CN108538412A - The valve housing and its processing method of nuclear power plant reactor cooling system - Google Patents
The valve housing and its processing method of nuclear power plant reactor cooling system Download PDFInfo
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- CN108538412A CN108538412A CN201810446772.6A CN201810446772A CN108538412A CN 108538412 A CN108538412 A CN 108538412A CN 201810446772 A CN201810446772 A CN 201810446772A CN 108538412 A CN108538412 A CN 108538412A
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- face
- tube body
- circular conical
- valve housing
- boring
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Manufacturing & Machinery (AREA)
- Valve Housings (AREA)
Abstract
The present invention relates to the technical fields of the reactor cooling system at million kilowatt nuclear power station,Disclose a kind of valve housing and its processing method of nuclear power plant reactor cooling system,Include the first end oral area and second end oral area set on the first tube body opposite end,It is respectively used to be weldingly connected with external pipe,Wherein,The first internal face and the first outside wall surface that first end oral area includes present row order scalariform respectively and downlink is ladder-like,I.e.,Gradually reduce at the tube body thickness to port edge that first internal face and the first outside wall surface are surrounded jointly,Therefore it is less susceptible to generate stress concentration or other phenomenon of ruptures compared to vertical welding junction,And overall stepped first end oral area makes the valve housing and external devices bonding area bigger of nuclear power plant reactor cooling system,The stability and compactness being connect to further enhance valve housing with external devices,And then meet nuclear safety requirement；Similarly, the second end oral area added in the other end of the first tube body also has above-mentioned advantageous effect.
Description
Technical field
The invention belongs to the technical fields of the reactor cooling system at million kilowatt nuclear power station, are to relate to more specifically
And a kind of valve housing and its processing method of nuclear power plant reactor cooling system.
Background technology
Reactor RHR system (RRA) and reactor cooling system can be claimed, find what it included in maintenance process
There is more boron to crystallize at valve cap of valve, related personnel thinks that valve internal mechanism goes wrong after analyzing need Disintegration overhaul.
Service personnel carries out suppressing examination after cutting down valve from pipeline from reactor waste discharge (RRA) system pipeline afterwards
It tests, is found when being suppressed to valve body, linear water spray is sprayed from valve housing, leads to that pressure can not be established in valve chamber, is demonstrate,proved
It is leak source at bright linear water spray, leak source, which occurs, in valve housing to be continuing with, and most easy method is can only to shut down greatly
Valve housing is replaced when repairing.
However, the valve housing spare part provided in warehouse inside nuclear power station, valve housing spare part is in nuclear power station warehouse
Standard valve shell spare part, including the first tube body and set on the first tube body side and coupled the second logical tube body, and should
One end periphery far from the first tube body of second tube body is arranged with ring flange；If being directly replaced using valve housing spare part,
Because the both ends port of its first tube body is parallel right angle port, easily occur weld strength and leakproofness when being connect with external pipe
It is not high, coordinate problem not in place, is unsatisfactory for nuclear safety requirement.
Invention content
The purpose of the present invention is to provide a kind of valve housings of nuclear power plant reactor cooling system, to solve the prior art
Present in valve housing spare part easily there is weld strength when being connect with external pipe and leakproofness is not high, coordinate not in place ask
Topic causes to be unsatisfactory for the technical issues of nuclear safety requires.
To achieve the above object, the technical solution adopted by the present invention is：A kind of nuclear power plant reactor cooling system is provided
Valve housing includes the first tube body in hollow cylinder shape, and is interconnected set on first tube body side and with it
The second tube body, one end periphery of second tube body is arranged with ring flange, the valve of the nuclear power plant reactor cooling system
Shell further includes the first end oral area and second end oral area set on first tube end, and the first end oral area, which has, is in respectively
Downlink is ladder-like and the first stair-stepping outside wall surface of uplink and the first internal face, the second end oral area have respectively in downlink
Ladder-like and the second stair-stepping outside wall surface of uplink and the second internal face.
Further, the first end oral area further includes that opposite end is connected to first outside wall surface and described
One internal face and perpendicular to the first end face of the central axes of first tube body, first outside wall surface include being connected to described the
End face and busbar and the first circular conical surface that the first end face is in the first angle, are connected to the outer circumference surface of first tube body
And busbar is connected to first circular cone with the first end face in the second circular conical surface and opposite end of the second angle
First cylindrical surface in face and second circular conical surface.
Further, first internal face includes the inner peripheral surface and busbar and described for being connected to first tube body
The busbar of the inner peripheral surface of one tube body is connected to the first end in the third circular conical surface and opposite end of third angle
Second cylindrical surface in face and the third circular conical surface.
