CN115308300A - Boiler water wall pipe defect eddy current inspection device - Google Patents
Boiler water wall pipe defect eddy current inspection device Download PDFInfo
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- CN115308300A CN115308300A CN202211238424.2A CN202211238424A CN115308300A CN 115308300 A CN115308300 A CN 115308300A CN 202211238424 A CN202211238424 A CN 202211238424A CN 115308300 A CN115308300 A CN 115308300A
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- butt joint
- walking
- wall
- sides tight
- eddy current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9093—Arrangements for supporting the sensor; Combinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting
Abstract
The invention discloses a defect eddy current testing device for a boiler water wall pipe, which comprises a butt joint shell, wherein one end of the butt joint shell is provided with an automatic coil butt joint assembly, the butt joint shell is connected together through the automatic coil butt joint assembly, the middle part of the outer wall of the butt joint shell is provided with a butt joint clamping assembly, one end face of the butt joint shell is provided with a split butt joint type eddy current testing assembly, the butt joint clamping assembly is provided with an automatic pipe wall externally-cutting crawling mechanism, the automatic pipe wall externally-cutting crawling mechanism comprises an adaptive externally-cutting pressing assembly and a walking transmission assembly, the adaptive externally-cutting pressing assembly is arranged on the butt joint clamping assembly, and the walking transmission assembly is arranged on the adaptive externally-cutting pressing assembly. The invention belongs to the technical field of nondestructive testing, and particularly relates to a semi-open semi-annular detection coil which can complete detection without cutting a pipe, adopts an automatic crawling mechanism for pipe wall external cutting to automatically adapt to different pipe diameters, automatically crawls on the outer wall of the pipe wall, and automatically completes damage detection of a large water-cooled wall pipe.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing, and particularly relates to a defect eddy current testing device for a boiler water wall pipe.
Background
At present power plant boiler's water wall pipe works under high temperature and high pressure for a long time, if the inner wall produces and corrodes and lead to wall thickness attenuate or water wall pipe outer wall to appear the crackle, very easily takes place to reveal or the pipe explosion accident, causes huge economic loss or even causes the bodily injury, consequently needs regularly to detect boiler water wall pipe.
The eddy current inspection is a non-contact inspection mode, and is a method for performing inspection by using electromagnetic induction between an electromagnetic field and metal, and is one of industrial nondestructive inspection methods.
Therefore, a defect eddy current inspection device for a water wall tube of a boiler is needed to solve the above problems.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides the eddy current testing device for the defects of the water wall tube of the boiler, which adopts a semi-open type semi-annular detection coil, can complete the detection without cutting the tube, adopts an automatic tube wall externally-tangent crawling mechanism to automatically adapt to different tube diameters, automatically crawls on the outer wall of the tube wall, and completes the damage detection of the large water wall tube.
The technical scheme adopted by the invention is as follows: the invention provides a defect eddy current testing device for a boiler water wall tube, which comprises a butt joint shell, wherein the butt joint shell is arranged in a semi-annular shape, the butt joint shell is arranged in pairs, one end of the butt joint shell is provided with an automatic coil butt joint component, the butt joint shell is connected together through the automatic coil butt joint component, the middle part of the outer wall of the butt joint shell is provided with a butt joint clamping component, one end face of the butt joint shell is provided with a split butt joint type eddy current testing component, the butt joint clamping component is provided with an automatic tube wall externally-cutting crawling mechanism, the automatic tube wall externally-cutting crawling mechanism comprises an adaptive externally-cutting pressing component and a walking transmission component, the adaptive externally-cutting pressing component is arranged on the butt joint clamping component, and the walking transmission component is arranged on the adaptive externally-cutting pressing component.
In order to satisfy the centre gripping to unidimensional water-cooling wall pipe, butt joint clamping components is including pressing from both sides tight two-way threaded rod, pressing from both sides tight movable sliding block, pressing from both sides tight motor, pressing from both sides tight bracing piece and pressing from both sides tight fixed cover, butt joint casing lateral wall middle part is equipped with along the axial and presss from both sides tight spout, press from both sides tight two-way threaded rod and locate in pressing from both sides tight spout, press from both sides tight movable sliding block symmetry and locate in pressing from both sides tight spout, press from both sides tight movable sliding block and locate on pressing from both sides tight two-way threaded rod, press from both sides the level of the one end of tight bracing piece and articulate and locate the one end lateral wall that presss from both sides tight fixed cover, press from both sides tight motor and locate butt joint casing terminal surface outer wall, press from both sides tight motor and press from both sides tight two-way threaded rod with and be connected.
