CN116412754A - Ultrasonic and video inspection device for guide clamping holes of control rod guide cylinder - Google Patents
Ultrasonic and video inspection device for guide clamping holes of control rod guide cylinder Download PDFInfo
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- CN116412754A CN116412754A CN202111656813.2A CN202111656813A CN116412754A CN 116412754 A CN116412754 A CN 116412754A CN 202111656813 A CN202111656813 A CN 202111656813A CN 116412754 A CN116412754 A CN 116412754A
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- 238000007689 inspection Methods 0.000 title claims abstract description 113
- 239000000523 sample Substances 0.000 claims abstract description 77
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000005299 abrasion Methods 0.000 claims abstract description 13
- 230000033001 locomotion Effects 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 244000309464 bull Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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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
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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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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Abstract
This patent belongs to the nondestructive test field, concretely relates to control rod guide cylinder direction card hole supersound, video inspection device. The device comprises a probe guide rod assembly and an inspection positioning and driving assembly, wherein the probe guide rod assembly penetrates through a central hole in the inspection positioning and driving assembly, and is in meshed connection with a gear. The inspection positioning and driving assembly consists of an inspection positioning and clamping assembly, a rotation and lifting fixing seat assembly, a motor sealing assembly and a lifting driving assembly, wherein the inspection positioning and driving assembly is positioned at the bottom of the device, and the upper surface of the inspection positioning and driving assembly is fixedly connected with the rotation and lifting fixing seat assembly; the motor sealing assembly and the lifting driving assembly are fixed on the rotating and lifting fixing seat assembly through bolt connection. The abrasion loss detection of 24 guide clamping holes on each layer of guide plates of the control rod guide cylinder in the upper part of the nuclear power station reactor can be realized.
Description
Technical Field
This patent belongs to the nondestructive test field, concretely relates to control rod guide cylinder direction card hole supersound, video inspection device.
Background
The reactor pressure vessel internal component of the nuclear power station is one of important devices in the reactor body structure, is arranged in the reactor pressure vessel, and is combined with the reactor pressure vessel, the control rod driving mechanism, the fuel assembly, the related components and the like to realize the reactor function. The internals provide support, positioning and guidance for the fuel assemblies and control rod assemblies and direct coolant flow through the core, distributing flow appropriately, and are structurally divided into upper internals, lower internals, compression spring rings, and deflector shroud assemblies, etc.
The upper internal reactor component consists of an upper supporting plate component, a supporting column component, a guide cylinder component, an upper reactor core plate, an in-reactor measuring grid and the like, realizes the guiding and centering of the up-and-down movement in the reactor of the control rod component, and provides a channel for various measuring instruments of neutron flux and outlet temperature of the reactor core.
The guide cylinder assembly plays a role in guiding and centering for controlling the rod assembly to move up and down in the pile, and mainly comprises an upper guide cylinder assembly and a lower guide cylinder assembly. The bottom of the upper guide cylinder assembly and the top of the lower guide cylinder assembly are fixed on the upper support plate assembly and are connected into a whole through a flange, and the lower guide cylinder assembly is limited on the reactor core upper plate through two locating pins at the bottom, so that the positioning and the supporting are realized. The guide cylinder component is internally provided with 9 guide plates for controlling the positioning and guiding of the bar bundle component during bar dropping. The center of the top end of the control rod guide cylinder assembly is provided with a phi 58.65 round hole for the lifting movement of the grabbing mechanism, and the bottom continuous section is of a combined structure of a regular opening and a chute.
The guide plate is used for positioning and guiding the control rod and providing support to prevent the control rod from excessively deforming caused by water flow vibration, and the guide plate is provided with 24 phi 10.725mm round holes and a center phi 61mm round hole according to the structure of the control rod.
The abrasion of the control rod guide cylinder guide card Kong Pubian running for a certain period number is influenced by multiple factors such as frequent up-and-down movement of the control rod during the running of the reactor and micro-vibration caused by high-speed water flow, and the abrasion can cause the control rod to be blocked, so that the safe running of the nuclear power station is influenced, and therefore, an ultrasonic and video inspection device aiming at the abrasion of the guide card hole of the control rod guide cylinder is necessary to develop, and the abrasion quantity detection technical capability of the guide card hole is formed.
Disclosure of Invention
1. The purpose is as follows:
the patent aims to design a control rod guide cylinder guide clamping hole ultrasonic and video inspection device so as to realize detection of abrasion loss of 24 guide clamping holes on each layer of guide plates of the control rod guide cylinder in the upper part of the nuclear power station reactor.