Further, the second end oral area further includes that opposite end is connected to second outside wall surface and described
Two internal faces and perpendicular to the second end face of the central axes of first tube body, second outside wall surface include being connected to described the
Biend and busbar and the 4th circular conical surface that the second end face is in the 4th angle, are connected to the outer circumference surface of first tube body
And busbar is connected to the 5th circular cone with the second end face in the 5th circular conical surface and opposite end of the 5th angle
The third cylindrical surface in face and the 4th circular conical surface.
Further, second internal face includes the inner peripheral surface and busbar and described for being connected to first tube body
The busbar of the inner peripheral surface of one tube body is connected to the second end in the 6th circular conical surface and opposite end of the 6th angle
4th cylindrical surface in face and the 6th circular conical surface.
Further, the axis parallel of the busbar on first cylindrical surface and first tube body；Second cylinder
The axis parallel of the busbar in face and first tube body.
Further, the axis parallel of the busbar on the third cylindrical surface and first tube body；4th cylinder
The axis parallel of the busbar in face and first tube body.
Further, first angle is identical as the 4th angle, second angle and the 5th angle phase
Together, the third angle is identical as the 6th angle.
Further, first circular conical surface is connected with first cylindrical surface with fillet, the third circular conical surface and institute
The second cylindrical surface is stated with fillet to be connected；4th circular conical surface is connected with the third cylindrical surface with fillet, the 6th circular cone
Face is connected with the 4th cylindrical surface with fillet.
The present invention also provides a kind of processing methods of the valve housing of nuclear power plant reactor cooling system, for processing
The valve housing of nuclear power plant reactor cooling system is stated, including：
Preparation process：Preparation valve housing spare part, boring machine, pressing plate, hundred for measuring straightness, concentricity and flatness
Divide table；
Initialization step：The ring flange of the valve housing spare part is compressed using at least two pressing plates and is positioned at described
On the workbench of boring machine；
First centering step：The relative position of first tube body and the boring machine is adjusted, until the spindle shaft of the boring machine
The central axes concentricity and straightness error of line and first tube body are in the first range；
First end oral area procedure of processing：First end face described in boring, the first circular conical surface described in boring, the first circle described in boring
Cylinder, the second circular conical surface described in boring, the second cylindrical surface described in boring, third circular conical surface described in boring；
Rotate the workbench of the boring machine；
Centering step again：The relative position of first tube body and the boring machine is adjusted, until the spindle shaft of the boring machine
The central axes concentricity and straightness error of line and first tube body are in the second range；
Second end oral area procedure of processing：Second end face described in boring, the 4th circular conical surface described in boring, third circle described in boring
Cylinder, the 5th circular conical surface described in boring, the 4th cylindrical surface described in boring, the 6th circular conical surface described in boring.
Further, in the first end oral area procedure of processing, the central axes of the first end face and second tube body
Distance range is 390.5mm to 391.5mm；Ranging from 37 ° to 39 ° of first corner dimension, boring length range are 11mm
To 11.5mm；The busbar on first cylindrical surface and the angle of the first end face be 90 ° of boring length ranges be 19.2mm extremely
20mm；Ranging from 45 ° to 47 ° of second corner dimension；The bus length ranging from 15mm on second cylindrical surface is extremely
15.5mm, and second cylindrical surface and the central axes distance range of first tube body are 124.75mm to 125mm, and it is described
The busbar on the second cylindrical surface and the angle of the first end face are 90 °；Ranging from 14 ° to 16 ° of the third corner dimension.
Further, the central axes distance range of the second end face and second tube body be 360.5mm extremely
361.5mm；Ranging from 37 ° to 39 ° of 4th corner dimension, boring length range are 11mm to 11.5mm；The third circle
The busbar of cylinder and the angle of the second end face are 90 °, and boring length range is 19.2mm to 20mm；5th angle is big
Small range is 45 ° to 47 °；The bus length ranging from 15mm to 15.5mm on the 4th cylindrical surface, and the 4th cylindrical surface
Be 124.75mm to 125mm with the central axes distance range of first tube body, and the busbar on the 4th cylindrical surface with it is described
The angle of second end face is 90 °；Ranging from 14 ° to 16 ° of 6th corner dimension.
Further, the valve housing processing method of the nuclear power plant reactor cooling system further includes in second circle
The junction rounded corner of the conical surface and first cylindrical surface；It is fallen in the junction on second cylindrical surface and the third cylindrical surface
Fillet；In the junction rounded corner of the 5th circular conical surface and the third cylindrical surface；On the 4th cylindrical surface and described the
The junction rounded corner of six circular conical surfaces.