Preferably, split dock eddy current testing subassembly includes coil semi-ring fixation body, semi-ring detection coil, connection reed and spliced pole, butt joint casing one end terminal surface is located to the coil semi-ring fixation body, the semi-ring detection coil is located in the coil semi-ring fixation body, and the one end terminal surface of one of them coil semi-ring fixation body is equipped with the coil butt joint groove, it is the setting of L type to connect the reed, connect the reed butt joint and locate the coil butt joint inslot wall, the spliced pole is located the one end terminal surface of another coil semi-ring fixation body, cuts apart into two semi-ring detection coils with the detection coil, need not cut the pipe, overlaps the semi-ring detection coil on the water wall pipe, and then links together the semi-ring detection coil, constitutes whole detection coil, detects the water wall pipe damage.
In order to realize that semi-annular detection coil combination links together, the automatic butt joint subassembly of coil includes support frame, intermediate lamella, rotation handle, connecting plate, butt joint rack, butt joint gear, butt joint rotation axis, deflector, linkage threaded rod and linkage plate, the one end symmetry of butt joint casing is equipped with the spread groove, the butt joint rotation axis is located between the spread groove inside wall, the both ends of connecting plate rotate respectively and locate on the butt joint rotation axis, the butt joint casing links together through the connecting plate, the support frame is the setting of falling the U-shaped, the support frame symmetry is located on two connecting plates, the fixed one side lateral wall of locating the spread groove of butt joint gear, the butt joint gear rotates and locates on the butt joint rotation axis, the butt joint rack is located the connecting plate inside wall, butt joint rack and butt joint gear meshing, the deflector is the setting of L type, the lateral wall of butt joint rack is located to the upper end of deflector, the deflector runs through the connecting plate upper wall, the upper end of two butt joint racks is located at the both ends of linkage plate, the intermediate lamella is located between the upper portion inside wall of two support frames, the linkage threaded rod runs through intermediate lamella and linkage plate, linkage threaded rod passes through threaded rod and linkage plate through threaded rod, and linkage plate can drive the linkage rack and the locking that the linkage rack that links up and reciprocate.
Preferably, the self-adaptive externally-tangent compressing assembly comprises supporting plates, connecting rotating shafts and a connecting fixing shaft, the supporting plates are arranged in pairs, one side wall of one supporting plate is provided with a rotating block, the side wall of one end of the other supporting plate is provided with a rotating groove, the rotating groove is formed in the rotating block, the connecting rotating shafts penetrate through the rotating block and the rotating groove, the two supporting plates are connected together through the connecting rotating shafts, the connecting rotating shafts penetrate through the clamping fixing sleeves, the supporting plates and the connecting rotating shafts are connected through torsion springs, the two supporting plates are combined together, the two supporting plates can change the angle between the two supporting plates according to the pipe diameter of the water wall pipe, the requirement that the walking wheels are positively pressed on the water wall pipe is met, the connecting fixing shaft is arranged between the side walls of the supporting plates, and the two supporting plates on the same side can be connected together.
Preferably, the walking drive subassembly includes walking drive worm, walking drive worm wheel, connects the transfer line, connects the driving plate, belt drive wheel, walking belt, walking rotation axis, walking wheel, linkage belt pulley, the driven gear that crawls, crawl driving gear, the rotating electrical machines that crawls, apron and initiative rotation axis, it locates the backup pad upper wall to connect the driving plate, the backup pad lateral wall is located to the walking drive worm, it runs through and locates connection driving plate lateral wall middle part to connect the transfer line, walking drive worm wheel locates the one end of connecting the transfer line, walking drive worm wheel and the meshing of walking drive worm, the belt drive wheel is located the other end of connecting the transfer line, the lateral wall of backup pad is equipped with the walking standing groove, the walking rotation axis is located between the walking standing groove inside wall, the walking wheel symmetry is located on the walking rotation axis, and is examined time measuring to the water-cooling wall pipe, and the walking wheel is on the water-cooling wall pipe outer wall, the linkage belt is located on the walking rotation axis, the linkage belt locates between the walking wheel, the walking belt is located on the walking belt pulley, the walking belt is located on the linkage belt pulley and the belt and the driving belt and driving gear and the driving shaft of crawling, the one end of crawling driving motor is located in the motor standing groove, the motor of crawling driving drive shaft of crawling the motor of crawling.