2. The technical scheme is as follows:
the ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder comprises a probe guide rod assembly and an inspection positioning and driving assembly, wherein the probe guide rod assembly penetrates through a central hole in the inspection positioning and driving assembly, and gears are in meshed connection.
The inspection positioning and driving assembly consists of an inspection positioning and clamping assembly, a rotation and lifting fixing seat assembly, a motor sealing assembly and a lifting driving assembly, wherein the inspection positioning and driving assembly is positioned at the bottom of the device, and the upper surface of the inspection positioning and driving assembly is fixedly connected with the rotation and lifting fixing seat assembly; the motor sealing assembly and the lifting driving assembly are fixed on the rotating and lifting fixing seat assembly through bolt connection.
The checking, positioning and clamping assembly comprises an upper positioning cylinder, a positioning and locking oblique block, a positioning and locking guide bar, a circumferential driving large gear ring, a rotary ring and a clamping double-acting cylinder; the inner diameter of the upper positioning cylinder body is 5-20 mm larger than the diameter of the outer circle of the upper part of the guide cylinder to be detected, and the anti-rotating rod bulge at the upper end of the guide cylinder to be detected is matched with the two circumferential limiting holes; the positioning locking cylinder is arranged at the outer side of the upper positioning cylinder and is matched with the two sliding grooves at the inner side of the positioning locking guide bar by two positioning locking guide bars arranged at the outer side of the upper positioning cylinder.
The upper positioning cylinder is of a cylinder structure with an opening at the lower part, a disc structure with a central opening at the upper part, and two circumference limiting holes at the top of the disc; four positioning locking oblique blocks and two positioning locking guide bars are uniformly distributed on the upper positioning cylinder in the circumferential direction, and the four positioning locking oblique blocks are synchronously unfolded and folded under the action of the positioning locking cylinder.
The positioning locking cylinder is of a cylinder structure with a cone section at the lower part; the up-and-down sliding movement of the positioning locking cylinder relative to the upper positioning cylinder is driven by a clamping double-acting cylinder.
The positioning locking oblique block is of a strip structure, one surface of the positioning locking oblique block is a plane, the other surface of the positioning locking oblique block is provided with an oblique plane with a certain inclination, the upper part of the positioning locking oblique block is provided with a pin hole, and the positioning locking oblique block is installed and fixed on the outer side of the upper positioning cylinder through a pin; the plane side of the positioning locking oblique block is contacted with the cone section cylinder body on the inner surface of the positioning locking cylinder.
The circumferential driving large gear ring is a gear ring structure with a central hole and teeth on the outer ring, is arranged on the rotary ring through a step hole in the center of the gear ring, and is arranged and fixed on the upper part of the upper positioning cylinder together with the rotary ring through bolts.
The rotary ring comprises an outer ring, an inner ring and a sliding bearing ring; the outer ring of the rotary ring is of an annular structure and is fixed on the upper positioning cylinder together with the circumferential driving large gear ring through bolt holes on the outer ring of the rotary ring.
The inner ring of the rotary ring is a concave-shaped replacement structure formed by splicing two blocks, and is connected with the rotary and lifting fixing seat assembly through bolts, so that relative rotation relative to the outer ring of the rotary ring is realized.
The sliding bearing ring is made of self-lubricating plastic.
The rotary and lifting fixing seat assembly is connected with the inner ring of the rotary ring through bolts and comprises a rotary fixing seat, a rotary output shaft, a rotary pinion, a rotary and lifting seat connecting cylinder, a lifting fixing seat, a lifting guide bar and a lifting linear bearing.
The rotary fixing seat is used for connecting the rotary and lifting fixing seat assembly with the rotary ring and is used as a mounting base of a rotary output shaft, a rotary and lifting connecting cylinder and a lifting linear bearing; the rotary output shaft is arranged on the rotary fixing seat through a rolling bearing, and the lower end of the rotary output shaft is provided with a rotary pinion.
The rotating and lifting seat connecting cylinder is respectively connected with the rotating fixing seat and the lifting fixing seat, lifting sliding friction of the probe guide rod assembly is realized through two lifting linear bearings which are arranged up and down, and the probe guide rod assembly and the detected guide cylinder are coaxial; and a lifting guide strip is arranged on the lifting fixing seat.
The motor sealing assembly is waterproof and sealed outside and comprises a motor seat, a driving motor and a motor cover; the motor base is respectively arranged on the rotary fixing base and the lifting fixing base; the driving motor is arranged on the motor seat through bolts; the motor cover is of a thin-wall hollow cylindrical structure with one end provided with a bottom, is connected with the motor seat through bolts, and realizes waterproof sealing in a radial compression mode of an O-shaped ring.