The valve housing of nuclear power plant reactor cooling system provided by the invention and its advantageous effect of processing method are：
Compared with prior art, the valve housing of nuclear power plant reactor cooling system of the present invention in the opposite end of the first tube body by adding
If first end oral area and second end oral area, are respectively used to be weldingly connected with external pipe, wherein first end oral area include first
Internal face and the first outside wall surface present row order scalariform respectively and downlink is ladder-like, that is, the first internal face and the first outside wall surface are common
Gradually reduce at the tube body thickness to port edge of encirclement, thus compared to vertical welding junction be less susceptible to generate stress concentration or other
Phenomenon of rupture, and overall stepped first end oral area makes valve housing and the outside of nuclear power plant reactor cooling system
The stability and compactness that device bonding area bigger connect to further enhance valve housing with external devices, and then meet
Nuclear safety requirement；Similarly, the second end oral area added in the other end of the first tube body also has above-mentioned advantageous effect.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the main structure diagram of valve housing provided in an embodiment of the present invention；
Fig. 2 is the side structure schematic view of valve housing provided in an embodiment of the present invention；
Fig. 3 is the schematic cross-sectional view of valve housing provided in an embodiment of the present invention；
Fig. 4 is the enlarged diagram of the parts D in Fig. 3；
Fig. 5 is the enlarged diagram of C portion in Fig. 3.
Wherein, each reference numeral in figure：
The first tube bodies of 10-；The second tube bodies of 20-；30- ring flanges；40- first end oral areas；41- first end faces；42- first justifies
The conical surface；The second circular conical surfaces of 43-；44- third circular conical surfaces；The first cylindrical surfaces 45-；The second cylindrical surfaces 46-；50- second end oral areas；
51- second end faces；The 4th circular conical surfaces of 52-；The 5th circular conical surfaces of 53-；The 6th circular conical surfaces of 54-；55- thirds cylindrical surface；56- the 4th justifies
Cylinder；The first angles of S1-；The second angles of S2-；S3- third angles；The 4th angles of S4-；The 5th angles of S5-；The 6th angles of S6-；
The central axes of the first tube bodies of L1-；The central axes of the second tube bodies of L2-.
Specific implementation mode
In order to make technical problems, technical solutions and advantages to be solved be more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Also referring to Fig. 1 to Fig. 5, now the valve housing of nuclear power plant reactor cooling system provided by the invention is carried out
Explanation.The valve housing of nuclear power plant reactor cooling system includes the first tube body 10 in hollow cylinder shape, and set on the
One tube body, 10 side and second tube body 20 interconnected with it, one end periphery of the second tube body 20 are arranged with ring flange 30, core
The valve housing of power station reactor cooling system further includes the first end oral area 40 and second set on 10 opposite end of the first tube body
Port part 50, first end oral area 40, which has, is in respectively that downlink is ladder-like and stair-stepping first outside wall surface of uplink (figure is not marked) and the
One internal face (figure is not marked), it is in that downlink is ladder-like and stair-stepping second outside wall surface of uplink (is schemed respectively that second end oral area 50, which has,
Do not mark) and the second internal face (figure is not marked).The valve housing of nuclear power plant reactor cooling system provided by the invention is substantially in three
One end far from the first tube body 10 of siphunculus shape, the opposite end of the first tube body 10 and the second tube body 20 is respectively used to and exterior tube
Road is connected, wherein the opposite end of the first tube body 10 is equipped with first end oral area 40 and second end oral area 50, the first end oral area 40
Identical with the shape of second end oral area 50 and be used to be weldingly connected with external pipe, first end oral area 40 is because with being in respectively
Uplink is ladder-like and stair-stepping first internal face of downlink and the first outside wall surface, and makes its thickness compared with the thickness of the first tube body 20
It is smaller, and the column bigger of surface area ratio equal length；Second end oral area 50 is also identical as the effect of first end oral area 40.
Compared with prior art, the valve housing of nuclear power plant reactor cooling system of the present invention passes through in the first tube body 10
Opposite end adds first end oral area 40 and second end oral area 50, is respectively used to be weldingly connected with external pipe, wherein first end
The first internal face and the first outside wall surface that oral area 40 includes present row order scalariform respectively and downlink is ladder-like, that is, the first internal face
Gradually reduce at the tube body thickness to port edge surrounded jointly with the first outside wall surface, therefore is less susceptible to produce compared to vertical welding junction
Raw stress concentration or other phenomenon of ruptures, and overall stepped first end oral area 40 is so that nuclear power plant reactor cooling system
The valve housing of system and external devices bonding area bigger, to further enhance the stabilization that valve housing is connect with external devices
Property and compactness, and then meet nuclear safety requirement；Similarly, the second end oral area 50 added in the other end of the first tube body 10 also has
Standby above-mentioned advantageous effect.