Furthermore, the diameter size of the walking rotating shaft is larger than the thickness size of the supporting plate, so that the walking belt is prevented from interfering with the supporting plate when the walking belt is driven on the linkage belt pulley and the belt transmission wheel.
In order to make the connection reed and the better connection of spliced pole together, the middle part inside wall of connection reed is equipped with the draw-in groove, draw-in groove and spliced pole cooperation, the upper end of connecting the reed leans out.
One end of one of the semi-annular detection coils is connected with the connecting column, and the other end of the semi-annular detection coil is connected with the connecting reed, so that the two annular detection coils are connected together.
The included angle between the supporting plates is fixed according to the pipe diameter of the water wall pipe, a locking screw II is arranged on the outer wall of the rotating block, and a locking screw I is arranged at one end of the supporting plate close to the rotating groove.
The invention adopting the structure has the following beneficial effects:
1. in the automatic coil butt joint assembly, an eddy current detection coil is divided into two semi-annular detection coils which are fixed on a semi-annular coil fixing body, a linkage threaded rod drives a linkage plate and a butt joint rack to move up and down, the butt joint rack drives a butt joint gear to rotate forward and backward so as to drive a butt joint shell to open and close and further drive the semi-annular detection coils to separate and butt joint, one end of one of the semi-annular detection coils is connected with a connecting column, one end of the other semi-annular detection coil is connected with a connecting reed so as to close and open the two semi-annular detection coils, and therefore damage detection of the eddy current detection coil on a water wall tube is completed without cutting the tube;
2. in the pipe wall external-cutting automatic crawling mechanism, a support plate acts on a connecting rotating shaft through a torsional spring, the support plates on two sides are in a mutually-fitted state, when a water-cooled wall pipe is positioned between the support plates, a walking wheel automatically clamps the water-cooled wall pipe, a clamping motor is adjusted, a clamping bidirectional threaded rod drives a clamping moving slide block to move in opposite directions or in reverse directions, a clamping support rod pushes the support plates to move, the distance between the support plates and the water-cooled wall pipe and the included angle between the support plates can be automatically adjusted, and therefore the walking wheel is tangent to the water-cooled wall pipe, namely the walking wheel is positively pressed on the water-cooled wall pipe;
3. utilize two backup pads and connect the rotation between the rotation axis to be connected, the driving gear and the driven gear meshing of crawling, utilize planetary transmission, realize the meshing between walking drive worm and the walking drive worm wheel, it moves together on the water wall pipe to reuse walking belt drive walking wheel, the auto-lock of walking wheel can be realized with the transmission of walking drive worm wheel to make the semi-annular detection coil after butt joint casing and the switch-on freely move on the water wall pipe, accomplish the detection of water wall pipe.
Drawings
FIG. 1 is a schematic perspective view of a defect eddy current inspection device for a water wall tube of a boiler according to the present invention;
FIG. 2 is a front view of a defect eddy current inspection device for a water wall tube of a boiler according to the present invention;
FIG. 3 is a schematic view of an internal three-dimensional structure of an automatic coil butting assembly of an eddy current testing device for detecting defects of a water wall tube of a boiler according to the present invention;
FIG. 4 is a top view of an eddy current testing apparatus for detecting defects of a water wall tube of a boiler according to the present invention;
FIG. 5 is a schematic perspective view of an adaptive externally-tangent compacting assembly of the eddy current testing device for defects of a water wall tube of a boiler, which is provided by the invention;
FIG. 6 is a schematic perspective view of a walking transmission assembly of the eddy current testing apparatus for detecting defects of water wall tubes of a boiler according to the present invention;
FIG. 7 is a top view of an eddy current testing apparatus for detecting defects of a water wall tube of a boiler according to the present invention;
FIG. 8 isbase:Sub>A schematic cross-sectional view A-A of FIG. 2;
FIG. 9 is a schematic view of the internal structure of a split butt-joint type eddy current testing assembly of the eddy current testing device for detecting defects of a water wall tube of a boiler according to the present invention;
FIG. 10 is an enlarged view of portion A of FIG. 1;
fig. 11 is an enlarged view of a portion B of fig. 7.
Wherein, 1, butting a shell, 2, automatically butting coil components, 3, butting and clamping components, 4, split butting type eddy current detection components, 5, externally tangent automatic creeping mechanism of a pipe wall, 6, self-adaptive externally tangent pressing components, 7, a walking transmission component, 8, a clamping bidirectional threaded rod, 9, a clamping movable sliding block, 10, a clamping supporting rod, 11, a clamping fixed sleeve, 12, a clamping sliding groove, 13, a coil semi-ring fixing body, 14, a semi-ring detection coil, 15, a connection reed, 16, a connecting column, 17, a coil butting groove, 18, a supporting frame, 19, a middle plate, 20, a rotating handle, 21, a connecting plate, 22, a butting rack, 23, a butting gear, 24, a butting rotating shaft, 25 and a guide plate, 26, a linkage threaded rod, 27, a linkage plate, 28, a connecting groove, 29, a support plate, 30, a connecting rotating shaft, 31, a connecting fixing shaft, 32, a rotating groove, 33, a walking transmission worm, 34, a walking transmission worm wheel, 35, a connecting transmission rod, 36, a connecting transmission plate, 37, a belt transmission wheel, 38, a walking belt, 39, a walking rotating shaft, 40, a walking wheel, 41, a linkage belt pulley, 42, a crawling driven gear, 43, a crawling driving gear, 44, a crawling rotating motor, 45, a cover plate, 46, a driving rotating shaft, 47, a walking placing groove, 48, a motor placing groove, 49, a clamping groove, 50, a locking screw II, 51, a locking screw I, 52, a clamping motor, 53 and a rotating block.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
As shown in figure 1, the invention provides a defect eddy current detection device for a boiler water wall tube, which comprises a butt joint shell 1, wherein the butt joint shell 1 is arranged in a semi-annular shape, the butt joint shell 1 is arranged in pairs, one end of the butt joint shell 1 is provided with an automatic coil butt joint component 2, the butt joint shell 1 is connected together through the automatic coil butt joint component 2, the middle part of the outer wall of the butt joint shell 1 is provided with a butt joint clamping component 3, one end face of the butt joint shell 1 is provided with a split butt joint type eddy current detection component 4, the butt joint clamping component 3 is provided with an automatic tube wall externally-cutting crawling mechanism 5, the automatic tube wall externally-cutting crawling mechanism 5 comprises an adaptive externally-cutting pressing component 6 and a walking transmission component 7, the adaptive externally-cutting pressing component 6 is arranged on the butt joint clamping component 3, and the walking transmission component 7 is arranged on the adaptive externally-cutting pressing component 6.
As shown in fig. 1, 2, and 3, in order to satisfy the clamping of water wall tubes with different sizes, the docking clamping assembly 3 includes a clamping bidirectional threaded rod 8, a clamping movable slider 9, a clamping motor 52, a clamping support rod 10, and a clamping fixed sleeve 11, a clamping chute 12 is axially disposed in the middle of the outer side wall of the docking housing 1, the clamping bidirectional threaded rod 8 is disposed in the clamping chute 12, one end of the clamping bidirectional threaded rod 8 penetrates through one end side wall of the clamping chute 12, the clamping movable sliders 9 are symmetrically disposed in the clamping chute 12, the clamping movable slider 9 is disposed on the clamping bidirectional threaded rod 8, one end of the clamping support rod 10 is horizontally hinged to the side wall of the clamping movable slider 9, the outer wall of the clamping fixed sleeve 11 is horizontally hinged to the other end of the clamping support rod 10, the clamping motor 52 is disposed on the outer wall of the end face of the docking housing 1, and the clamping motor 52 is connected with the clamping bidirectional threaded rod 8.
As shown in fig. 1, 8, 9 and 10, the split butt joint type eddy current testing assembly 4 comprises coil semi-ring fixing bodies 13, semi-ring shaped detecting coils 14, connecting reeds 15 and connecting columns 16, wherein the coil semi-ring fixing bodies 13 are arranged on one end surface of the butt joint housing 1, the semi-ring shaped detecting coils 14 are arranged in the coil semi-ring fixing bodies 13, one end surface of one coil semi-ring fixing body 13 is provided with a coil butt joint groove 17, the connection reed 15 is arranged in an L shape, the connection reed 15 is in butt joint with the inner side wall of the coil butt joint groove 17, the connecting column 16 is arranged on the end face of one end of the other coil semi-ring fixing body 13, the detection coil is divided into two semi-ring-shaped detection coils 14, the semi-ring-shaped detection coils 14 are sleeved on the water wall tube without cutting the tube, and then the semi-ring-shaped detection coils 14 are connected together to form the whole detection coil, and the damage of the water wall tube is detected.
As shown in fig. 1, 2, 3 and 4, in order to realize the combined connection of the semi-annular detection coils 14, the automatic coil butt joint assembly 2 includes a support frame 18, an intermediate plate 19, a rotation handle 20, connection plates 21, a butt joint rack 22, a butt joint gear 23, a butt joint rotation shaft 24, a guide plate 25, a linkage threaded rod 26 and a linkage plate 27, one end of the butt joint housing 1 is symmetrically provided with connection grooves 28, the butt joint rotation shaft 24 is arranged between the inner side walls of the connection grooves 28, two ends of the connection plates 21 are respectively rotatably arranged on the butt joint rotation shaft 24, the butt joint housing 1 is connected together through the connection plates 21, the support frame 18 is arranged in an inverted U shape, the support frame 18 is symmetrically arranged on the two connection plates 21, the butt joint gear 23 is fixedly arranged on one side wall of the connection grooves 28, the butt joint gear 23 rotates and locates on butt joint rotation axis 24, butt joint rack 22 locates the connecting plate 21 inside wall, butt joint rack 22 and the meshing of butt joint gear 23, deflector 25 is the setting of L type, the lateral wall of butt joint rack 22 is located to the upper end of deflector 25, deflector 25 runs through the connecting plate 21 upper wall, the upper end of two butt joint racks 22 is located at the both ends of linkage board 27, intermediate lamella 19 is located between the upper portion inside wall of two support frames 18, linkage threaded rod 26 runs through intermediate lamella 19 and linkage board 27, linkage threaded rod 26 passes through threaded connection with linkage board 27, it locates linkage threaded rod 26 upper end to rotate handle 20, the rotation of linkage threaded rod 26, can drive reciprocating of linkage board 27 and butt joint rack 22, can realize the locking of butt joint gear 23 and butt joint rack 22.
As shown in fig. 5 and 6, the adaptive circumscribed compression assembly 6 includes support plates 29, connecting rotation shafts 30 and connecting fixing shafts 31, the support plates 29 are arranged in pairs, one side wall of one end of one support plate 29 is provided with a rotation block 53, one side wall of the other support plate 29 is provided with a rotation groove 32, the rotation groove 32 is arranged in the rotation block 53, the connecting rotation shaft 30 penetrates through the rotation block 53 and the rotation groove 32, the two support plates 29 are connected together through the connecting rotation shaft 30, the connecting rotation shaft 30 penetrates through the clamping fixing sleeve 11, the support plates 29 are connected with the connecting rotation shafts 30 through torsion springs, so that the two support plates 29 are combined together, the two support plates 29 can change the angle therebetween according to the pipe diameter of the water wall tube, the positive pressure of the traveling wheel 40 on the water wall tube is satisfied, the connecting fixing shafts 31 are arranged between the side walls of the support plates 29, and the two support plates 29 on the same side can be connected together.
As shown in fig. 5, 6, 7 and 11, the walking transmission assembly 7 comprises a walking transmission worm 33, a walking transmission worm wheel 34, a connecting transmission rod 35, a connecting transmission plate 36, a belt transmission wheel 37, a walking belt 38, a walking rotation shaft 39, a walking wheel 40, a linked belt pulley 41, a crawling driven gear 42, a crawling driving gear 43, a crawling rotation motor 44, a cover plate 45 and a driving rotation shaft 46, wherein the connecting transmission plate 36 is arranged on the upper wall of the support plate 29, the walking transmission worm 33 is arranged on the side wall of the support plate 29, the connecting transmission rod 35 is arranged in the middle of the side wall of the connecting transmission plate 36 in a penetrating manner, the walking transmission worm wheel 34 is arranged at one end of the connecting transmission rod 35, the walking transmission worm wheel 34 is engaged with the walking transmission worm 33, the belt transmission wheel 37 is arranged at the other end of the connecting transmission rod 35, and a walking placement groove 47 is arranged on the side wall of the support plate 29, the walking rotation shaft 39 is arranged between the inner side walls of the walking placement grooves 47, the walking wheels 40 are symmetrically arranged on the walking rotation shaft 39, when detecting the water wall tube, the walking wheels 40 are in positive pressure on the outer wall of the water wall tube, the linkage belt pulley 41 is arranged on the walking rotation shaft 39, the linkage belt pulley 41 is arranged between the walking wheels 40, the walking belt 38 is arranged on the linkage belt pulley 41 and the belt transmission wheel 37, one end connected with the rotation shaft 30 is provided with a motor placement groove 48, the crawling rotation motor 44 is arranged in the motor placement groove 48, the cover plate 45 is arranged at the motor placement groove 48 connected with the end surface of the rotation shaft 30, the driving rotation shaft 46 penetrates through the cover plate 45, one end of the driving rotation shaft 46 is connected with the crawling rotation motor 44, the crawling driving gear 43 is arranged at the other end of the driving rotation shaft 46, the crawling driven gear 42 is arranged at one end of the walking transmission worm 33, and the crawling driving gear 43 is meshed with the crawling driven gear 42.
As shown in fig. 5, the diameter of the traveling rotary shaft 39 is larger than the thickness of the support plate 29, so that the traveling belt 38 is prevented from interfering with the support plate 29 when being driven by the link pulley 41 and the belt driving pulley 37.
As shown in fig. 8, in order to better connect connection reed 15 and connection pole 16, a clamping groove 49 is formed in the inner side wall of the middle portion of connection reed 15, clamping groove 49 is matched with connection pole 16, and the upper end of connection reed 15 inclines outwards.
As shown in fig. 8, 9, and 10, one end of one of the semi-annular detection coils 14 is connected to the connecting pole 16, and one end of the other semi-annular detection coil 14 is connected to the connecting spring 15, so that the two annular detection coils are connected together.
As shown in FIG. 6, the fixing of the included angle between the support plates 29 is completed according to the pipe diameter of the water wall pipe, the outer wall of the rotating block 53 is provided with a second locking screw 50, and one end of the support plate 29 close to the rotating groove 32 is provided with a first locking screw 51.
When the detection device is used specifically, firstly, two ends of the semi-annular detection coil 14 are connected with an external current detector, a detection person rotates the rotating handle 20 by hand to enable the rotating handle 20 to drive the linkage threaded rod 26 to rotate, the linkage threaded rod 26 drives the linkage plate 27 to move downwards, the linkage plate 27 drives the butt joint rack 22 to move downwards, the butt joint rack 22 is meshed with the butt joint gear 23, the butt joint gear 23 drives the butt joint gear 23 to rotate inwards, so that the butt joint shell 1 is opened outwards, then the opened butt joint shell 1 is placed on a water wall tube to be detected, then the support plates 29 are unfolded, the water wall tube is placed between the support plates 29, then the rotating handle 20 is reversely adjusted, the rotating handle 20 drives the linkage threaded rod 26 to rotate, the linkage threaded rod 26 drives the linkage plate 27 to move upwards, and then the butt joint shell 1 is closed inwards, at the moment, the connecting column 16 on the coil semi-ring fixing body 13 extrudes the connecting reed 15, the connecting column 16 enters the clamping groove 49 of the connecting reed 15, the semi-annular detection coil 14 is switched on, then the clamping motor 52 is switched on, the clamping motor 52 drives the clamping bidirectional threaded rod 8 to rotate, the clamping bidirectional threaded rod 8 drives the clamping movable slider 9 to move oppositely, the clamping movable slider 9 drives the clamping support rod 10 to move towards the middle, the clamping support rod 10 pushes the clamping fixing sleeve 11 to move inwards, the clamping motor 52 is continuously adjusted because the support plate 29 is clamped under the action of the torsion spring, at the moment, the walking wheel 40 is externally tangent to the water wall tube, the walking wheel 40 just positively presses the water wall tube, then the locking screw I51 and the locking screw II 50 are screwed, at the moment, the angle between the support plates 29 on the two sides is kept fixed, then the crawling rotation motor 44 is switched on, the crawling rotation motor 44 drives the driving rotation shaft 46 to rotate, the driving rotating shaft 46 drives the crawling driving gear 43 to rotate, the crawling driving gear 43 drives the crawling driven gear 42 to rotate, the crawling driven gear 42 drives the walking transmission worm 33 to rotate, the walking transmission worm 33 is meshed with the walking transmission worm wheel 34, the walking transmission worm wheel 34 drives the connecting transmission rod 35 to rotate, the connecting transmission rod 35 drives the belt transmission wheel 37 to rotate, the belt transmission wheel 37 drives the walking belt 38 to rotate, the walking belt 38 drives the linkage belt pulley 41 to rotate, the linkage belt pulley 41 drives the walking rotating shaft 39 to rotate, the walking rotating shaft 39 drives the walking wheel 40 to rotate, so that the butt joint shell 1 walks on the water wall tubes, the butt joint shell 1 drives the coil semi-ring fixing body 13 and the semi-ring detection coil 14 to move, the cracks and the wall thickness of the water wall tubes can be detected, after the detection of one water wall tube is completed, the device is disassembled, and the operation is repeated again to complete the detection of the next water wall tube.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should be able to conceive of the present invention without creative design of the similar structural modes and embodiments without departing from the spirit of the present invention, and all such modifications should fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a boiler water wall pipe defect eddy current testing device, includes butt joint casing (1), its characterized in that: the butt joint shell (1) is in a semi-annular shape, the butt joint shell (1) is arranged in pairs, one end of the butt joint shell (1) is provided with an automatic coil butt joint component (2), the butt joint shell (1) is connected together through the automatic coil butt joint component (2), the middle of the outer wall of the butt joint shell (1) is provided with a butt joint clamping component (3), one end face of the butt joint shell (1) is provided with a split butt joint type eddy current detection component (4), the butt joint clamping component (3) is provided with an externally-tangent automatic crawling mechanism (5) of the pipe wall, the externally-tangent automatic crawling mechanism (5) of the pipe wall comprises an adaptive externally-tangent pressing component (6) and a walking transmission component (7), the adaptive externally-tangent pressing component (6) is arranged on the butt joint clamping component (3), and the walking transmission component (7) is arranged on the adaptive externally-tangent pressing component (6).
2. The defect eddy current inspection device for the boiler water wall tube according to claim 1, characterized in that: butt joint clamping unit (3) is including pressing from both sides tight two-way threaded rod (8), pressing from both sides tight movable sliding block (9), pressing from both sides tight motor (52), pressing from both sides tight bracing piece (10) and pressing from both sides tight fixed cover (11), butt joint casing (1) lateral wall middle part is equipped with along the axial and presss from both sides tight spout (12), press from both sides tight two-way threaded rod (8) and locate in pressing from both sides tight spout (12), the one end lateral wall that presss from both sides tight two-way threaded rod (8) is run through to the one end that presss from both sides tight spout (12), press from both sides tight movable sliding block (9) symmetry and locate in pressing from both sides tight spout (12), press from both sides tight movable sliding block (9) and locate on pressing from both sides tight two-way threaded rod (8), the one end level that presss from both sides tight bracing piece (10) articulates and locates and press from both sides tight movable sliding block (9) lateral wall, the outer wall of tight fixed cover (11) is articulated the other end of pressing from both sides that locates tight casing (10), press from both sides tight motor (1) terminal surface outer wall is located in tight motor (52), press from both sides tight motor (52) and press from both sides tight two-way threaded rod (8) and be connected.
3. The defect eddy current inspection device for the boiler water wall tube according to claim 2, characterized in that: split butt joint type eddy current testing subassembly (4) includes coil semi-ring fixed body (13), semi-ring detection coil (14), connection reed (15) and spliced pole (16), butt joint casing (1) one end terminal surface is located in coil semi-ring fixed body (13), semi-ring detection coil (14) are located in coil semi-ring fixed body (13), and the one end terminal surface of one of them coil semi-ring fixed body (13) is equipped with coil butt joint groove (17), it sets up to connect reed (15) to be the L type, it locates coil butt joint groove (17) inside wall to connect reed (15) butt joint, the one end terminal surface of another coil semi-ring fixed body (13) is located in spliced pole (16).
4. The defect eddy current inspection device for the boiler water wall tube according to claim 3, characterized in that: the automatic coil butt joint assembly (2) comprises a support frame (18), a middle plate (19), a rotating handle (20), a connecting plate (21), a butt joint rack (22), a butt joint gear (23), a butt joint rotating shaft (24), a guide plate (25), a linkage threaded rod (26) and a linkage plate (27), wherein connecting grooves (28) are symmetrically arranged at one end of a butt joint shell (1), the butt joint rotating shaft (24) is arranged between the inner side walls of the connecting grooves (28), the two ends of the connecting plate (21) are respectively rotatably arranged on the butt joint rotating shaft (24), the butt joint shell (1) is connected together through the connecting plate (21), the support frame (18) is arranged in an inverted U shape, the support frame (18) is symmetrically arranged on the two connecting plates (21), the butt joint gear (23) is fixedly arranged on one side wall of the connecting grooves (28), the butt joint gear (23) is rotatably arranged on the butt joint rotating shaft (24), the butt joint rack (22) is arranged on the inner side walls of the connecting plates (21), the butt joint rack (22) is engaged with the butt joint gear (23), the guide plate (25) is arranged in an L shape, and the upper end wall of the guide plate (25) penetrates through the connecting plate (21), the upper end of two butt joint racks (22) is located at the both ends of linkage board (27), intermediate lamella (19) are located between the upper portion inside wall of two support frames (18), intermediate lamella (19) and linkage board (27) are run through in linkage threaded rod (26), threaded connection is passed through with linkage board (27) in linkage threaded rod (26), rotate handle (20) and locate linkage threaded rod (26) upper end.
5. The defect eddy current inspection device for the boiler water wall tube according to claim 4, characterized in that: the self-adaptive externally-tangent pressing assembly (6) comprises supporting plates (29), a connecting rotating shaft (30) and a connecting fixed shaft (31), the supporting plates (29) are arranged in pairs, one end side wall of one of the supporting plates (29) is provided with a rotating block (53), one end side wall of the other supporting plate (29) is provided with a rotating groove (32), the rotating groove (32) is formed in the rotating block (53), the connecting rotating shaft (30) penetrates through the rotating block (53) and the rotating groove (32), the two supporting plates (29) are connected together through the connecting rotating shaft (30), the connecting rotating shaft (30) penetrates through the connecting rotating shaft (30) and is arranged on a clamping fixed sleeve (11), the supporting plates (29) are connected with the connecting rotating shaft (30) through torsion springs, and the connecting fixed shaft (31) is arranged between the side walls of the supporting plates (29).
6. The defect eddy current inspection device for the boiler water wall tube according to claim 5, characterized in that: the walking transmission assembly (7) comprises a walking transmission worm (33), a walking transmission worm wheel (34), a connecting transmission rod (35), a connecting transmission plate (36), a belt transmission wheel (37), a walking belt (38), a walking rotation shaft (39), a walking wheel (40), a linkage belt pulley (41), a crawling driven gear (42), a crawling driving gear (43), a crawling rotating motor (44), a cover plate (45) and a driving rotation shaft (46), wherein the connecting transmission plate (36) is arranged on the upper wall of the support plate (29), the walking transmission worm (33) is arranged on the side wall of the support plate (29), the connecting transmission rod (35) is arranged in the middle of the side wall of the connecting transmission plate (36) in a penetrating manner, the walking transmission worm wheel (34) is arranged at one end of the connecting transmission rod (35), the walking transmission worm wheel (34) is meshed with the walking transmission worm wheel (33), the belt transmission wheel (37) is arranged at the other end of the connecting transmission rod (35), a walking standing groove (47) is arranged on the side wall of the support plate (29), the walking rotation shaft (39) is arranged between the inner side walls of the inner side walls, the walking transmission groove (47), the walking transmission wheel (40) is symmetrically arranged on the walking transmission shaft (39), the walking wheel is located between walking wheel (40) in linkage belt pulley (41), walking belt (38) are located on linkage belt pulley (41) and belt drive wheel (37), the one end of connecting rotation axis (30) is equipped with motor standing groove (48), creep rotating electrical machines (44) are located in motor standing groove (48), motor standing groove (48) department of the terminal surface of connecting rotation axis (30) is located in apron (45), apron (45) are run through in initiative rotation axis (46), the one end of initiative rotation axis (46) is connected with creep rotating electrical machines (44), the other end of initiative rotation axis (46) is located in creep driving gear (43), the one end of walking transmission worm (33) is located in creep driven gear (42), creep driving gear (43) and the meshing of crawling driven gear (42).
7. The defect eddy current inspection device for the boiler water wall tube according to claim 6, characterized in that: the diameter size of the walking rotating shaft (39) is larger than the thickness size of the supporting plate (29).
8. The defect eddy current inspection device for the boiler water wall tube according to claim 7, characterized in that: the middle part inside wall of connecting reed (15) is equipped with draw-in groove (49), draw-in groove (49) and spliced pole (16) cooperation, the upper end of connecting reed (15) leans out.
9. The defect eddy current inspection device for the boiler water wall tube according to claim 8, characterized in that: one end of one of the semi-annular detection coils (14) is connected with a connecting column (16), and one end of the other semi-annular detection coil (14) is connected with a connecting reed (15).
10. The defect eddy current inspection device for the boiler water wall tube according to claim 9, characterized in that: the outer wall of the rotating block (53) is provided with a second locking screw (50), and one end of the supporting plate (29) close to the rotating groove (32) is provided with a first locking screw (51).
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| CN202211238424.2A CN115308300B (en) | 2022-10-11 | 2022-10-11 | Boiler water wall pipe defect eddy current testing device |
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|---|---|---|---|
| CN202211238424.2A CN115308300B (en) | 2022-10-11 | 2022-10-11 | Boiler water wall pipe defect eddy current testing device |
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| CN115308300B CN115308300B (en) | 2022-12-20 |
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