CN115932033B - Crack detection device for inner surface of boiler pressure vessel - Google Patents
Crack detection device for inner surface of boiler pressure vessel Download PDFInfo
- Publication number
- CN115932033B CN115932033B CN202310198747.1A CN202310198747A CN115932033B CN 115932033 B CN115932033 B CN 115932033B CN 202310198747 A CN202310198747 A CN 202310198747A CN 115932033 B CN115932033 B CN 115932033B
- Authority
- CN
- China
- Prior art keywords
- magnetic powder
- container
- cover
- controller
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a crack detection device for the inner surface of a boiler pressure container, which comprises a base, a container detection unit, a detection support unit, a container support unit and a controller, wherein the container support unit is transversely arranged on the base and is used for supporting the pressure container to be detected, and the controller can control the container support unit to drive the pressure container to be detected to rotate at a constant speed; the invention has unique structure and ingenious design, not only can effectively solve the problems of high operation difficulty and long time required for detecting the cracks on the inner surface of the existing boiler pressure vessel, but also can effectively solve the problems of lower accuracy of detection results and harm to the physical health of detection personnel in the detection process.
Description
Technical Field
The invention belongs to the technical field of pressure vessel detection equipment, and particularly relates to a crack detection device for the inner surface of a boiler pressure vessel.
Background
The surface detection of the pressure vessel is a necessary technology for manufacturing high-end equipment of the pressure vessel of the boiler, and particularly, a nondestructive detection method is used for detecting whether the surface and the near surface of the pressure vessel have defects, such as cracks and the like, so as to ensure the safety performance and the service life of the pressure vessel. At present, in the detection operation of the existing boiler pressure container, in order to eliminate the potential safety hazard existing in the boiler pressure container and further ensure the smooth running of the production process, under normal conditions, the whole structure of the boiler pressure container needs to be detected manually by using detection equipment so as to judge the integrity of the boiler pressure container.
However, when detecting personnel carry out magnetic powder detection on a boiler, because the boiler is large in size, the detecting personnel need enter the boiler pressure vessel to detect the inner surface of the boiler pressure vessel, the operation difficulty is large and the required time is long due to the influence of the inner space, when the magnetic powder is sprayed on the inner surfaces of the left and right and upper areas of the boiler pressure vessel, the magnetic powder is difficult to be adhered on the surface of the boiler pressure vessel due to the influence of gravity, the accuracy of the detection result is low, and the magnetic powder which is not adhered on the left and right and upper areas of the pressure boiler can be dispersed in the air in the falling process to form the air inside the polluted pressure vessel, and the physical health of the detecting personnel in the pressure vessel can be damaged.
Disclosure of Invention
Aiming at the defects and problems existing in the detection of cracks on the inner surface of the existing boiler pressure container, the invention provides the device for detecting the cracks on the inner surface of the boiler pressure container, which has the advantages of unique structure and ingenious design, can effectively solve the problems of high operation difficulty and long required time in the detection of the cracks on the inner surface of the existing boiler pressure container, and can also effectively solve the problems of lower accuracy of detection results and harm to the health of detection personnel in the detection process.
The invention solves the technical problems by adopting the scheme that: the device comprises a base, a container detection unit, a detection supporting unit, a container supporting unit and a controller, wherein the container supporting unit is transversely arranged on the base and is used for supporting a pressure container to be detected, and the controller can control the container supporting unit to drive the pressure container to be detected to rotate at a constant speed;
the detection supporting unit comprises a shaft core rod and a supporting driving mechanism, the shaft core rod is transversely arranged on a base at the rear side of the container supporting unit through the supporting driving mechanism, the container detecting unit is arranged at the front end of the shaft core rod, and the controller can control the front opening of the shaft core rod to slide through the supporting driving mechanism so as to drive the container detecting unit to enter or exit the container through a port of the container to be detected;
the container detection unit comprises a parallel connecting rod group, a control mechanism, a magnetic powder supply and recovery mechanism, a magnetic powder cover with an open bottom end and a trapezoid outer cover, wherein the outer cover is arranged below an axle center rod at intervals in parallel and hinged with the front end of the axle center rod through a parallel connecting rod, the control mechanism is arranged on the axle center rod at the rear side of the outer cover and connected with the outer cover, and the outer cover can be controlled by the controller to extend and retract in a translational manner around the axle center rod through the control mechanism;
the bottom ends of the left side wall and the right side wall of the outer cover shell are respectively provided with a roller which protrudes downwards out of the outer cover shell in a rotating way; the magnetic powder cover is transversely arranged in the outer cover shell, and a rubber sealing strip is arranged at the bottom end of the magnetic powder cover; the top end of the magnetic powder cover is connected with the outer cover shell through an elastic connecting mechanism, and the elastic connecting mechanism can push the magnetic powder cover downwards to extend out of the outer cover shell in a natural state;
the magnetic powder supply mechanism is communicated with the magnetic powder cover through a pipeline, and the controller can quantitatively convey magnetic powder to the magnetic powder cover through the magnetic powder supply mechanism; the magnetic powder detection probe is arranged in the trapezoid outer housing at the same side of the magnetic powder cover and the pressure container to be detected in the rotation direction, and is connected with the controller and used for detecting cracks on the inner surface of the pressure container.