Further, also referring to Fig. 1 to Fig. 3, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, first end oral area 40 further include that opposite end is connected to the first outside wall surface and first
The first end face 41 of internal face and central axes L1 perpendicular to the first tube body 10, the first outside wall surface include being connected to first end face 41
And busbar and first end face 41 are in the first circular conical surface 42 of the first angle S1, are connected to the outer circumference surface and busbar of the first tube body 10
With first end face 41 the first circular conical surface 42 and the are connected in the second circular conical surface 43 and opposite end of the second angle S2
First cylindrical surface 45 of two circular conical surfaces 43.First cylindrical surface 45 connect formation with the first circular conical surface 42 and the second circular conical surface 43 respectively
In stair-stepping first outside wall surface of downlink.
Further, also referring to Fig. 1 to Fig. 3, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, the first internal face include the inner peripheral surface and busbar and first for being connected to the first tube body 10
The busbar of the inner peripheral surface of tube body 10 is connected to first end in the third circular conical surface 44 and opposite end of third angle S3
Second cylindrical surface 46 in face 41 and third circular conical surface 44.Second cylindrical surface 46 is located at the lower section of the first circular conical surface 42, and with positioned at
The third circular conical surface 44 of second circular conical surface, 43 lower section is connected, and third circular conical surface 44 and the connection of the second cylindrical surface 46 form and present row order
First internal face of scalariform.
It is understood that above-mentioned uplink is ladder-like and downlink is ladder-like makes relative concept, i.e. the first internal face and first
The ladder trend of outside wall surface is opposite, and portion is particularly limited as upward or downward.
Further, also referring to Fig. 1 to Fig. 3, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, second end oral area 50 further include that opposite end is connected to the second outside wall surface and second
The second end face 51 of internal face and central axes L1 perpendicular to the first tube body 10, the second outside wall surface includes perpendicular to the first tube body
The second end face 51 of central axes L1 is connected to second end face 51 and fourth circular cone of the busbar with second end face 51 in the 4th angle S4
Face 52 is connected to the outer circumference surface of the first tube body 10 and fiveth circular conical surface 53 of the busbar with second end face 51 in the 5th angle S5,
And opposite end is connected to the third cylindrical surface 55 of the 5th circular conical surface 53 and the 4th circular conical surface 52.Second cylindrical surface 55 is divided
It is in stair-stepping second outside wall surface of downlink not connect formation with the 4th circular conical surface 52 and the 5th circular conical surface 53.
Further, also referring to Fig. 1 to Fig. 3, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, the second internal face include the inner peripheral surface and busbar and first for being connected to the first tube body 10
The busbar of the inner peripheral surface of tube body 10 is connected to second end in the 6th circular conical surface 54 and opposite end of the 6th angle S6
4th cylindrical surface 56 in face 51 and the 6th circular conical surface 54.4th cylindrical surface 56 is located at the lower section of the 4th circular conical surface 52, and with positioned at
6th circular conical surface 54 of 53 lower section of the 5th circular conical surface is connected, and the 6th circular conical surface 54 and the connection of the 4th cylindrical surface 56 form and present row order
Second internal face of scalariform.
It is understood that above-mentioned uplink is ladder-like and downlink is ladder-like makes relative concept, i.e. the second internal face and second
The ladder trend of outside wall surface is opposite, and portion is particularly limited as upward or downward.
Preferably, also referring to Fig. 1 to Fig. 3, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of shell, 10 integrated molding of the second tube body 20 and the first tube body.Specifically, the one of the second tube body 20
End is shaped in the side of the first tube body 10, and the periphery of the other end is arranged with ring flange 30.Second tube body 20 is substantially in hollow
Cylindric, one end is connected on the outer circumference surface of the first tube body 10 and is interconnected with the first tube body 10, the periphery of the other end
It is arranged with ring flange 30, is mainly used for being detachably connected with other devices.
Preferably, referring to Fig. 3, one kind of the valve housing as nuclear power plant reactor cooling system provided by the invention
Specific implementation mode, the central axes L2 of the second tube body are mutually perpendicular to the central axes L1 of the first tube body.
Further, also referring to Fig. 3 to Fig. 5, the valve as nuclear power plant reactor cooling system provided by the invention
The busbar of a kind of specific implementation mode of gate housing, the first cylindrical surface 45 is parallel with the central axes L1 of the first tube body；Second cylinder
The busbar in face 46 is parallel with the central axes L1 of the first tube body.The busbar on the first cylindrical surface 45 and the busbar on the second cylindrical surface 46 difference
It is parallel with the central axes L1 of the first tube body, i.e., in process, cutter need to only carry out along the central axes directions L1 of the first tube body into
It gives, i.e., independent traverse feed feeds without transverse and longitudinal, reduce difficulty of processing, also ensures first end oral area 40 1 simultaneously
Fixed structural strength.
