6), which can be cut, under sample interception section (8) and bobbin is divided into two sections of sample sections.

10. cylinder cone cylinder integration forging on steam generator according to claim 1, it is characterised in that: the forging sheet Body integrally changes structure by carbon manganese low-alloy steel solid forging.