The lifting driving assembly is used for driving the lifting movement of the probe guide rod assembly and is arranged on the lifting fixing seat through bolts and pins; the lifting driving assembly mainly comprises a lifting driving mounting seat, a lifting driving gear shaft, a pair of bevel gears, a motor sealing assembly gear shaft and a bevel gear cover.
The probe guide rod assembly mainly comprises a central guide rod, a lifting driving rack, a lifting guide chute and a test probe assembly, wherein the central guide rod is a central rod body, and the outer surface of the central guide rod is matched with a lifting linear bearing to form a sliding bearing; the upper outer surface of the central guide rod is provided with a lifting guide chute which is attached to two side surfaces of a lifting guide strip on the rotary and lifting fixing seat assembly; the upper end of the central guide rod is provided with a lifting lug bolt.
The lifting driving rack is arranged on one side of the central guide rod through a bolt and is meshed with a lifting driving gear on the lifting driving assembly to drive the probe guide rod assembly to move up and down.
When the ultrasonic test is implemented, the test probe assembly is required to be positioned in the guide clamping hole, and the abrasion measurement is carried out on the inner surface of the guide clamping hole; when video inspection is implemented, the inspection probe assembly is positioned above the guide clamping hole, and the inner surface profile of the guide clamping hole is measured to obtain the inner surface abrasion loss.
3. Effects of
The ultrasonic and video inspection device is coaxially limited relative to the inspected guide cylinder by adopting a locking mechanism driven by an air cylinder, the ultrasonic and video inspection probes move up and down on each layer of guide plates of the guide cylinder through axial movement of the probe guide rod assembly, and the inspection full coverage of 24 guide clamping holes is realized through circumferential movement of the probe guide rod assembly;
the clamping double-acting cylinder is adopted to drive the positioning locking cylinder to move up and down, so that the synchronous and same-force pressing action of the inner surface of the positioning locking cylinder on the outer surfaces of the four positioning locking oblique blocks is caused, the positioning of the inspection device and the probe guide rod assembly relative to the axis of the inspected guide cylinder is realized, the probe guide rod assembly can pass through the center holes among all layers of guide plates, and all inspection probes are overlapped relative to the center of the guide clamping holes, and the inspection precision is improved;
the probe guide rod assembly and the inspection probe are circumferentially rotated relative to the inspected guide cylinder through the kneading of the rotary pinion and a gear of a circumferentially rotating bull gear fixed on the inspection positioning and clamping assembly;
the probe guide rod assembly and the inspection probe are axially lifted relative to the inspected guide cylinder through the engagement of the lifting driving gear on the lifting driving assembly and the gear rack of the lifting driving rack on the probe guide rod assembly.
Drawings
FIG. 1 is a general diagram of a control rod guide cylinder guide clamping hole inspection device
FIG. 2 is a perspective view of a control rod guide cartridge guide card hole inspection device
FIG. 3 is a general diagram of an inspection positioning and driving assembly
FIG. 4 is a cross-sectional view of the test positioning and drive assembly
FIG. 5 top view of the inspection positioning and drive assembly
FIG. 6 is a general view of the inspection positioning and clamping assembly
FIG. 7 rotary ring structure
FIG. 8 is a general view of a rotating and lifting mounting assembly
Fig. 9 is a general view of a motor seal assembly
FIG. 10 is a general view of a lift drive assembly
FIG. 11 probe guide rod assembly structure
In the figure: 1. a probe guide rod assembly; 2. checking the positioning and driving assembly; 3. a control rod guide cylinder; 4. checking the positioning and clamping assembly; 5. rotating and lifting the fixing seat assembly; 6. a motor seal assembly; 7. a lifting driving assembly; 8. an upper positioning cylinder; 9. positioning a locking cylinder; 10. positioning and locking the oblique block; 11. positioning and locking the guide bar; 12. circumferentially driving the large gear ring; 13. a swivel ring; 14. clamping a double-acting cylinder; 15. a circumferential limit hole; 16, an outer ring; 17. an inner ring; 18. a sliding bearing block; 19. rotating the fixing seat; 20. rotating the output shaft; 21. a rotary pinion; 22. a rotary and lifting seat connecting cylinder; 23. lifting the fixing seat; 24. lifting guide strips; 25. lifting the linear bearing; 26. a motor base; 27. a driving motor; 28. a motor cover; 29. lifting drive mounting seats; 30. a lifting driving gear; 31. lifting the driving gear shaft; 32. bevel gears; 33. a motor seal assembly gear shaft; 34. a bevel gear cover; 35. a center guide rod; 36. lifting the driving rack; 37. lifting guide sliding grooves; 38. inspection probe assembly
Detailed Description
The ultrasonic and video inspection device for the guide clamping holes of the control rod guide cylinder is shown in fig. 1 and 2, and mainly comprises a probe guide rod assembly 1 and an inspection positioning and driving assembly 2. The probe guide rod assembly 1 passes through a central hole on the inspection positioning and driving assembly 2, radial fixation of the probe guide rod assembly is ensured by two sliding linear bearings which are arranged up and down, and gear/rack meshing is formed by a rack arranged on the probe guide rod assembly 1 and a gear arranged on the inspection positioning and driving assembly 2, so that up-and-down lifting movement of the probe guide rod assembly 1 on the inspection positioning and driving assembly is realized.
