CN105817831A - Threaded hole defect detecting and repairing method and device for large container and device of nuclear power plant - Google Patents
Threaded hole defect detecting and repairing method and device for large container and device of nuclear power plant Download PDFInfo
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- CN105817831A CN105817831A CN201610314895.5A CN201610314895A CN105817831A CN 105817831 A CN105817831 A CN 105817831A CN 201610314895 A CN201610314895 A CN 201610314895A CN 105817831 A CN105817831 A CN 105817831A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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Abstract
The invention discloses a threaded hole defect detecting and repairing method for a large container and a large device of a nuclear power plant. The method comprises the following steps: obtaining continuous and positioning detection data information of the surface of any one threaded hole of a pressure vessel of a reactor; conducting size detecting on internal threads which are judged to be zero-defect or have defects in the acceptable range; locally processing the threads with defects; and integrally repairing the threads with defects. The invention further discloses a threaded hole defect detecting and repairing device for the large container and the large device of the nuclear power plant. Through the implementation of the method and the device, different defects of the large container and the large device of the nuclear power plant can be treated by adopting different processes. The thread repairing range is expanded by adopting a helical interpolation and milling process. The defect detecting and repairing efficiency is further improved, and the radiation dosage of workers is effectively reduced.
Description
Technical field
The present invention relates to nuclear power field, particularly relate to a kind of nuclear power station tun and the screw defects detection of equipment and restorative procedure, device.
Background technology
In prior art, the defects detection of screw and repair the technology mode of commonly used screw tap processing and carry out, but processed size by instrument and affected, its screw defects detection being not particularly suited for nuclear power station tun and equipment and reparation.The existing screw defects detection for nuclear power station tun and equipment and the method for reparation, be primarily present following technological deficiency:
1, automaticity is the highest, and maintenance means are limited.
2, screw thread repair coverage is limited, and overhaul efficiency is the highest.
Summary of the invention
The technical problem to be solved is, it is provided that a kind of nuclear power station tun and the screw defects detection of equipment and restorative procedure, device, it is possible to for nuclear power station tun and the different defects of equipment, use different technique；Spiral interpolation miller artistic skill enough expands the scope that screw thread is repaired；Improve defects detection and the efficiency of reparation further, effectively reduce the raying dosage of workman.
In order to solve above-mentioned technical problem, The embodiment provides a kind of nuclear power station tun and the screw defects detection of equipment and restorative procedure, comprise the following steps: obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula, according to checking that data message judges any one screwed hole surface whether existing defects, if the judgment is Yes, then the type of defect, size and location data message are recorded；If being judged as NO, then perform next step；To being judged as that existing defects or the defect female thread in tolerance interval does not carries out dimensional gaughing, it is judged that check that result is the most qualified, if the judgment is Yes, then terminate；If the judgment is No, then the step that screw thread is repaired by the concrete condition according to defect is performed；Screw thread to existing defects carries out the step of Local treatment；Screw thread to existing defects carries out the step of overall reparation.
Wherein, obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula includes: screw thread exist tiny burr, tiny subside, the first local defect information of any one defect in tiny distortion and Superficial Foreign Body and screw thread exist subside, distort, any one defect in misrun and thread fracture, and second that this defect is local defect locally defect information.
Wherein, the step that the screw thread of existing defects carries out Local treatment includes: obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula is when being the first local defect information, uses chasing tool that screwed hole is carried out combing；When the continuous print obtaining any one screwed hole surface of reactor pressure vessel, the inspection data message positioning formula are the second local defect information, use the thread segment of bolt hole milling process excision damaged.
Wherein, use chasing tool that screwed hole is carried out combing to include: chaser uses the mode not removing fertile material, and cutter is close to original thread, is carried out the step of feed along original thread contour line.
Wherein, the step that the screw thread of existing defects carries out overall reparation includes: use the method for spiral interpolation processing screw thread to repair screw thread, the method selecting to use molding cutter supporting three-shaft linkage lathe milling, after equipment installs centering, spiral interpolation is carried out along original thread path centered by screwed hole, different interpolation radiuses can be selected according to actual requirement.
Wherein, the screw thread to existing defects also includes after carrying out the overall step repaired: checks whether screwed hole surface still suffers from defect, uses the step that go-no go gauge measures after determining screw thread no significant defect.