The invention has the beneficial effects that: the device for detecting the cracks on the inner surface of the pressure vessel of the boiler is unique in structure and ingenious in design, comprises a base, a vessel detection unit, a detection support unit, a vessel support unit and a controller, and when in use, the rotation of the pressure vessel is utilized, and the expansion, the contraction and the movement of the vessel detection unit are controlled through the cooperation between the monitoring unit and the vessel detection unit, so that the automatic detection of the cracks on the inner surface of the pressure vessel is realized, and the detection operation of the cracks on the inner surface of the pressure vessel can be realized without entering the pressure vessel by an operator; and utilize pressure vessel's rotation, make the pressure vessel internal surface detection zone all be located the bottom in the whole testing process, effectively reduced the magnetic powder and receive the gravity influence be difficult to be detained in pressure vessel internal surface's phenomenon, the accuracy of testing result has been improved, and still set up elasticity and scrape the powder board between magnetic powder test probe and magnetic powder cover, utilize elasticity to scrape the powder board and carry out further strickle to the magnetic powder on the pressure vessel internal ring face when detecting, make magnetic powder evenly distributed, further improve the accuracy of testing result, thereby not only can effectively solve the problem that the operation degree of difficulty is big, the required time is long of current boiler pressure vessel internal surface crack detection, can also effectively solve the testing result accuracy lower, the problem that can cause harm to testing personnel's health in the testing process.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic view of the structure of the detection support unit of the present invention.
Fig. 3 is a schematic perspective view of a parallel linkage of the present invention.
FIG. 4 is a schematic view of the elastic connection mechanism of the present invention.
Fig. 5 is a schematic diagram of the structure of the inventive container inspection unit.
Fig. 6 is a schematic view of the use state of the inventive container inspection unit.
Fig. 7 is a schematic diagram showing a connection mode of the magnetic powder supply mechanism of the invention.
Reference numerals in the drawings: 1 is a base, 2 is a container detection unit, 21 is a parallel connecting rod group, 211 is a connecting rod, 23 is a magnetic powder cover, 24 is an outer cover, 241 is a roller, 25 is a traction rope, 26 is a rubber sealing strip, 27 is a connecting rod, 28 is an anti-drop ring, 29 is a reset top spring, 3 is a detection supporting unit, 31 is a shaft center rod, 32 is a synchronous lifting support, 33 is a guide sleeve, 34 is a linear driving gear, 35 is a driving tooth, 4 is a container supporting unit, 41 is a supporting roller frame, 42 is a supporting roller, 51 is an electric control three-way valve, 52 is a suction pipe, 53 is a conveying pipe, 7 is a pressure container, 7 is a magnetic powder detection probe, 8 is a sealing cover, 81 is a hollow shaft, 82 is a sponge roller, 9 is a powder poking wheel, and 91 is a partition plate.
Detailed Description
The invention will be further described with reference to the drawings and examples.
In the case of example 1,
aiming at the problems in the detection of cracks on the inner surface of the pressure vessel of the boiler, which are proposed in the background art, the embodiment provides a device for detecting cracks on the inner surface of the pressure vessel of the boiler, which has unique structure and ingenious design, and comprises a base 1, a vessel detection unit 2, a detection support unit 3, a vessel support unit 4 and a controller 5, wherein the vessel support unit 4 is transversely arranged on the base and is used for supporting the pressure vessel 6 to be detected, and the controller can control the vessel support unit to drive the pressure vessel to be detected to rotate at a constant speed, and concretely:
the container supporting unit 4 comprises a container supporting roller group and a rotating motor, a plurality of groups of supporting roller groups are arranged on the base at intervals along the transverse direction, the supporting roller groups comprise supporting roller frames 41 which are symmetrically fixed on the base at intervals along the longitudinal direction, supporting rollers 42 are rotatably arranged at the top ends of the supporting roller frames 41, the rotating motor is fixedly arranged on the base and connected with a controller, a motor rotating shaft of the rotating motor is in transmission connection with the supporting rollers on the adjacent side supporting roller frames, and the controller can drive the supporting rollers connected with the rotating motor to rotate through controlling the rotating motor; the number of the supporting roller sets is three, the rotating motor is in transmission connection with the supporting rollers in the middle supporting roller set, and the transmission connection modes are various; when the pressure container is horizontally placed on the container supporting unit in use, the supporting rollers at the top ends of the supporting roller frames at the left side and the right side of the supporting roller set are abutted against the outer circular surface of the pressure container to support the pressure container, and when the controller drives the supporting rollers to rotate at a fixed speed through the rotating motor, the rotating supporting rollers can drive the pressure container to rotate synchronously through friction force.