The inspection positioning and driving assembly 2 realizes the fixation and positioning of the ultrasonic and video inspection device of the guide clamping holes relative to the inspected guide cylinder, the up-and-down lifting movement of the probe guide rod assembly on the guide cylinder and the circumferential rotation movement around the axis of the guide cylinder, thereby realizing the inspection full coverage of the 9 layers of guide plates and 24 guide clamping holes of each layer of guide plates in the height direction in the guide cylinder.
The inspection positioning and driving assembly consists of an inspection positioning and clamping assembly 4, a rotation and lifting fixing seat assembly 5, 2 motor sealing assemblies 6 and a lifting driving assembly 7, and the overall structure of the inspection positioning and driving assembly is shown in figures 3, 4 and 5. The inspection positioning and clamping assembly 4 is connected and fixed with the rotation and lifting fixing seat assembly through bolts, the 1 motor sealing assembly 6 and the lifting driving assembly 7 are also fixed on the rotation and lifting fixing seat assembly 5 through bolts, and the other 1 motor sealing assembly 6 is fixed on the rotation and lifting fixing seat assembly 5 through pin positioning and bolt connection to drive the lifting driving gear to rotate.
The inspection positioning and clamping assembly 4 realizes the positioning and fixing of the whole set of inspection device on the upper part of the inspected guide cylinder, and the positioning accuracy directly influences whether the subsequent probe guide rod assembly can pass through the center hole of each layer of guide plate and whether each inspection probe is positioned in the center of the inspected guide clamping hole, so that the smooth implementation of the inspection process and the measurement accuracy of the abrasion of the guide clamping hole are influenced, and therefore, the positioning accuracy of the inspection device has higher requirements. The inspection positioning and clamping assembly 4 consists of an upper positioning cylinder 8, a positioning and locking cylinder 9, a positioning and locking oblique block 10, a positioning and locking guide bar 11, a circumferential driving large gear ring 12, a rotary ring 13, a clamping double-acting cylinder 14 and other parts, and the structure of the inspection positioning and clamping assembly is shown in figure 6.
The upper positioning cylinder 8 is of a cylinder structure with an opening at the lower part, a disc structure with a central opening at the upper part, and two circumference limiting holes 15 at the top of the disc. The inner diameter of the upper positioning cylinder 8 is 5-20 mm larger than the outer diameter of the upper outer circle of the guide cylinder to be detected, so that the guide cylinder to be detected can be remotely inserted into the cylinder of the upper positioning cylinder 8 under water, and then the upper positioning cylinder 8 and the whole detection device are positioned and fixed in the circumferential direction relative to the guide cylinder to be detected through the protruding matching of the anti-rotating rod at the upper end of the guide cylinder and the two circumferential limiting holes 15.
The positioning and locking cylinder 9 is of a cylinder structure with a cone section at the lower part, is arranged at the outer side of the upper positioning cylinder 8, and is matched with two sliding grooves at the inner side of the positioning and locking cylinder 9 through two positioning and locking guide strips 11 arranged at the outer side of the upper positioning cylinder 8, so that the positioning and locking cylinder 9 can slide up and down relative to the upper positioning cylinder 8. The up and down sliding movement of the positioning locking cylinder 9 relative to the upper positioning cylinder 8 is driven by a clamping double-acting cylinder 14.