For solving above-mentioned technical problem, the invention also discloses another kind of technical scheme, a kind of nuclear power station tun and the screw defects detection of equipment and prosthetic device, including: in order to obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the Video Detection instrument checking data message of location formula；In order to being judged as that not existing defects or the defect female thread in tolerance interval carries out inside micrometer and/or the go-no go gauge of dimensional gaughing；In order to the screw thread of existing defects to be carried out chasing tool and/or the milling cutter of Local treatment；In order to the screw thread of existing defects to be carried out the spiral interpolation processing instrument of overall reparation；Wherein: Video Detection instrument, inside micrometer and/or go-no go gauge, chasing tool and/or milling cutter and spiral interpolation processing instrument are sequentially connected composition streamline.
Wherein, Video Detection instrument is that RV bolt hole is continuous, positions formula closed-circuit television somascope, and RV bolt hole is continuous, location formula closed-circuit television somascope includes interconnective display, recorder, photographing unit and videocorder.
Wherein, also include: be connected with inside micrometer and/or go-no go gauge in order to the screw thread damage screwed hole Milling Machine excised of section.
Wherein, spiral interpolation processing instrument includes three-shaft linkage lathe and the molding cutter being arranged on three-shaft linkage lathe.
Nuclear power station tun provided by the present invention and the screw defects detection of equipment and restorative procedure, device, have the advantages that
First, Video Detection instrument, inside micrometer and/or go-no go gauge, chasing tool and/or milling cutter and spiral interpolation processing instrument are sequentially connected composition streamline, Video Detection instrument can obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula, and according to checking that data message judges any one screwed hole surface whether existing defects, inside micrometer and/or go-no go gauge are to being judged as that existing defects or the defect female thread in tolerance interval does not carries out dimensional gaughing, chasing tool and/or milling cutter are to judging that the female thread in tolerance interval is not repaired；Spiral interpolation processing instrument carries out overall reparation to the screw thread of existing defects, it is possible to for nuclear power station tun and the different defects of equipment, use different technique；Spiral interpolation miller artistic skill enough expands the scope that screw thread is repaired；Improve defects detection and the efficiency of reparation further, effectively reduce the raying dosage of workman.
The second, Video Detection instrument includes interconnective display, recorder, photographing unit and videocorder, can will check that result shows as requested, records, takes a picture and record, thus provide foundation for its maintaining or maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is nuclear power station tun of the present invention and the screw defects detection of equipment and the FB(flow block) of restorative procedure.
Fig. 2 is nuclear power station tun of the present invention and the screw defects detection of equipment and the structural representation of prosthetic device.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
See Fig. 1, for nuclear power station tun of the present invention and the screw defects detection of equipment and the embodiment one of restorative procedure.
Nuclear power station tun in the present embodiment and the screw defects detection of equipment and restorative procedure, comprise the following steps:
Step S10, obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula, any one screwed hole surface described whether existing defects is judged according to described inspection data message, if the judgment is Yes, then the type of defect, size and location data message are recorded；If being judged as NO, then perform next step；
When being embodied as, above-mentioned steps can be implemented by Video Detection instrument, such as: Video Detection instrument can be that RV bolt hole is continuous, position formula closed-circuit television somascope, and the whole thread surface for bolt hole each to reactor pressure vessel carries out continuously, positions the Close Circuit Television (CCTV) inspection of formula.When being embodied as, RV bolt hole is continuous, location formula closed-circuit television somascope also includes interconnective display, recorder, photographing unit and videocorder, testing result information can carry out telescreen as requested to show, record, take a picture and record a video, thus provide foundation for its maintaining or maintenance.If existing defects, then recording the type of defect, size and location.
Preferably, obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula includes: screw thread exist tiny burr, tiny subside, the first local defect information of any one defect in tiny distortion and Superficial Foreign Body and screw thread exist subside, distort, any one defect in misrun and thread fracture, and second that this defect is local defect locally defect information.
Step S20, to being judged as that existing defects or the defect female thread in tolerance interval does not carries out dimensional gaughing, it is judged that checks that result is the most qualified, if the judgment is Yes, then terminates；If the judgment is No, then the step that screw thread is repaired by the concrete condition according to defect is performed.