Further, also referring to Fig. 3 to Fig. 5, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, the busbar on third cylindrical surface 55 are parallel with the central axes L1 of the first tube body；4th cylinder
The busbar in face 56 is parallel with the central axes L1 of the first tube body.The busbar on third cylindrical surface 55 and the busbar on the 4th cylindrical surface 56 difference
It is parallel with the central axes L1 of the first tube body, i.e., in process, cutter need to only carry out along the central axes directions L1 of the first tube body into
It gives, i.e., independent traverse feed feeds without transverse and longitudinal, reduce difficulty of processing, also ensures second end oral area 50 1 simultaneously
Fixed structural strength.
Further, also referring to Fig. 4 to Fig. 5, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, the first angle S1 is identical as the 4th angle S4, the second angle S2 and the 5th angle S5 phases
Together, third angle S3 is identical as the 6th angle S6.In the present embodiment, the shape of first end oral area 40 and second end oral area 50
Shape is identical.Certainly, in other embodiments of the invention, above-mentioned each angle of second end oral area 50 also can be with corresponding
Each corner dimension of one end oral area 40 is different, i.e. the two shape is different, the actual demand being subject under specific processing conditions, this
Place does not limit uniquely.
Further, also referring to Fig. 4 to Fig. 5, the valve as nuclear power plant reactor cooling system provided by the invention
A kind of specific implementation mode of gate housing, the first circular conical surface 42 are connected with the first cylindrical surface 45 with fillet (figure is not marked), third circle
The conical surface 44 is connected with the junction on the second cylindrical surface 46 with fillet；4th circular conical surface 52 is connected with third cylindrical surface 55 with fillet,
6th circular conical surface 54 is connected with the 4th cylindrical surface 56 with fillet.The junction rounding of first circular conical surface 42 and the first cylindrical surface 45
Angle and third circular conical surface 44 and the junction rounded corner on the second cylindrical surface 46 are to reduce the stress collection at structural weak
In, to reduce breakage risk, fillet size, which is subject between the face of face, herein can be smoothly connected transition, not limit uniquely herein
It is fixed.
Also referring to Fig. 1 to Fig. 5, the present invention also provides a kind of valve housings of nuclear power plant reactor cooling system
Processing method, the valve housing for processing above-mentioned nuclear power plant reactor cooling system, including：
Preparation process：Preparation valve housing spare part, boring machine, pressing plate, and for measuring straightness, concentricity and flatness
Dial gauge.Here, as in background technology, valve housing spare part includes that the first tube body 10 and one end are connected to first pipe
The outer end fixing sleeve of 10 side of body and the second tube body 20 communicated therewith, the second tube body 20 is equipped with ring flange 30.
Initialization step：The ring flange 30 of valve housing spare part is compressed using at least two pressing plates and is positioned at the work of boring machine
On platform.In the present embodiment, valve housing spare part is positioned using four pressing plates, wherein each pressing plate is pressed in flange respectively
At four Along ents of disk 30, certainly, in other embodiments of the invention, the setting of the number and compacted position of pressing plate is with energy
It is enough accurately and subject to being firmly located on boring table, not limit valve housing spare part uniquely herein.
First centering step：The relative position of the first tube body 10 and boring machine is adjusted, until the main-shaft axis of boring machine and the first pipe
In central axes L1 concentricitys and straightness error ranging from the first error range of body.Here the first error range is preferably 0-
0.1mm, certainly in other embodiments of the invention, first error range can not make only herein depending on specific requirements
One limits.Specifically, go out to place dial gauge in the port inner wall A of the first tube body 10 of valve housing spare part, then start boring machine,
Boring spindle is reached into the first tube body 10 at B, in the present embodiment, preferably outreach is 300mm, observes dial gauge
Reading variation, to obtain its straight line degrees of data, and records；In the present embodiment, method described above measures the first tube body 10 respectively
The straightness in four orientation up and down of inner wall, the position of valve housing spare part is adjusted to the straightness error in each orientation
It is qualification within 0.1mm.Similarly, the concentricity for measuring four orientation of the inner wall of the first tube body 10 respectively, by valve
It is qualification within 0.1mm that the position of shell spare part, which adjusts the concentricity to each orientation, certain concentricity and
Straightness error is preferably 0mm, that is, main-shaft axis is overlapped in the central axes L1 of the first tube body.