The positioning and locking oblique block 10 is of a strip structure, one surface of the positioning and locking oblique block is a plane, the other surface of the positioning and locking oblique block is provided with an oblique plane with a certain inclination, the upper part of the positioning and locking oblique block is provided with a pin hole, and the positioning and locking oblique block is installed and fixed on the outer side of the upper positioning cylinder 8 through a pin. After the installation is completed, the plane side of the positioning and locking inclined block 10 is contacted with the cone section cylinder body on the inner surface of the positioning and locking cylinder 9, and the positioning and locking inclined block 10 swings around the upper pin hole through the up-and-down sliding of the positioning and locking cylinder 9, so that the inner inclined surface of the positioning and locking inclined block is attached to and tightly pressed against the outer surface of the upper positioning cylinder 8.
Four positioning locking oblique blocks 10 and two positioning locking guide bars 11 are uniformly distributed on the upper positioning cylinder 8 in the circumferential direction, and the four positioning locking oblique blocks 10 are synchronously unfolded and folded under the action of the positioning locking cylinder 9, so that the coaxiality of the axis of the upper positioning cylinder 8 and the axis of the guide cylinder to be detected after folding is realized, and the installation positions and the detection precision of each detection probe and the guide clamping hole to be detected on the probe guide rod assembly 1 are ensured.
The large circumferential driving gear ring 12 is a gear ring structure with a central hole and teeth on the outer ring, is arranged on the rotary ring 13 through a central step hole, and is arranged and fixed on the upper part of the upper positioning cylinder 8 together with the rotary ring 13 through bolts.
As shown in fig. 7, the swivel ring 13 realizes a sliding bearing for rotating and lifting the fixing seat assembly 5 and the probe guide rod assembly 1 thereon relative to the inspection positioning and clamping assembly 4 and the radial centering, axial limiting and circumferential rotation of the inspected guide cylinder. The rotary ring 13 is composed of an outer ring 16, an inner ring 17, a slide bearing ring 18, and the like, and the structure thereof is shown in fig. 7. The rotary ring outer ring 16 is of an annular structure and is fixed to the upper positioning cylinder 8 together with the circumferential drive ring gear 12 through bolt holes formed therein. The inner ring 17 of the rotary ring is a concave-shaped replacement structure formed by splicing two blocks, and is connected with the rotary and lifting fixing seat assembly 5 through bolts so as to realize relative rotation relative to the outer ring 16 of the rotary ring. The sliding bearing ring 17 is made of self-lubricating plastic, so that circumferential rotation lubrication and axial limiting between the rotary ring outer ring 16 and the rotary ring inner ring 17 are realized.
As shown in fig. 8, the rotation and lifting fixing base assembly 5 is connected with the inner ring 17 of the rotary ring through bolts, so as to realize the lifting motion guiding and rotation driving of the probe guide rod assembly 1 and the inspection probe mounted thereon, and the structure of the rotation and lifting fixing base assembly mainly comprises a rotation fixing base 19, a rotation output shaft 20, a rotation pinion 21, a rotation and lifting base connecting cylinder 22, a lifting fixing base 23, a lifting guide strip 24, a lifting linear bearing 25 and the like, as shown in fig. 8.
The rotation fixing base 19 is used to connect the rotation and lifting fixing base assembly 5 with the rotary ring 13, and is a mounting base of the rotation output shaft 20, the rotation and lifting connecting cylinder 22, and the lifting linear bearing 25. The rotary output shaft 20 is mounted on the rotary fixing base 19 through a rolling bearing, and a rotary pinion 21 is mounted at the lower end thereof. The rotary output shaft 20 and the rotary pinion 21 are connected by keys to realize torque transmission, and are axially fixed by shaft shoulders and end bolts. After the rotary fixing seat 19 is mounted on the rotary ring 13, the rotary pinion 21 is meshed with the circumferential driving bull gear 12 to form gear engagement, and the rotary output shaft 20 and the rotary pinion 21 are driven by a motor to rotate, so that the circumferential rotation of the rotary and lifting fixing seat assembly 5 is realized, and the probe guide rod assembly 1 and the test probe thereon are driven to rotate circumferentially.
The rotary and lifting seat connecting cylinder 22 is respectively connected with the rotary fixing seat 19 and the lifting fixing seat 23, and realizes lifting sliding friction of the probe guide rod assembly 1 through two lifting linear bearings 25 arranged up and down, and the probe guide rod assembly 1 and the tested guide cylinder are coaxial. In order to prevent the probe guide rod assembly 1 from rotating on the lifting linear bearing 25, a lifting guide bar 24 is arranged on the lifting fixing seat 23, and the lifting guide bar is matched with a chute on the probe guide rod assembly 1 to guide the lifting movement of the probe guide rod assembly 1.