Further, the outer surface of the support roller 42 is provided with a rubber layer, and when the pressure vessel is placed on the vessel supporting unit, the rubber layer on the outer surface of the support roller is deformed by gravity extrusion of the pressure vessel, so that friction between the pressure vessel and the support roller is further increased, and power transmission is more stable.
The detection supporting unit 3 comprises a shaft center rod 31 and a supporting driving mechanism, the shaft center rod 31 is transversely arranged on a base at the rear side of the container supporting unit through the supporting driving mechanism, the supporting driving mechanism comprises a supporting mechanism and a linear driving mechanism, the supporting mechanism comprises a plurality of synchronous lifting support columns 32 which are transversely arranged at intervals, the synchronous lifting support columns 32 are vertically fixed on the base 1 and are connected with a controller, and the controller can control all the synchronous lifting support columns to synchronously lift; the telescopic end of the synchronous lifting support column is upwards arranged and connected with a guide sleeve 33, the guide sleeve 33 is transversely arranged, and the axle center rod 31 is matched and sleeved in the guide sleeve and can slide back and forth along the guide sleeve; the linear driving mechanism is in transmission connection with the axle center rod, and the controller can drive the center rod to slide back and forth along the guide sleeve through the linear driving mechanism.
The linear driving mechanism comprises a linear driving motor and a linear driving gear 34, the upper end surface of the shaft center rod 31 is transversely provided with driving teeth 35, and the driving teeth are arranged in various modes, for example, the middle part of the upper end surface of the shaft center rod is transversely provided with a mounting groove, a rack matched with the linear driving gear 34 is arranged in the mounting groove, and the rack teeth are meshed with the linear driving gear 34; the linear driving gear is rotatably arranged on any one guide direction and meshed with the teeth of the central rod below, the linear driving motor is in transmission connection with the linear driving gear, and when the controller can drive the linear driving gear to rotate through the linear driving motor, the linear driving gear can drive the shaft center rod to linearly slide along the guide sleeve, so that the expansion and contraction of the central rod are controlled; the container detection unit is arranged at the front end of the axle center rod, and when the axle center rod is controlled to linearly move, the container detection unit arranged at the front end of the axle center rod can enter or exit the container along with the movement of the axle center rod through the front side container port to be detected.
The container detection unit 2 comprises a parallel connecting rod group 21, a control mechanism, an elastic connecting mechanism, a magnetic powder supplying and recovering mechanism, a magnetic powder cover 23 with an open bottom end and a trapezoid outer cover 24, wherein the outer cover 24 is arranged below a shaft center rod at a parallel interval and hinged with the front end of the shaft center rod through the parallel connecting rod group 21, the parallel connecting rod group comprises parallel connecting rods symmetrically arranged at the left side and the right side of the shaft center rod, each parallel connecting rod comprises two connecting rods 211 arranged at a transverse parallel interval, the top ends of the connecting rods 211 are hinged with the shaft center rod, and the two ends of each connecting rod are respectively hinged with the upper end surfaces of the shaft center rod and the outer cover, so that the outer cover and the shaft center rod are combined and connected to form a parallelogram structure frame.
The control mechanism is arranged on the shaft rod at the rear side of the outer cover shell and is connected with the outer cover shell, and the controller can control the base to extend and retract in a translational manner around the shaft rod through the control mechanism; the control mechanism is various, for example, the control mechanism adopted in the implementation comprises an electric push rod connected with a controller, one end of the electric push rod is hinged to the bottom surface of a rear shaft rod of the parallel connecting rod group, the other end of the electric push rod is hinged to the tail end of the outer cover shell, when the controller controls the electric withdrawal rod to stretch, the outer cover shell is pushed and pulled to move horizontally and vertically around the shaft rod, so that the outer cover shell is controlled to move horizontally and stretch downwards far from the shaft rod or move horizontally and shrink upwards close to the shaft rod, and in a non-use state, the outer cover shell is kept in a normally contracted state.
The rope driving mechanism comprises a rope wheel for winding a traction rope 25, the rope wheel is matched with the bottom surface of a shaft core rod arranged at the rear side of the parallel connecting rod group, a winding motor is connected with a fixed shaft transmission of the rope wheel, a controller can control the rope wheel to rotate through the winding motor, the traction end of the traction rope is connected with an outer cover shell, a torsion spring is matched and arranged on a hinge shaft at the top end of each connecting rod, the torsion spring can drive the connecting rod to rotate forwards around the fixed top end in a natural state, and accordingly the outer cover shell is driven to translate and shrink upwards, the traction rope is stretched, and when the controller controls the rope wheel to wind the traction rope, the outer cover shell can be pulled to translate and stretch downwards.
The rollers 241 protruding downwards out of the outer cover are rotatably arranged at the bottom ends of the left side wall and the right side wall of the outer cover, so that when the outer cover descends in the pressure container, the rollers at the left side and the right side can be abutted against the inner annular surface easily by pressure, and friction force between the outer cover and the inner end surface of the pressure container is reduced.