When being embodied as, after, location formula closed-circuit television somascope continuous through RV bolt hole checks, if screw thread not existing defects or defect are within the acceptable range, perform the step of internal threads dimensional gaughing.Dimensional gaughing uses inside micrometer and go-no go gauge to carry out.If dimensional gaughing is qualified, then without screw thread reparation；If off-dimension or screw thread existing defects, then need the concrete condition according to defect that screw thread is repaired.
Step S30, carries out the step of Local treatment to the screw thread of existing defects；
When being embodied as, the step that the screw thread of existing defects carries out Local treatment includes: if obtaining the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula is when being the first local defect information, uses chasing tool that screwed hole is carried out combing；Wherein: use chasing tool that screwed hole is carried out combing and include: chaser uses the mode not removing fertile material, and cutter is close to original thread, is carried out the step of feed along original thread contour line.Still need to carry out the detection of video and go-no go gauge after screw thread combing, qualified to guarantee.
If the inspection data message of the continuous print on any one screwed hole surface of acquisition reactor pressure vessel, location formula is the second local defect information, use the thread segment of bolt hole milling process excision damaged.Bolt milling cutter uses the mode of local milling, i.e. local defect is carried out excision process.Needing before defect excision to be estimated excision screw thread impact, assessment no problem can carry out excising work, still needs to carry out video and size detection after screw thread excision, qualified to guarantee.
Step S40, carries out the overall step repaired to the screw thread of existing defects.
When being embodied as, if screwed hole exists major defect on a large scale, so that using chasing tool, milling cutter still can not meet requirement after cannot processing or process, at this moment reply screwed hole carries out overall reaming entirety repair process.Use the method that material expands screwed hole central diameter of removing, need to change bolt adaptation specification to reach pressure vessel upstate simultaneously.Screw thread reparation uses spiral interpolation processing screw thread technique, i.e. select to use molding cutter supporting three-shaft linkage lathe milling process, after equipment installs centering, centered by screwed hole, carry out spiral interpolation along original thread path, according to actual requirement, select different interpolation radiuses.
Preferably, the screw thread to existing defects also includes after carrying out the overall step repaired: checks whether screwed hole surface still suffers from defect, uses the step that go-no go gauge measures after determining screw thread no significant defect.It is to say, after screw thread reaming terminates, also need video check, using go-no go gauge to measure after determining screw thread no significant defect, if meeting condition, then screwed hole reparation completes.If Eligibility requirements can not be met, then continue reaming and repair step, qualified to guarantee.
The invention also discloses a kind of nuclear power station tun and the screw defects detection of equipment and prosthetic device, including: in order to obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the Video Detection instrument 1 checking data message of location formula；In order to being judged as that not existing defects or the defect female thread in tolerance interval carries out inside micrometer and/or the go-no go gauge 2 of dimensional gaughing；In order to the screw thread of existing defects to be carried out chasing tool and/or the milling cutter 3 of Local treatment；In order to the screw thread of existing defects to be carried out the spiral interpolation processing instrument 4 of overall reparation；Wherein: Video Detection instrument 1, inside micrometer and/or go-no go gauge 2, chasing tool and/or milling cutter 3 and spiral interpolation processing instrument 4 are sequentially connected composition streamline.
Preferably, also include: be connected with inside micrometer and/or go-no go gauge 2 in order to the screw thread damage screwed hole Milling Machine 5 excised of section.
Preferably, spiral interpolation processing instrument 4 includes three-shaft linkage lathe 41 and the molding cutter 42 being arranged on three-shaft linkage lathe 41.
When being embodied as, Video Detection instrument 1 is that RV bolt hole is continuous, positions formula closed-circuit television somascope, and RV bolt hole is continuous, location formula closed-circuit television somascope includes interconnective display 11, recorder 12, photographing unit 13 and videocorder 14.RV bolt hole continuously, the whole thread surface of location formula closed-circuit television somascope 1 bolt hole each to reactor pressure vessel carry out continuously, position the Close Circuit Television (CCTV) inspection of formula, testing result information can carry out telescreen as requested to show, record, take a picture and record a video, thus provide foundation for its maintaining or maintenance.If existing defects, then recording the type of defect, size and location.