The motor sealing assembly 6 is used for driving the probe guide rod assembly 1 to axially lift and circumferentially rotate. When the ultrasonic and video inspection is carried out on the guide cylinder, the inspection device is positioned below the water surface in the reactor pool, so that a waterproof sealing structure is needed. As shown in fig. 9, the motor sealing assembly is composed of a motor housing 26, a driving motor 27, a motor cover 28, and the like. Two motor cabinet 26 are installed respectively on rotatory fixing base 19, lift fixing base 23, realize motor seal assembly 6 and rotatory and lift fixing base assembly 5's connection. The driving motor 27 is mounted on the motor housing 26 by bolts. The motor cover 28 is of a thin-wall hollow cylindrical structure with one end provided with a bottom, so that the driving motor 27 is waterproof sealed, the motor cover 28 is connected with the motor base 26 through bolts, and the waterproof sealing is realized in a radial compression mode of an O-shaped ring.
The lifting driving component 7 is used for driving the lifting motion of the probe guide rod component 1 and is installed on the lifting fixing seat 23 through bolts and pins. The lift drive assembly 7 is mainly composed of a lift drive mount 29, a lift drive gear 30, a lift drive gear shaft 31, a pair of bevel gears 32, a motor seal assembly gear shaft 33, a bevel gear cover 34, and the like, and its structure is shown in fig. 10.
The lifting drive mounting seat 29 is mounted on the lifting fixing seat 23 through bolts and pins and is a mounting frame for all parts on the lifting drive assembly 7. The lifting drive gear 30 is a straight-tooth cylindrical gear, is mounted on the lifting drive gear shaft 31, transmits torque through key connection, and is meshed with a rack mounted on the probe guide rod assembly 1, so that lifting movement of the probe guide rod assembly is realized. A pair of bevel gears 32 are mounted on the lift drive gear shaft 31 and the motor seal assembly gear shaft 33, respectively, to transfer motion and torque on the motor seal assembly gear shaft 33 to the lift drive gear shaft. The bevel gear cover is of a thin-wall cavity structure and is arranged on the lifting drive mounting seat through bolts, so that foreign matters are prevented from being clamped during meshing movement of the bevel gears.
The probe guide rod assembly 1 mainly comprises a central guide rod 35, a lifting driving rack 36, a lifting guide chute 37, a test probe assembly 38 and the like, and realizes the ultrasonic and video test of the axis lifting and circumferential rotation of the test probe in the tested guide cylinder, the opening and closing of the probe and the guide clamping hole. The probe guide rod assembly structure is shown in fig. 11.
As shown in fig. 11, the center guide rod 35 is a center rod body, and the outer surface of the center rod body is matched with the lifting linear bearing 25 by a sliding bearing, so that the up-and-down lifting movement of the inspection probe assembly 38 in the inspected guide cylinder is realized. And the upper end of the central guide rod is provided with a lifting lug bolt for integral lifting of the ultrasonic and video inspection device. The lifting drive rack 36 is mounted on one side of the central guide rod 35 through a bolt and is meshed with the lifting drive gear 30 on the lifting drive assembly 7, so that the lifting movement of the probe guide rod assembly 1 is realized. When the probe guide rod assembly 1 is lifted, in order to avoid rotation, the upper outer surface of the central guide rod 35 is provided with a lifting guide chute 37, and the chute is attached to two side surfaces of the lifting guide strip 24 on the rotation and lifting fixing seat assembly 5 so as to ensure the circumferential position of the probe guide rod assembly 1 and prevent rotation.
The inspection probe assembly 38 is used for realizing ultrasonic and video inspection of the guide card hole of the inspected guide cylinder, and different inspection probes can be selected according to different inspection requirements, and corresponding inspection positions are different. When the ultrasonic test is implemented, the test probe is required to be positioned in the guide clamping hole, and the abrasion measurement is carried out on the inner surface of the guide clamping hole; when video inspection is implemented, the inspection probe is positioned above the guide clamping hole, and the inner surface profile of the guide clamping hole is measured to obtain the inner surface abrasion loss.
When the control rod guide cylinder guide clamping hole is inspected, firstly, an ultrasonic and video inspection device is sent to the position right above a first inspected guide cylinder through an inner ring crane of a nuclear power station, then the ultrasonic and video inspection device is slowly put down until the upper part of the inspected guide cylinder is inserted into an inner hole of an upper positioning cylinder, then the positioning and locking cylinder moves downwards under the action of a cylinder with clamping action, and the inner surface of a pressing positioning and locking inclined block is pressed against the outer wall of the inspected guide cylinder, so that the inspection device and a probe guide rod assembly are kept at the center of the inspected guide cylinder. And then the lifting driving assembly drives the probe guide rod assembly and each inspection probe to descend to the position above each layer of guide plate under the action of the driving motor, and the rotary pinion drives each inspection probe on the probe guide rod assembly to rotate to the coaxial position of the inspected guide clamping hole under the action of the driving motor, so that ultrasonic and video inspection is started to be implemented.