The magnetic powder cover 23 is transversely arranged in the outer cover, the bottom end of the magnetic powder cover is provided with a rubber sealing strip 26, and when the magnetic powder cover is abutted against the inner annular surface of the pressure container, the intersecting sealing sleeve is extruded to deform, so that the inner annular surface of the pressure container shields and seals the opening at the bottom end of the magnetic powder cover; the top of the magnetic powder cover is connected with the outer cover shell through an elastic connecting mechanism, and the elastic connecting mechanism can push the bottom of the magnetic powder cover downwards to extend out of the magnetic powder cover in a natural state, specifically:
the elastic connecting mechanism comprises connecting rods 27 which are uniformly distributed at the top of the magnetic powder cover, the bottom ends of the connecting rods 27 are vertically connected with the top of the magnetic powder cover 23, the top ends of the connecting rods 27 upwards penetrate through the top of the outer cover to extend out of the outer cover, and an anti-drop ring 28 is connected to prevent the connecting rods from sliding downwards to be separated from the outer cover; the connecting rod between the magnetic powder cover and the top of the outer cover shell is sleeved with a reset top spring 29, the reset top spring pushes the magnetic powder cover downwards in a natural state to drive the connecting rod to slide downwards, the magnetic powder cover is driven to move downwards to extend out of the outer cover shell, the anti-drop ring is enabled to be in contact with the upper end face of the outer cover shell, when the magnetic powder cover is used, the elastic connecting mechanism is utilized to buffer the pressure received by the magnetic powder cover when the outer cover shell descends, when the outer cover shell moves downwards, the magnetic powder cover can be in contact with the inner annular face of the pressure container to seal the bottom end of the pressure container, then the outer cover shell continues to move downwards and downwards to press the reset top spring to compress the magnetic powder cover, and the distance between the magnetic powder cover and the top of the outer cover shell is reduced when the magnetic powder cover is guaranteed to be subjected to enough downward pressure, and rollers on the left and right sides of the outer cover shell can move downwards to be in contact with the inner annular face of the pressure container to play a supporting role in the outer cover shell.
Further, in order to ensure that the rollers at the left and right sides of the outer casing can simultaneously collide with the inner annular surface of the pressure vessel, the central axis of the outer casing and the central axis of the vessel supporting unit in the embodiment are on the same vertical plane, that is, the central axis of the outer casing and the central axis of the pressure vessel to be measured placed on the vessel supporting unit are on the same vertical horizontal plane.
The magnetic powder supply mechanism is communicated with the magnetic powder cover through a pipeline, and the controller can quantitatively convey magnetic powder to the magnetic powder cover through the magnetic powder supply mechanism, specifically:
the magnetic powder supply mechanism comprises a magnetic powder pneumatic conveyor and a magnetic powder storage container, wherein a conveying port of the magnetic powder pneumatic conveyor is communicated with the magnetic powder cover through a conveying pipe, a vent communicated with the inside is formed in the top of the magnetic powder cover, a filter screen is installed in the vent in a matched mode and used for filtering magnetic powder, the magnetic powder is prevented from directly drifting out of the vent along with conveying wind discharged into the magnetic powder cover in the process of conveying the magnetic powder into the magnetic powder cover, and a suction port of the magnetic powder pneumatic conveyor is communicated with a discharge port of the magnetic powder storage container.
The magnetic powder cover and the trapezoid outer cover on the same side of the rotation direction of the pressure container to be detected are internally provided with magnetic powder detection probes, and the magnetic powder detection probes 7 are connected with a controller and used for detecting cracks on the inner surface of the pressure container, and specifically: the container supporting unit drives the placed container to be detected to rotate anticlockwise, the magnetic powder detection probe is arranged in the trapezoid outer cover on the right side of the magnetic powder cover, and therefore the magnetic powder detection probe can detect the inner end face of the pressure container passing through the magnetic powder cover when in use.
Further, as shown in fig. 4 and 5, a sealed cover 8 with an open bottom end is arranged in a trapezoid outer cover at the opposite side of the rotation direction of the magnetic powder cover and the pressure container to be detected, the sealed cover 8 is arranged along the transverse direction and is also connected with the outer cover through an elastic connection mechanism, the elastic connection mechanism also pushes the sealed cover downwards in a natural state to enable the bottom end of the elastic connection mechanism to extend out of the outer cover, and the bottom end of the sealed cover is also provided with a rubber sealing strip 26; a hollow shaft 81 is arranged in the sealing cover in a transverse rotation mode, a sponge roller 82 is fixedly sleeved on the hollow shaft 81, the sponge roller 82 protrudes downwards out of the sealing cover, and a communication hole which is communicated with the inside of the hollow shaft is formed in the hollow shaft in the sponge roller sleeving area; one end of the hollow shaft is plugged, a sealing cover extends outwards and is in transmission connection with a driving motor, the driving motor is connected with a controller, when the device is used, the controller can drive the hollow shaft to drive the sponge roller to rotate through the driving motor, and the rotating direction of the hollow shaft is opposite to the rotating direction of the pressurized flow container to be detected; the other end of hollow shaft outwards extends the sealed cowling to install rotary joint, rotary joint's the other end has water supply installation through water piping connection, the controller can be to the hollow shaft in carrying cleaning solution with the sponge roller wets, move down along with the outer housing when using and extend, the sealed cowling can be in the same place with the independent conflict of the interior anchor ring of pressure vessel that waits to detect with the magnetic powder cover simultaneously, with the open shutoff of its lower extreme, sponge roller can be in the same place with the conflict of pressure vessel inner ring face under this state, thereby can clean the pressure vessel inner ring face that will pass through the magnetic powder cover when the controller drives the rotation through driving motor in the testing process, prevent that the pressure vessel inner ring face from remaining the impurity that probably influences magnetic powder normal distribution, influence the density, characteristic and the definition of magnetic powder deposit, guarantee the accuracy of detection.