40 procedure of processing of first end oral area：
Process 1：The central axes L2 distance ranges of boring first end face 41, first end face 41 and the second tube body are 390.5mm
To 391.5mm；The processing of first end face 41 includes mainly the works such as feed and measurement three times to knife, for the first time feed, secondary feed
Sequence.Specifically, include to knife：Boring cutter is fitted into boring cutter bar, is fitted into boring spindle by boring cutter bar, starts boring machine, makes boring
Bed main shaft rotation, and slow feed manually records feed handle when highest point of the boring cutter slight impact to first end oral area 40
Stroke mark, as feed benchmark；Feed for the first time includes：Using the feed benchmark of record as origin, 1mm is fed forward,
Boring is carried out to the outer end face of the first tube body 10, secondary boring and three times boring repeat the action of feed for the first time；Measure main packet
The measurement of flatness, the depth of parallelism and verticality is included, in the present embodiment, by dial gauge to four etc. of the end face after processing
Carry out measurement up to standard at branch, specific method is to make migration on the end face of the probe of dial gauge after processing, or keep hundred
Divide table motionless, the end face after processing is made to do directed movement relative to the probe of dial gauge, is read until end face is worked into dial gauge
Number be always 0 or the number of degrees variation be less than 0.1mm when, then first end face 41 processes qualification.
Process 2：The first circular conical surface of boring 42, it is 37 ° to 39 ° to make the first angle S1 magnitude ranges, and boring length range is
11mm to 11.5mm.In the present embodiment, boring length refers to feeding of the boring cutter along main shaft axial direction on the basis of first end face 41
Distance.Referred to herein as, boring cutter is along main shaft axial feed 11mm to 11.5mm, herein preferably 11mm；And make the first angle S1
Angle is between 37 ° to 39 °, preferably 37 ° herein.
Process 3：The first cylindrical surface of boring 45, the busbar for making the first cylindrical surface 45 and the angle of first end face 41 are 90 °, boring
It is 19.2mm to 20mm to cut length range.In the present embodiment, boring length refers on the basis of first end face 41, and boring cutter is along main
The feeding distance of axis axial direction.Referred to herein as, on the basis of first end face 41, boring cutter is axially continued to feed to along main shaft and first end
The distance range in face 41 is 19.2mm to 20mm, herein preferably 20mm；And make the busbar and first on the first cylindrical surface 45
The angle of end face 41 is 90 °, that is, boring cutter does not make the movement of other directions only along the movement of main shaft axial direction at this time.
Process 4：The second circular conical surface of boring 43, it is 45 ° to 47 ° to make the magnitude range of the second angle S2.Here, with the first circle
On the basis of at the one side edge opposite with the first end face 41 of cylinder 45, second angle S2 to 45 ° to 47 ° of processing is excellent herein
It is selected as 45 °.
Process 5：The second cylindrical surface of boring 46 makes the bus length ranging from 15mm on the second cylindrical surface 46 to 15.5mm, and
The central axes L1 distance ranges of second cylindrical surface 46 and the first tube body are 124.75mm to 125mm, and the mother on the second cylindrical surface 46
Line and the angle of first end face 41 are 90 °；Here, the processing on the second cylindrical surface 46 not only to ensure boring length 15mm extremely
Between 15.5mm, also to ensure that the second cylindrical surface 46 and the central axes L1 distances of the first tube body arrive for 124.75mm after processing
Between 125mm, that is, the internal diameter of guarantee first end oral area 40 is in 249.5mm between 250mm.
Process 6：Boring third circular conical surface 44, it is 14 ° to 16 ° to make third angle S3 magnitude ranges.Here, with the first cylinder
On the basis of at the one side edge opposite with the first end face 41 in face 45, second angle S2 to 45 ° to 47 ° is processed, herein preferably
It is 45 °.
Process 7：Rotate 180 ° of the workbench of boring machine.
Secondary centering step is identical as first centering step.
The procedure of processing of 50 procedure of processing of second end oral area and first end oral area 40 difference lies in：It need to ensure second end face
51 and second the central axes L2 distance ranges of tube body be 360.5mm to 361.5mm, preferably 361mm herein, remaining step is whole
It is identical.In other embodiments of the invention, each circular conical surface, cylindrical surface and each angle which includes
Size can the corresponding each size of first end oral area 40 it is different, the actual demand being subject under specific working condition, this
Place does not limit uniquely.
By this method process nuclear power plant reactor cooling system valve housing, compared with prior art, by
The opposite end of first tube body 10 adds first end oral area 40 and second end oral area 50, is respectively used to weld phase with external pipe
Even, wherein first end oral area 40 includes the first circular conical surface 42, the second circular conical surface 43, is also justified first by the first cylindrical surface 45
The conical surface 42 connected with the second circular conical surface 43 to be formed it is ladder-like so that valve housing and external devices bonding area bigger and phase
It is less susceptible to generate stress concentration or other phenomenon of ruptures compared with vertical welding junction；By adding the second cylinder in first end oral area 40
Second cylindrical surface 46 is transitioned into the inner peripheral surface of the first tube body 10 further through processing third circular conical surface 44, not weakened by face 46
Under the premise of the intensity of valve housing so that valve housing is further increased with external pipe bonding area, to further increase
The stability and compactness that strong valve housing is connect with external devices, and then meet nuclear safety requirement；Similarly, in the first tube body 10
The second end oral area 50 that adds of the other end also have above-mentioned advantageous effect.