Claims (18)
1. A control rod guide cylinder guide clamping hole ultrasonic and video inspection device is characterized in that: the probe guide rod assembly (1) penetrates through a central hole in the test positioning and driving assembly (2), and is in gear meshing connection.
2. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 1 is characterized in that: the inspection positioning and driving assembly (2) consists of an inspection positioning and clamping assembly (4), a rotation and lifting fixing seat assembly (5), a motor sealing assembly (6) and a lifting driving assembly (7), wherein the inspection positioning and driving assembly (4) is positioned at the bottom of the device, and the upper surface of the inspection positioning and driving assembly is fixedly connected with the rotation and lifting fixing seat assembly (5); the motor sealing assembly (6) and the lifting driving assembly (7) are fixed on the rotating and lifting fixing seat assembly (5) through bolt connection.
3. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 2, wherein the ultrasonic and video inspection device is characterized in that: the checking, positioning and clamping assembly (4) comprises an upper positioning cylinder (8), a positioning and locking cylinder (9), a positioning and locking oblique block (10), a positioning and locking guide bar (11), a circumferential driving large gear ring (12), a rotary ring (13) and a clamping double-acting cylinder (14); the inner diameter of the cylinder body of the upper positioning cylinder (8) is 5-20 mm larger than the diameter of the outer circle of the upper part of the guide cylinder to be detected, and the anti-rotating rod bulge at the upper end of the guide cylinder to be detected is matched with two circumference limiting holes (15); the positioning and locking cylinder (9) is arranged at the outer side of the upper positioning cylinder (8) and is matched with the two sliding grooves at the inner side of the upper positioning cylinder (8) through two positioning and locking guide bars (11) arranged at the outer side of the upper positioning cylinder.
4. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 3, wherein the ultrasonic and video inspection device is characterized in that: the upper positioning cylinder (8) is of a cylinder structure with an opening at the lower part, the upper part is provided with a disc structure with a central opening, and the top of the disc is provided with two circumference limiting holes (15); four positioning and locking oblique blocks (10) and two positioning and locking guide bars (11) are uniformly distributed on the upper positioning cylinder (8) in the circumferential direction, and the four positioning and locking oblique blocks (10) are synchronously unfolded and folded under the action of the positioning and locking cylinder (9).
5. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 3, wherein the ultrasonic and video inspection device is characterized in that: the positioning locking cylinder (9) is of a cylinder structure with a cone section at the lower part; the up and down sliding movement of the positioning locking cylinder (9) relative to the upper positioning cylinder (8) is driven by a clamping double-acting cylinder (14).
6. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 3, wherein the ultrasonic and video inspection device is characterized in that: the positioning and locking oblique block (10) is of a strip structure, one surface of the positioning and locking oblique block is a plane, the other surface of the positioning and locking oblique block is provided with an oblique plane with a certain inclination, the upper part of the positioning and locking oblique block is provided with a pin hole, and the positioning and locking oblique block is installed and fixed on the outer side of the upper positioning cylinder (8) through a pin; the plane side of the positioning locking oblique block (10) is contacted with the cone section cylinder body on the inner surface of the positioning locking cylinder (9).
7. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 3, wherein the ultrasonic and video inspection device is characterized in that: the circumferential driving large gear ring (12) is a gear ring structure with a central hole and teeth on the outer ring, is arranged on the rotary ring (13) through a step hole in the center of the gear ring structure, and is arranged and fixed on the upper part of the upper positioning cylinder (8) together with the rotary ring (13) through bolts.
8. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 7 is characterized in that: the rotary ring (13) comprises an outer ring (16), an inner ring (17) and a sliding bearing ring (18); the outer ring (16) of the rotary ring is of an annular structure and is fixed on the upper positioning cylinder (8) together with the circumferential driving large gear ring (12) through bolt holes on the outer ring.
9. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 8 is characterized in that: the inner ring (17) of the rotary ring is of a concave-shaped replacement structure formed by splicing two blocks, and is connected with the rotary and lifting fixing seat assembly (5) through bolts so as to realize relative rotation relative to the outer ring (16) of the rotary ring.
10. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 8 is characterized in that: the sliding bearing ring (18) is made of self-lubricating plastic.
11. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 2, wherein the ultrasonic and video inspection device is characterized in that: the rotary and lifting fixing seat assembly (5) is connected with the inner ring (17) of the rotary ring through bolts, and the rotary and lifting fixing seat assembly (5) comprises a rotary fixing seat (19), a rotary output shaft (20), a rotary pinion (21), a rotary and lifting seat connecting cylinder (22), a lifting fixing seat (23), a lifting guide bar (24) and a lifting linear bearing (25).
12. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 11, wherein the ultrasonic and video inspection device is characterized in that: the rotary fixing seat (19) is used for connecting the rotary and lifting fixing seat assembly (5) with the rotary ring (13) and is used as a mounting base of the rotary output shaft (20), the rotary and lifting connecting cylinder (22) and the lifting linear bearing (25); the rotary output shaft (20) is arranged on the rotary fixing seat (19) through a rolling bearing, and the lower end of the rotary output shaft is provided with a rotary pinion (21).
13. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 12, wherein the ultrasonic and video inspection device is characterized in that: the rotating and lifting seat connecting cylinder (22) is respectively connected with the rotating fixing seat (19) and the lifting fixing seat (23), lifting sliding friction of the probe guide rod assembly (1) is realized through two lifting linear bearings (25) which are arranged up and down, and the probe guide rod assembly (1) is coaxial with the guide cylinder to be detected; the lifting fixing seat (23) is provided with a lifting guide strip (24).
14. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 2, wherein the ultrasonic and video inspection device is characterized in that: the motor sealing assembly (6) is externally waterproof and sealed, and the motor sealing assembly (6) comprises a motor seat (26), a driving motor (27) and a motor cover (28); the motor base (26) is respectively arranged on the rotary fixing base (19) and the lifting fixing base (23); the driving motor (27) is arranged on the motor base (26) through bolts; the motor cover (28) is of a thin-wall hollow cylindrical structure with one end provided with a bottom, is connected with the motor base (26) through bolts, and realizes waterproof sealing in a radial compression mode of an O-shaped ring.
15. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 2, wherein the ultrasonic and video inspection device is characterized in that: the lifting driving assembly (7) is used for driving the lifting motion of the probe guide rod assembly (1) and is arranged on the lifting fixing seat (23) through bolts and pins; the lifting drive assembly (7) mainly comprises a lifting drive mounting seat (29), a lifting drive gear (30), a lifting drive gear shaft (31), a pair of bevel gears (32), a motor seal assembly gear shaft (33) and a bevel gear cover (34).
16. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 15, wherein the ultrasonic and video inspection device is characterized in that: the probe guide rod assembly (1) mainly comprises a central guide rod (35), a lifting driving rack (36), a lifting guide chute (37) and a test probe assembly (38), wherein the central guide rod (35) is a central rod body, and the outer surface of the central guide rod body is matched with a lifting linear bearing (25) to form a sliding bearing; the upper outer surface of the central guide rod (35) is provided with a lifting guide chute (37), and the chute is attached to two side surfaces of a lifting guide strip (24) on the rotary and lifting fixing seat assembly (5); the upper end of the center guide rod (35) is provided with a lifting lug bolt.
17. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 16, wherein the ultrasonic and video inspection device is characterized in that: the lifting driving rack (36) is arranged on one side of the central guide rod (35) through a bolt and is meshed with the lifting driving gear (30) on the lifting driving assembly (7) to drive the probe guide rod assembly (1) to move up and down.
18. The ultrasonic and video inspection device for the guide clamping hole of the control rod guide cylinder according to claim 16, wherein the ultrasonic and video inspection device is characterized in that: when ultrasonic inspection is carried out, the inspection probe assembly (38) needs to be positioned in the guide clamping hole, and abrasion measurement is carried out on the inner surface of the guide clamping hole; when video inspection is carried out, the inspection probe assembly (38) is positioned above the guide clamping hole, and the inner surface profile of the guide clamping hole is measured to obtain the inner surface abrasion loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111656813.2A CN116412754A (en) | 2021-12-31 | 2021-12-31 | Ultrasonic and video inspection device for guide clamping holes of control rod guide cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111656813.2A CN116412754A (en) | 2021-12-31 | 2021-12-31 | Ultrasonic and video inspection device for guide clamping holes of control rod guide cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116412754A true CN116412754A (en) | 2023-07-11 |
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ID=87049881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111656813.2A Pending CN116412754A (en) | 2021-12-31 | 2021-12-31 | Ultrasonic and video inspection device for guide clamping holes of control rod guide cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116412754A (en) |
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2021
- 2021-12-31 CN CN202111656813.2A patent/CN116412754A/en active Pending
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