Working principle: when the pressure container to be detected is placed on the container supporting unit towards the container detecting unit, the controller controls the linear driving mechanism in the supporting driving mechanism to drive the axle center rod to move forward at a certain distance, so that the container detecting unit passes through the container opening of the front side pressure container to be detected and enters the container, then the controller controls the control mechanism to drive the outer cover to translate downwards to expand, two rollers on the outer cover are abutted against the inner annular wall of the pressure container to be detected, in the process, the magnetic powder cover and the rubber sealing strip at the bottom of the sealing cover are abutted against the inner annular wall of the pressure container at first, and the magnetic powder cover and the bottom of the sealing cover are blocked by the pressure inner annular surface of the pressure container under the action of elastic deformation; then the controller controls the magnetic powder supply mechanism to convey magnetic powder into the magnetic powder cover, and the magnetic powder conveyed into the magnetic powder cover is accumulated on the inner ring surface of the pressure container in the magnetic powder cover due to gravity; after the magnetic powder supply mechanism conveys magnetic powder used for detecting the sufficient pressure container into the magnetic powder cover, the controller controls the water supply device to inject water into the hollow shaft to soak the sponge roller, then the controller controls the rotating motor drive in the container support unit to drive the pressure container to be detected to rotate at a constant speed according to the diameter size of the pressure container to be detected, then the controller controls the container detection unit to move at a certain distance at a certain speed according to the length size and the branch diameter size of the pressure container to be detected through the linear driving mechanism, so that the magnetic powder cover slides along the inner ring surface of the pressure container in a spiral track route to detect the inner ring surface of the pressure container,
the magnetic powder cover can drive the internal magnetic powder to move along the inner annular surface of the pressure container which is cleaned by the sponge roller in the process, and a layer of magnetic powder is uniformly left on the inner annular surface of the pressure container which passes through the inner annular surface of the pressure container under the scraping and pushing of the rubber sealing strips, when the magnetic powder passes through cracks on the inner annular surface of the pressure container in the pushing process, the magnetic powder can enter the cracks, so that when the cracks on the inner annular surface of the pressure container pass through the magnetic powder detection probe, the controller can detect the position information of the cracks on the inner annular surface of the pressure container through the magnetic powder detection probe, record the position, facilitate later repair, and automatically control each part to reset according to the sequence after detection is completed, and specifically: the controller can firstly control the control mechanism to drive the outer housing to shrink and reset, and then control the linear driving mechanism to drive the shaft core rod to move backwards so that the container detection unit withdraws from the pressure container after detection.
Compared with the existing pressure container inner surface crack detection device, the pressure container inner surface crack detection device provided by the invention has the advantages that when in use, the rotation of the pressure container is utilized, the expansion, the contraction and the movement of the container detection unit are controlled through the cooperation between the monitoring unit and the container detection unit, the automatic detection of the pressure container inner surface crack is realized, and the detection operation of the pressure container inner surface crack can be realized without entering the pressure container by an operator; and utilize pressure vessel's rotation, make the pressure vessel internal surface detection zone all be located the bottom in the whole testing process, effectively reduced the magnetic powder and receive the gravity influence be difficult to be detained in pressure vessel internal surface's phenomenon, improved the accuracy of testing result, further, set up the elasticity and scrape the powder board between magnetic powder test probe and magnetic powder cover, the elasticity is scraped the powder board and is included along the elasticity flexible seat that transversely sets up, the elasticity flexible seat is connected with the magnetic powder cover, the elasticity is flexible to be matchedly installed and is scraped powder board and top spring in the seat, the top spring can push down in the natural state and scrape powder board and the conflict of pressure vessel inner ring face, carry out further strickle to the magnetic powder on the pressure vessel inner ring face when the pressure vessel inner ring face detects through magnetic powder test probe, make magnetic powder evenly distributed, further improve the accuracy of testing result.