Preferably as a kind of specific embodiment party of the valve housing of nuclear power plant reactor cooling system provided by the invention
Formula, processing first end face 41, second end face 51, the first circular conical surface 42, the second circular conical surface 43, third circular conical surface 44, the 4th circular cone
Face 52, the 5th circular conical surface 53, the 6th circular conical surface 54, the first cylindrical surface 45, the second cylindrical surface 46, third cylindrical surface 55, the 4th circle
Cylinder 56 is divided into feed three times.The depth of cut three times on these circular conical surfaces or cylindrical surface is gradually reduced, to meet valve housing most
Whole size requirement, reduces mismachining tolerance, reduces scrappage.It certainly, should be according to processing effect to each during actual processing
The feeding number of a process and the amount of feeding fed every time are adjusted, and are not limited uniquely herein.
Further, a kind of specific implementation as the valve housing of nuclear power plant reactor cooling system provided by the invention
Mode, valve housing processing method further include the junction rounded corner in the second circular conical surface 43 and the first cylindrical surface 45；Second
The junction rounded corner on cylindrical surface 46 and third cylindrical surface 55；In the junction rounding of the 5th circular conical surface 53 and third cylindrical surface 55
Angle；Junction rounded corner on the 4th cylindrical surface 56 and the 6th circular conical surface 54.The process of rounded corner can utilize boring cutter herein,
The tools such as lathe tool can be utilized, are not limited uniquely herein.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle etc., should all be included in the protection scope of the present invention.
Claims (13)
1. the valve housing of nuclear power plant reactor cooling system includes the first tube body in hollow cylinder shape, and is set to institute
State the first tube body side and second tube body interconnected with it, one end periphery of second tube body is arranged with ring flange,
It is characterized in that：The valve housing of the nuclear power plant reactor cooling system further includes set on the of the first tube body opposite end
One end oral area and second end oral area, the first end oral area, which has, is in respectively that downlink is ladder-like and uplink is stair-stepping outside first
Wall surface and the first internal face, it is in that downlink is ladder-like and the second stair-stepping outside wall surface of uplink respectively that the second end oral area, which has,
With the second internal face.
2. the valve housing of nuclear power plant reactor cooling system as described in claim 1, it is characterised in that：The first port
Portion further includes that opposite end is connected to first outside wall surface and first internal face and perpendicular to first tube body
Central axes first end face, first outside wall surface includes being connected to the first end face and busbar is in the first end face
First circular conical surface of the first angle, is connected to the outer circumference surface of first tube body and busbar is pressed from both sides with the first end face in second
Second circular conical surface and opposite end at angle are connected to the first cylinder of first circular conical surface and second circular conical surface
Face.
3. the valve housing of nuclear power plant reactor cooling system as claimed in claim 2, it is characterised in that：First inner wall
The busbar that face includes the inner peripheral surface and the inner peripheral surface of busbar and first tube body that are connected to first tube body is in third
The third circular conical surface and opposite end of angle are connected to the second cylinder of the first end face and the third circular conical surface
Face.
4. the valve housing of nuclear power plant reactor cooling system as claimed in claim 3, it is characterised in that：The second port
Portion further includes that opposite end is connected to second outside wall surface and second internal face and perpendicular to first tube body
Central axes second end face, second outside wall surface includes being connected to the second end face and busbar is in the second end face
4th circular conical surface of the 4th angle, is connected to the outer circumference surface of first tube body and busbar is pressed from both sides with the second end face in the 5th
5th circular conical surface and opposite end at angle are connected to the third cylinder of the 5th circular conical surface and the 4th circular conical surface
Face.
5. the valve housing of nuclear power plant reactor cooling system as claimed in claim 4, it is characterised in that：Second inner wall
Face includes that the busbar of the inner peripheral surface and the inner peripheral surface of busbar and first tube body that are connected to first tube body is in the 6th
The 6th circular conical surface and opposite end of angle are connected to the 4th cylinder of the second end face and the 6th circular conical surface
Face.
6. the valve housing of nuclear power plant reactor cooling system as claimed in claim 5, it is characterised in that：First cylinder
The axis parallel of the busbar in face and first tube body；The central axes of the busbar on second cylindrical surface and first tube body
It is parallel.
7. the valve housing of nuclear power plant reactor cooling system as claimed in claim 5, it is characterised in that：The third cylinder
The axis parallel of the busbar in face and first tube body；The central axes of the busbar and first tube body on the 4th cylindrical surface
It is parallel.
8. the valve housing of nuclear power plant reactor cooling system as claimed in claim 5, it is characterised in that：First angle
Identical as the 4th angle, second angle is identical as the 5th angle, the third angle and the 6th angle
It is identical.
9. the valve housing of nuclear power plant reactor cooling system as claimed in claim 5, it is characterised in that：First circular cone
Face is connected with first cylindrical surface with fillet, and the third circular conical surface is connected with second cylindrical surface with fillet；Described
Four circular conical surfaces are connected with the third cylindrical surface with fillet, and the 6th circular conical surface is connected with the 4th cylindrical surface with fillet.
10. the processing method of the valve housing of nuclear power plant reactor cooling system, for processing any one of claim 1 to 9 institute
The valve housing stated, which is characterized in that including：
Preparation process：Prepare valve housing spare part, boring machine, pressing plate, for measuring straightness, concentricity and the percentage of flatness
Table；
Initialization step：The ring flange of the valve housing spare part is compressed using at least two pressing plates and is positioned at the boring machine
Workbench on；
First centering step：Adjust the relative position of first tube body and the boring machine, until the main-shaft axis of the boring machine with
The central axes concentricity and straightness error of first tube body are in the first range；
First end oral area procedure of processing：First end face described in boring, the first circular conical surface described in boring, the first cylinder described in boring
Face, the second circular conical surface described in boring, the second cylindrical surface described in boring, third circular conical surface described in boring；
Rotate the workbench of the boring machine；
Centering step again：Adjust the relative position of first tube body and the boring machine, until the main-shaft axis of the boring machine with
The central axes concentricity and straightness error of first tube body are in the second range；
Second end oral area procedure of processing：Second end face described in boring, the 4th circular conical surface described in boring, third cylinder described in boring
Face, the 5th circular conical surface described in boring, the 4th cylindrical surface described in boring, the 6th circular conical surface described in boring.
11. the processing method of the valve housing of nuclear power plant reactor cooling system as claimed in claim 10, it is characterised in that：
In the first end oral area procedure of processing, the central axes distance range of the first end face and second tube body is 390.5mm
To 391.5mm；Ranging from 37 ° to 39 ° of first corner dimension, boring length range are 11mm to 11.5mm；Described first
It is 19.2mm to 20mm that the busbar on cylindrical surface and the angle of the first end face, which are 90 ° of boring length ranges,；Second angle
Magnitude range is 45 ° to 47 °；The bus length ranging from 15mm to 15.5mm on second cylindrical surface, and second cylinder
The central axes distance range of face and first tube body is 124.75mm to 125mm, and the busbar on second cylindrical surface and institute
The angle for stating first end face is 90 °；Ranging from 14 ° to 16 ° of the third corner dimension.
12. the processing method of the valve housing of nuclear power plant reactor cooling system as claimed in claim 10, it is characterised in that：
The central axes distance range of the second end face and second tube body is 360.5mm to 361.5mm；4th corner dimension
Ranging from 37 ° to 39 °, boring length range is 11mm to 11.5mm；The busbar on the third cylindrical surface and the second end face
Angle be 90 °, boring length range be 19.2mm to 20mm；Ranging from 45 ° to 47 ° of 5th corner dimension；Described
The bus length on four cylindrical surfaces ranging from 15mm to 15.5mm, and the central axes of the 4th cylindrical surface and first tube body away from
From ranging from 124.75mm to 125mm, and the busbar on the 4th cylindrical surface and the angle of the second end face are 90 °；It is described
Ranging from 14 ° to 16 ° of 6th corner dimension.
13. the processing method of the valve housing of nuclear power plant reactor cooling system as claimed in claim 10, it is characterised in that：
The valve housing processing method further includes the junction rounded corner in second circular conical surface and first cylindrical surface；Institute
State the junction rounded corner on the second cylindrical surface and the third cylindrical surface；On the 5th circular conical surface and the third cylindrical surface
Junction rounded corner；Junction rounded corner on the 4th cylindrical surface and the 6th circular conical surface.
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| CN201810446772.6A CN108538412B (en) | 2018-05-11 | 2018-05-11 | Valve shell of nuclear power plant reactor cooling system and machining method thereof |
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| CN201810446772.6A CN108538412B (en) | 2018-05-11 | 2018-05-11 | Valve shell of nuclear power plant reactor cooling system and machining method thereof |
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| CN108538412B CN108538412B (en) | 2020-03-03 |
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Cited By (1)
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| CN110653578A (en) * | 2019-10-28 | 2020-01-07 | 宝鸡市隆庆金属材料制品厂 | Titanium alloy shell, wheel rail detection instrument and processing method of titanium alloy shell |
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| CN110653578A (en) * | 2019-10-28 | 2020-01-07 | 宝鸡市隆庆金属材料制品厂 | Titanium alloy shell, wheel rail detection instrument and processing method of titanium alloy shell |
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| CN108538412B (en) | 2020-03-03 |
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