After, location formula closed-circuit television somascope continuous through RV bolt hole checks, if screw thread not existing defects or defect are within the acceptable range, perform the step of internal threads dimensional gaughing.Dimensional gaughing uses inside micrometer and go-no go gauge 2 to carry out.If dimensional gaughing is qualified, then without screw thread reparation；If off-dimension or screw thread existing defects, then need the concrete condition according to defect that screw thread is repaired.
Further, if the inspection data message of the continuous print on any one screwed hole surface of reactor pressure vessel, location formula is the first local defect information, use chasing tool that screwed hole is carried out combing；Wherein: use chasing tool that screwed hole is carried out combing and include: chaser uses the mode not removing fertile material, and cutter is close to original thread, is carried out the step of feed along original thread contour line.Still need to carry out the detection of video and go-no go gauge after screw thread combing, qualified to guarantee.
If after the inspection of the continuous print on the screwed hole surface of reacted core pressure vessel, location formula, find screw thread exist tiny burr, tiny subside, any one defect in tiny distortion and Superficial Foreign Body, by screwed hole Milling Machine 5, bolt hole is carried out milling to excise the thread segment of damaged.Bolt milling cutter uses the mode of local milling, i.e. local defect is carried out excision process.Needing before defect excision to be estimated excision screw thread impact, assessment no problem can carry out excising work, still needs to carry out video and size detection after screw thread excision, qualified to guarantee.If after the inspection of the continuous print on the screwed hole surface of reacted core pressure vessel, location formula, find screw thread exist subside, distort, any one defect in misrun and thread fracture time, it is possible to use spiral interpolation is processed instrument 4 and is carried out spiral interpolation processing to repair screw thread.Concrete, select to use molding cutter 42 supporting three-shaft linkage lathe 41 to carry out milling, after equipment installs centering, centered by screwed hole, carry out spiral interpolation along original thread path, different interpolation radiuses can be selected according to actual requirement.
Implement the nuclear power station tun of the present invention and the screw defects detection of equipment and restorative procedure and device, have the advantages that
First, Video Detection instrument, inside micrometer and/or go-no go gauge, chasing tool and/or milling cutter and spiral interpolation processing instrument are sequentially connected composition streamline, Video Detection instrument can obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula, and according to checking that data message judges any one screwed hole surface whether existing defects, inside micrometer and/or go-no go gauge are to being judged as that existing defects or the defect female thread in tolerance interval does not carries out dimensional gaughing, chasing tool and/or milling cutter are to judging that the female thread in tolerance interval is not repaired；Spiral interpolation processing instrument carries out overall reparation to the screw thread of existing defects, it is possible to for nuclear power station tun and the different defects of equipment, use different technique；Spiral interpolation miller artistic skill enough expands the scope that screw thread is repaired；Improve defects detection and the efficiency of reparation further, effectively reduce the raying dosage of workman.
The second, Video Detection instrument includes interconnective display, recorder, photographing unit and videocorder, can will check that result shows as requested, records, takes a picture and record, thus provide foundation for its maintaining or maintenance.
Claims (10)
1. a nuclear power station tun and the screw defects detection of equipment and restorative procedure, it is characterised in that comprise the following steps:
Obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the inspection data message of location formula, any one screwed hole surface described whether existing defects is judged according to described inspection data message, if the judgment is Yes, then the type of defect, size and location data message are recorded；If being judged as NO, then perform next step；
To being judged as that existing defects or the defect female thread in tolerance interval does not carries out dimensional gaughing, it is judged that check that result is the most qualified, if the judgment is Yes, then terminate；If the judgment is No, then the step that screw thread is repaired by the concrete condition according to defect is performed；
Screw thread to existing defects carries out the step of Local treatment；
Screw thread to existing defects carries out the step of overall reparation.
2. nuclear power station tun as claimed in claim 1 and the screw defects detection of equipment and restorative procedure, it is characterized in that, the continuous print on any one screwed hole surface of described acquisition reactor pressure vessel, the inspection data message of location formula include: screw thread exist tiny burr, tiny subside, the first local defect information of any one defect in tiny distortion and Superficial Foreign Body and screw thread exist subside, distort, any one defect in misrun and thread fracture, and second that this defect is local defect locally defect information.
3. nuclear power station tun as claimed in claim 2 and the screw defects detection of equipment and restorative procedure, it is characterised in that the described screw thread to existing defects carries out the step of Local treatment and includes:
When the continuous print on any one screwed hole surface of described acquisition reactor pressure vessel, the inspection data message of location formula are the first local defect information, use chasing tool that screwed hole is carried out combing；
When the continuous print on any one screwed hole surface of described acquisition reactor pressure vessel, the inspection data message of location formula are the second local defect information, use the thread segment of bolt hole milling process excision damaged.
4. nuclear power station tun as claimed in claim 3 and the screw defects detection of equipment and restorative procedure, it is characterized in that, described employing chasing tool carries out combing to screwed hole and includes: chaser uses the mode not removing fertile material, original thread is close to by cutter, carries out the step of feed along original thread contour line.
5. nuclear power station tun as described in any one of claim 1-4 and the screw defects detection of equipment and restorative procedure, it is characterised in that the described screw thread to existing defects carries out the step of overall reparation and includes:
The method using spiral interpolation processing screw thread repairs screw thread, the method selecting to use molding cutter supporting three-shaft linkage lathe milling, after equipment installs centering, carries out spiral interpolation along original thread path centered by screwed hole, different interpolation radiuses can be selected according to actual requirement.
6. nuclear power station tun as claimed in claim 5 and the screw defects detection of equipment and restorative procedure, it is characterised in that also include after the step that the described screw thread to existing defects carries out overall reparation:
Check whether screwed hole surface still suffers from defect, after determining screw thread no significant defect, use the step that go-no go gauge measures.
7. a nuclear power station tun and the screw defects detection of equipment and prosthetic device, it is characterised in that including: in order to obtain the continuous print on any one screwed hole surface of reactor pressure vessel, the Video Detection instrument checking data message of location formula；
In order to being judged as that not existing defects or the defect female thread in tolerance interval carries out inside micrometer and/or the go-no go gauge of dimensional gaughing；
In order to the screw thread of existing defects to be carried out chasing tool and/or the milling cutter of Local treatment；
In order to the screw thread of existing defects to be carried out the spiral interpolation processing instrument of overall reparation；Wherein: described Video Detection instrument, described inside micrometer and/or go-no go gauge, described chasing tool and/or milling cutter and described spiral interpolation processing instrument are sequentially connected composition streamline.
8. nuclear power station tun as claimed in claim 7 and the screw defects detection of equipment and prosthetic device, it is characterized in that, described Video Detection instrument is that RV bolt hole is continuous, positions formula closed-circuit television somascope, and described RV bolt hole is continuous, location formula closed-circuit television somascope includes interconnective display, recorder, photographing unit and videocorder.
9. nuclear power station tun as claimed in claim 7 and the screw defects detection of equipment and prosthetic device, it is characterised in that also include:
Be connected with described inside micrometer and/or described go-no go gauge in order to the screw thread damage screwed hole Milling Machine excised of section.
10. nuclear power station tun as claimed in claim 7 and the screw defects detection of equipment and prosthetic device, it is characterised in that described spiral interpolation processing instrument includes three-shaft linkage lathe and the molding cutter being arranged on described three-shaft linkage lathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314895.5A CN105817831B (en) | 2016-05-13 | 2016-05-13 | The screw hole defects detection and restorative procedure of nuclear power station large container and equipment, device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610314895.5A CN105817831B (en) | 2016-05-13 | 2016-05-13 | The screw hole defects detection and restorative procedure of nuclear power station large container and equipment, device |
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| CN105817831B CN105817831B (en) | 2018-07-10 |
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| CN108000048A (en) * | 2016-11-01 | 2018-05-08 | 三门核电有限公司 | A kind of online restorative procedure of main screw hole of reactor pressure vessel flange |
| CN112045364A (en) * | 2020-08-25 | 2020-12-08 | 上海核工程研究设计院有限公司 | Method for repairing J-shaped welding seam of pressure boundary of nuclear-grade small-diameter penetration piece |
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| Publication number | Publication date |
|---|---|
| CN105817831B (en) | 2018-07-10 |
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