In the case of example 2,
embodiment 2 differs from embodiment 1 in that, as shown in fig. 7, the suction port and the delivery port of the magnetic powder pneumatic conveyor are provided with an electric control three-way valve 51 in a matching way, and the first suction port and the second suction port of the electric control three-way valve on the suction port of the magnetic powder pneumatic conveyor are respectively communicated with the magnetic powder cover and the discharge port of the magnetic powder storage container through a suction pipe 52; the first conveying port and the second conveying port of the electric control three-way valve on the conveying port of the magnetic powder pneumatic conveyor are respectively communicated with the magnetic powder cover and the feeding port of the magnetic powder storage container through a conveying pipe 53; the controller is connected with two magnetic control three-way valves on the magnetic powder wind power conveyor and is used for controlling the opening and closing of a first port and a second port of each three-way valve, and specifically:
when the magnetic powder is required to be supplied into the magnetic powder cover, the controller firstly controls the second conveying port of the electric control three-way valve on the conveying port of the pneumatic conveyor and the first suction port of the electric control three-way valve on the suction port to be closed before the magnetic powder pneumatic conveyor is started, so that the magnetic powder pneumatic conveyor can suck and convey the magnetic powder in the magnetic powder storage container into the magnetic powder cover for use; when the detection is completed and the magnetic powder in the magnetic powder cover needs to be recovered, the controller controls the first conveying port of the electric control three-way valve on the conveying port of the pneumatic conveyor to be closed with the second suction port of the electric control three-way valve on the suction port, so that the magnetic powder pneumatic conveyor can suck and convey the magnetic powder in the magnetic powder cover into the magnetic powder storage container for recovery, and the magnetic powder storage container is convenient to use next time.
In the case of example 3,
embodiment 3 differs from embodiment 2 in that the powder poking wheel 9 is rotatably installed in the powder cover, the powder poking wheel 9 is in transmission connection with the driving motor, and the controller can drive the powder poking wheel to rotate in the opposite direction with the sponge roller synchronously through the driving motor, so that in the use process, the controller can rotate the powder poking wheel in the same direction as the rotation direction of the container to be detected through controlling the powder poking wheel, and can continuously lift and throw the powder stacked on the right side along with the rotation of the container to be detected in the powder cover into the powder cover on the left side of the powder poking wheel, thereby not only improving the uniformity of powder paving, but also ensuring that the powder poking wheel has a scattering function in the process of lifting the powder, and effectively avoiding the phenomenon of agglomeration of the powder.
Further, a partition plate 91 is arranged in the magnetic powder cover above the powder poking wheel 9 along the transverse direction, and the partition plate 91 is matched with the powder poking wheel 9 to divide the inner space of the magnetic powder cover into a left part and a right part along the longitudinal direction.
In the case of example 4,
embodiment 4 differs from embodiment 3 in that a suction pipe is arranged in the outer cover shell between the magnetic powder covers of the sealing cover, and the other end of the suction pipe is externally connected with a negative pressure device for sucking water stains remained on the inner ring surface of the pressure container after the sponge roller is cleaned or accelerating air circulation to dry the water stains.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.
Claims (2)
1. The device is characterized by comprising a base, a container detection unit, a detection support unit, a container support unit and a controller, wherein the container support unit is transversely arranged on the base and is used for supporting a pressure container to be detected, and the controller can control the container support unit to drive the pressure container to be detected to rotate at a constant speed; the detection supporting unit comprises a shaft center rod and a supporting driving mechanism, the supporting driving mechanism comprises a supporting mechanism and a linear driving mechanism, the supporting mechanism comprises a plurality of synchronous lifting struts which are arranged at intervals along the transverse direction, the synchronous lifting struts are vertically fixed on the base and connected with the controller, and the controller can control all the synchronous lifting struts to synchronously lift; the telescopic end of the synchronous lifting support column is upwards arranged and connected with a guide sleeve, the guide sleeve is transversely arranged, and the shaft center rod is matched and arranged in the guide sleeve and can slide back and forth along the guide sleeve; the linear driving mechanism is in transmission connection with the shaft center rod, and the controller can drive the shaft center rod to slide back and forth along the guide sleeve through the linear driving mechanism; the linear driving mechanism comprises a linear driving motor and a linear driving gear, driving teeth are arranged on the upper end face of the shaft center rod along the transverse direction, the driving teeth are meshed with the linear driving gear, the linear driving motor is in transmission connection with the linear driving gear, and when the controller drives the linear driving gear to rotate through the linear driving motor, the linear driving gear can drive the shaft center rod to slide along the guide sleeve in a linear manner, so that the shaft center rod is controlled to stretch;
the container detection unit is arranged at the front end of the axle center rod, and when the axle center rod is controlled to move linearly, the container detection unit arranged at the front end of the axle center rod enters or exits the container along with the movement of the axle center rod through the front container port to be detected; the container detection unit comprises a parallel connecting rod group, a control mechanism, a magnetic powder supply and recovery mechanism, a magnetic powder cover with an open bottom end and a trapezoid outer cover, wherein the trapezoid outer cover is arranged below a shaft center rod at intervals in parallel and hinged with the front end of the shaft center rod through parallel connecting rods;
the control mechanism is arranged on the shaft rod at the rear side of the trapezoid outer housing and is connected with the trapezoid outer housing, the controller controls the trapezoid outer housing to extend downwards away from the shaft rod in a translational manner or retract upwards close to the shaft rod in a translational manner through the control mechanism, and the trapezoid outer housing keeps a normally contracted state in an unused state;
the bottom ends of the left side wall and the right side wall of the trapezoid outer housing are respectively provided with rollers which protrude downwards from the trapezoid outer housing in a rotating manner; the magnetic powder cover is transversely arranged in the trapezoid outer cover, and a rubber sealing strip is arranged at the bottom end of the magnetic powder cover; the top end of the magnetic powder cover is connected with the trapezoid outer cover shell through an elastic connecting mechanism, and the elastic connecting mechanism can push the magnetic powder cover downwards to extend out of the trapezoid outer cover shell in a natural state; the elastic connecting mechanism comprises connecting rods which are uniformly distributed at the top of the magnetic powder cover, the bottom ends of the connecting rods are vertically connected with the top of the magnetic powder cover, the top ends of the connecting rods upwards penetrate through the top of the trapezoid outer cover shell to extend out of the trapezoid outer cover shell, and an anti-drop ring is connected to prevent the connecting rods from sliding downwards to be separated from the trapezoid outer cover shell; the connecting rods between the magnetic powder covers and the tops of the trapezoidal outer cover shells are sleeved with reset top springs, and the reset top springs push the magnetic powder covers downwards to drive the connecting rods to slide downwards in a natural state so as to drive the magnetic powder covers to move downwards to extend out of the trapezoidal outer cover shells, so that the anti-falling rings are abutted against the upper end surfaces of the trapezoidal outer cover shells; the central axis of the trapezoid outer housing is on the same vertical horizontal plane with the central axis of the pressure vessel to be measured placed on the vessel supporting unit;
the container supporting unit comprises a container supporting roller set and a rotating motor, a plurality of groups of supporting roller sets are arranged on the base at intervals along the transverse direction, the supporting roller sets comprise supporting roller frames symmetrically fixed on the base at intervals along the longitudinal direction, supporting rollers are rotatably arranged at the top ends of the supporting roller frames, the rotating motor is fixedly arranged on the base and connected with the controller, and a motor rotating shaft of the rotating motor is in transmission connection with the supporting rollers on the adjacent side supporting roller frames;
the magnetic powder supply and recovery mechanism comprises a magnetic powder pneumatic conveyor and a magnetic powder storage container, wherein a conveying port of the magnetic powder pneumatic conveyor is communicated with the magnetic powder cover through a conveying pipe, and a suction port of the magnetic powder pneumatic conveyor is communicated with a discharge port of the magnetic powder storage container; the top of the magnetic powder cover is provided with a vent communicated with the inside, and a filter screen is arranged in the vent in a matching way;
the first suction port and the second suction port of the electric control three-way valve on the suction port of the magnetic powder pneumatic conveyor are respectively communicated with the magnetic powder cover and the discharge port of the magnetic powder storage container through suction pipes; the first conveying port and the second conveying port of the electric control three-way valve on the conveying port of the magnetic powder pneumatic conveyor are respectively communicated with the magnetic powder cover and the feeding port of the magnetic powder storage container through conveying pipes; the controller is connected with two magnetic control three-way valves on the magnetic powder wind power conveyor;
the magnetic powder cover and the trapezoid outer cover at the opposite side of the rotation direction of the pressure container to be detected are internally provided with sealing covers with an opening at the bottom end, the sealing covers are transversely arranged and connected with the trapezoid outer cover through elastic connecting mechanisms, the elastic connecting mechanisms push the sealing covers downwards in a natural state to enable the bottom ends of the sealing covers to extend out of the trapezoid outer cover, hollow shafts are transversely rotatably arranged in the sealing covers, and sponge rollers are fixedly sleeved on the hollow shafts;
the magnetic powder supply and recovery mechanism is communicated with the magnetic powder cover through a pipeline, and the controller can quantitatively convey magnetic powder to the magnetic powder cover through the magnetic powder supply and recovery mechanism; the magnetic powder detection probe is arranged in the trapezoid outer housing at the same side of the magnetic powder cover and the pressure container to be detected in the rotation direction, and is connected with the controller and used for detecting cracks on the inner surface of the pressure container.
2. The apparatus for detecting cracks on an inner surface of a boiler pressure vessel according to claim 1, wherein a rubber layer is provided on an outer surface of the support roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310198747.1A CN115932033B (en) | 2023-03-03 | 2023-03-03 | Crack detection device for inner surface of boiler pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310198747.1A CN115932033B (en) | 2023-03-03 | 2023-03-03 | Crack detection device for inner surface of boiler pressure vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115932033A CN115932033A (en) | 2023-04-07 |
| CN115932033B true CN115932033B (en) | 2023-08-29 |
Family
ID=86556182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310198747.1A Active CN115932033B (en) | 2023-03-03 | 2023-03-03 | Crack detection device for inner surface of boiler pressure vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115932033B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147438B (en) * | 2023-10-31 | 2023-12-29 | 常州裕能石英科技有限公司 | Quartz crucible port detection device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013137230A (en) * | 2011-12-28 | 2013-07-11 | Ihi Inspection & Instrumentation Co Ltd | Creep damage evaluation method of thermal spray coated tube of boiler furnace |
| KR101705034B1 (en) * | 2015-09-10 | 2017-02-09 | 주식회사 에네스지 | Magnetic Particle Inspection Device for Rotor Bore of Turbine |
| CN208420792U (en) * | 2018-07-02 | 2019-01-22 | 沈阳一佳无损检测有限公司 | A kind of magnetic powder flaw detector probe support device |
| CN210442312U (en) * | 2019-07-05 | 2020-05-01 | 安正计量检测有限公司 | Magnetic particle flaw detector verification calibrating device |
| CN111272863A (en) * | 2020-04-11 | 2020-06-12 | 张占奎 | Nondestructive detector for boiler pressure container pipeline |
| CN111380951A (en) * | 2020-04-08 | 2020-07-07 | 河南省锅炉压力容器安全检测研究院 | Nondestructive detection method and device in long-distance pressure pipeline |
| CN114235959A (en) * | 2021-12-30 | 2022-03-25 | 河南省锅炉压力容器安全检测研究院 | Ultrasonic detection defect positioning auxiliary device |
| CN218272100U (en) * | 2022-06-17 | 2023-01-10 | 侯志强 | Boiler pressure vessel internal surface crack detection device |
-
2023
- 2023-03-03 CN CN202310198747.1A patent/CN115932033B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013137230A (en) * | 2011-12-28 | 2013-07-11 | Ihi Inspection & Instrumentation Co Ltd | Creep damage evaluation method of thermal spray coated tube of boiler furnace |
| KR101705034B1 (en) * | 2015-09-10 | 2017-02-09 | 주식회사 에네스지 | Magnetic Particle Inspection Device for Rotor Bore of Turbine |
| CN208420792U (en) * | 2018-07-02 | 2019-01-22 | 沈阳一佳无损检测有限公司 | A kind of magnetic powder flaw detector probe support device |
| CN210442312U (en) * | 2019-07-05 | 2020-05-01 | 安正计量检测有限公司 | Magnetic particle flaw detector verification calibrating device |
| CN111380951A (en) * | 2020-04-08 | 2020-07-07 | 河南省锅炉压力容器安全检测研究院 | Nondestructive detection method and device in long-distance pressure pipeline |
| CN111272863A (en) * | 2020-04-11 | 2020-06-12 | 张占奎 | Nondestructive detector for boiler pressure container pipeline |
| CN114235959A (en) * | 2021-12-30 | 2022-03-25 | 河南省锅炉压力容器安全检测研究院 | Ultrasonic detection defect positioning auxiliary device |
| CN218272100U (en) * | 2022-06-17 | 2023-01-10 | 侯志强 | Boiler pressure vessel internal surface crack detection device |
Non-Patent Citations (1)
| Title |
|---|
| 锅炉压力容器压力管道检验中裂纹问题及预防处理方法;韩忠美;;中国设备工程(06);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115932033A (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115932033B (en) | Crack detection device for inner surface of boiler pressure vessel | |
| CN111842366A (en) | Wireless natural gas pipeline cleaning device and method | |
| CN113731964B (en) | Device for removing dirt of petroleum pipeline for oil field exploitation | |
| CN112962247B (en) | Improved nanofiber oil absorption material dyeing device and processing method thereof | |
| CN110803499A (en) | Be applied to last unloader of inside and outside wall eddy current inspection simultaneously of stainless steel nozzle stub | |
| CN113884242A (en) | Animal remedy bottle leak hunting device | |
| CN110987312B (en) | Air tightness detection device for oil tank detection process | |
| CN116984261A (en) | Quick food detection device and application method thereof | |
| CN216637742U (en) | A panel conveyer for production of steel wire heated board | |
| CN214059200U (en) | Pneumatic ash conveying gas-ash separating device | |
| CN216568049U (en) | Banana preservation device of compound preservative | |
| CN113714166B (en) | Battery cleaning device for battery storage | |
| CN214813046U (en) | A belt cleaning device for before bearing detects | |
| CN220419089U (en) | Initial water drop angle testing device after optical coating material coating film | |
| CN112406301A (en) | Printing ink printing roller | |
| CN111232601A (en) | Raw material conveyor is used in production of environment-friendly sepiolite | |
| CN105668192A (en) | Substrate conveying system | |
| CN220107927U (en) | Photovoltaic board intelligence cleaning system | |
| CN218910151U (en) | Inspection and feed supplement system for supporting object laying effect | |
| CN114918198B (en) | Nondestructive testing device for pipeline | |
| CN215036444U (en) | Automatic outer polishing device for circular tubes | |
| CN114533909B (en) | Medical endoscope center soft type endoscope disinfection device | |
| CN219550994U (en) | Drying furnace liquid scraping device and drying furnace for lithium battery diaphragm production | |
| CN117969662A (en) | Electromagnetic ultrasonic detector for metal pipe | |
| CN214652013U (en) | SCR dust remover discharge apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |