CN112361114A - Crack detection device for main steam pipeline of steam turbine - Google Patents
Crack detection device for main steam pipeline of steam turbine Download PDFInfo
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- CN112361114A CN112361114A CN202011303679.3A CN202011303679A CN112361114A CN 112361114 A CN112361114 A CN 112361114A CN 202011303679 A CN202011303679 A CN 202011303679A CN 112361114 A CN112361114 A CN 112361114A
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- cavity
- bevel gear
- pipeline
- fixedly connected
- fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/025—Details with respect to the testing of engines or engine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to the related field of crack detection equipment, and discloses a crack detection device for a main steam pipeline of a steam turbine, which comprises a main box body, wherein a pipeline through cavity which is communicated from left to right is arranged in the main box body, the upper side and the lower side of the pipeline through cavity are both communicated and provided with travelling wheel cavities which are symmetrical up and down, the outer side of the pipeline through cavity is communicated and provided with a plugging block cavity which is annularly arranged by taking the pipeline through cavity as a center and is positioned on the right side of the travelling wheel cavity, the annular blocking block is abutted against the outer circular surface of the main steam pipeline, so that a cavity only provided with an outlet vent cavity is formed in the annular cavity, so that cracks at any position on the main steam pipeline can be detected by the rotating fan shaft, the accuracy and the rapidness of pipeline crack detection are greatly improved, meanwhile, when cracks are detected in the steam pipeline, temporary plugging can be automatically performed, so that the steam in the steam pipeline is suspended to leak, and the safety of steam delivery is ensured.
Description
Technical Field
The invention relates to the related field of crack detection equipment, in particular to a crack detection device for a main steam pipeline of a steam turbine.
Background
The steam turbine main steam pipeline is responsible for the steam transport from boiler superheater export header to steam turbine import main steam valve, has been full of high pressure high temperature's steam in it, if the main steam pipeline appears leaking not only influencing the normal work of steam turbine, still can produce huge security threat to the operating personnel, so the crack detection of main steam pipeline seems especially important, present main steam pipeline mainly is gone on by the manual work, this not only detection efficiency is low but also detects the operation risk big, there is the potential safety hazard.
Disclosure of Invention
The invention aims to provide a crack detection device for a main steam pipeline of a steam turbine, which can overcome the defects in the prior art, so that the practicability of equipment is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention discloses a crack detection device for a main steam pipeline of a steam turbine, which comprises a main box body, wherein a pipeline through cavity which is communicated from left to right is arranged in the main box body, the upper side and the lower side of the pipeline through cavity are communicated with and provided with vertically symmetrical traveling wheel cavities, a blocking block cavity which is annularly arranged by taking the pipeline through cavity as a center and is positioned on the right side of the traveling wheel cavity is communicated with and provided with the outer side of the pipeline through cavity, an annular cavity which is annularly arranged by taking the pipeline through cavity as a center and is positioned on the right side of the blocking block cavity is further communicated with and provided with the inner wall of the pipeline through cavity, annular blocking blocks which are symmetrically abutted against the outer circular surface of the main steam pipeline from left to right by taking the annular cavity as a center are fixedly connected to the inner wall of the pipeline through cavity, the annular cavity is annularly arranged by taking the annular blocking block as a center, and vertically symmetrical blocking belt, the blocking belt wheel cavity is close to a blocking screw rod which is connected with a pipeline through cavity side end wall in a rotating fit mode and extends away from the pipeline through cavity side direction to extend to the blocking belt wheel cavity close to the pipeline through cavity side direction to extend to the blocking block cavity, the blocking screw rod is far away from a pipeline through cavity side end fixedly connected with blocking block belt wheel, the blocking screw rod is far away from a pipeline through cavity side end face and the blocking belt wheel cavity is far away from a blocking block torsional spring fixedly connected between the pipeline through cavity side end walls, the blocking screw rod is close to a pipeline through cavity side end thread fit connection block connected with the blocking block cavity in a sliding fit mode, the rear side of the blocking block cavity is provided with a right bevel gear cavity located between the blocking belt wheel cavities, the blocking belt wheel cavity is close to a right bevel gear cavity side end wall in a rotating fit connection mode and extends to the right bevel gear cavity side direction to be far away from the right bevel gear cavity side direction The direction extends to the shutoff transmission shaft in shutoff band pulley intracavity.
On the basis of the technical scheme, the tail end of the blocking transmission shaft far away from the right bevel gear cavity is fixedly connected with a blocking driving pulley, a blocking transmission belt is connected between the blocking driving pulley and the blocking block pulley in a power fit manner, the tail end of the blocking transmission shaft near the right bevel gear cavity is fixedly connected with a blocking bevel gear, the rear side of the upper traveling wheel cavity is provided with a traveling pulley cavity positioned at the rear side of the pipeline through cavity, the rear side of the traveling pulley cavity is provided with a left bevel gear cavity, the front end wall of the traveling wheel cavity is in rotary fit connection with a traveling wheel shaft which extends backwards to penetrate through the traveling wheel cavity to the rear end wall of the traveling wheel cavity, the upper traveling wheel extends backwards to the inside of the traveling pulley cavity, the traveling wheel shaft is fixedly connected with a traveling wheel positioned in the traveling wheel cavity, and the tail end of the rear side of the traveling wheel shaft is fixedly connected with a traveling, the rear end wall of the traveling bevel gear cavity is connected with a traveling bevel gear shaft which extends backwards into the left bevel gear cavity and extends forwards into the traveling pulley cavity in a matched manner, the tail end of the front side of the traveling bevel gear shaft is fixedly connected with a traveling driving pulley, a traveling transmission belt is connected between the traveling driving pulley and the traveling driven pulley in a matched manner, and the tail end of the rear side of the traveling bevel gear shaft is fixedly connected with a traveling bevel gear.
On the basis of the technical scheme, a motor fixedly connected with the main box body is arranged on the right side of the right bevel gear cavity, the left end surface of the motor is fixedly connected with a motor shaft which extends leftwards and penetrates through the right bevel gear cavity to the left bevel gear cavity, a right bevel gear shaft sleeve positioned in the right bevel gear cavity is connected onto the motor shaft in a spline fit manner, the right tail end of the right bevel gear shaft sleeve is fixedly connected with a right sliding bevel gear which can be meshed with the blocking bevel gear, the left tail end of the right bevel gear shaft sleeve is connected with a right shaft sleeve seat in a rotating fit manner, a motor shaft through cavity which penetrates leftwards and rightwards is arranged in the right shaft sleeve seat, the motor shaft penetrates through the motor shaft through cavity, a right shaft sleeve spring is fixedly connected between the left end surface of the right shaft sleeve seat and the left end wall of the right bevel gear cavity, a shaft sleeve pull rope is fixedly connected onto the, the motor shaft is connected with a left bevel gear shaft sleeve in a spline fit mode, the left bevel gear shaft sleeve is located in the left bevel gear cavity, the tail end of the left side of the left bevel gear shaft sleeve is fixedly connected with a left sliding bevel gear which can be meshed with the traveling bevel gear, the tail end of the right side of the left bevel gear shaft sleeve is connected with a left motor shaft through cavity in a rotating fit mode, and a left shaft sleeve seat which is communicated in a left-right mode is arranged in the left motor shaft.
On the basis of the technical scheme, the motor shaft penetrates through the left shaft sleeve seat, the other end of a pull rope between the shaft sleeves is fixedly connected with the right end surface of a through cavity of the left motor shaft, a left shaft sleeve spring is fixedly connected between the right end surface of the through cavity of the left motor shaft and the right end wall of the left bevel gear cavity, the upper side of the annular cavity is communicated with a ventilation cavity, the upper side of the ventilation cavity is communicated with a fan cavity, the upper side of the fan cavity is communicated with an air outlet cavity with an upward opening, the left end wall of the fan cavity is fixedly connected with a fan seat, the left side of the fan cavity is provided with a fan transmission cavity extending rightwards into the fan seat, the lower end wall of the fan transmission cavity is rotatably matched and connected with a fan shaft extending upwards into the fan transmission cavity and downwards into the fan cavity, the tail end of the lower side of the fan shaft is fixedly connected, the fan transmission cavity upside is equipped with the turning block chamber, turning block chamber upside intercommunication is equipped with the fixture block chamber, fan transmission cavity upper end wall internal rotation cooperation is connected with and upwards extends to the turning block intracavity downwardly extending reaches the motor in the fan transmission intracavity, the terminal fixedly connected with fan driven pulley of motor downside.
On the basis of the technical scheme, a fan belt is connected between the fan driven belt wheel and the fan driving belt wheel in a power fit manner, a rotating block is fixedly connected to the tail end of the upper side of the motor, a plurality of centrifugal block cavities which are circumferentially distributed by taking the motor as a center and are outward in opening are arranged in the rotating block, centrifugal blocks are connected in a sliding fit manner in the centrifugal block cavities, centrifugal block springs are fixedly connected between the centrifugal blocks and the end surfaces of the motor side and the bottom walls of the centrifugal block cavities, a baffle plate positioned on the right side of the rotating block is connected in a sliding fit manner in the rotating block cavities, a baffle plate spring is fixedly connected between the right end surface of the baffle plate and the right end wall of the rotating block cavity, the other end of a pull rope of the right shaft sleeve is fixedly connected with the right end surface of the baffle plate, a, and a fixture block spring is fixedly connected between the lower end surface of the fixture block electromagnet and the upper end surface of the fixture block.
The invention has the beneficial effects that: the annular plugging block abutted to the outer circular surface of the main steam pipeline enables a cavity which is only provided with an outlet ventilation cavity to be formed in the annular cavity, cracks appear at any position on the main steam pipeline and can be detected through the rotating fan shaft, accuracy and quickness of pipeline crack detection are greatly improved, temporary plugging can be automatically performed when cracks appear in the steam pipeline, steam in the steam pipeline is enabled to be temporarily suspended and leaked, and safety of steam conveying is ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of an overall structure of a crack detection device for a main steam pipeline of a steam turbine according to the present invention.
Fig. 2 is a schematic view of the structure a-a in fig. 1.
FIG. 3 is a schematic diagram of B-B in FIG. 1.
Fig. 4 is a schematic diagram of the structure C-C in fig. 3.
Fig. 5 is an enlarged schematic view of D in fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The main steam pipeline crack detection device of the steam turbine includes a main box 10, a pipeline through cavity 17 which is through from left to right is arranged in the main box 10, the upper side and the lower side of the pipeline through cavity 17 are communicated with a traveling wheel cavity 19 which is symmetrical up and down, the outer side of the pipeline through cavity 17 is communicated with a blocking block cavity 16 which is arranged by taking the pipeline through cavity 17 as a central ring and is positioned on the right side of the traveling wheel cavity 19, the outer side of the pipeline through cavity 17 is also communicated with an annular cavity 13 which is arranged by taking the pipeline through cavity 17 as a central ring and is positioned on the right side of the blocking block cavity 16, an annular blocking block 12 which is abutted against the outer circumferential surface of the main steam pipeline by taking the annular cavity 13 as a central bilateral symmetry is fixedly connected to the inner wall of the pipeline through cavity 17, the annular cavity 13 is arranged by taking the annular blocking block 12 as a central ring, the upper side and the lower side of the blocking block cavity 16 are provided with a blocking belt wheel cavity 24 which is symmetrical up and, shutoff pulley chamber 24 is close to 17 side end wall normal running fit of pipeline leads to chamber 17 is connected and is directional to keeping away from 17 side direction of pipeline leads to chamber extends to in the shutoff pulley chamber 24 to being close to 17 side direction of pipeline leads to chamber extends to shutoff lead screw 23 in the shutoff piece chamber 16, shutoff lead screw 23 is kept away from the terminal fixedly connected with shutoff piece band pulley 14 in 17 side of pipeline leads to chamber, shutoff lead screw 23 is kept away from 17 side end face of pipeline leads to chamber with shutoff pulley chamber 24 keeps away from fixedly connected with shutoff piece torsional spring 15 between the 17 side end wall of pipeline leads to chamber, shutoff lead screw 23 is close to 17 side terminal screw fit of pipeline lead to chamber be connected with the shutoff piece 21 that 16 sliding fit of shutoff piece chamber is connected, 16 rear sides of shutoff piece chamber are equipped with and are located the lower side right bevel gear chamber 27 between the shutoff pulley chamber 24, shutoff pulley chamber 24 is close to right bevel gear chamber 27 side end wall normal running fit is connected and is directional to being close to right bevel gear chamber 27 side bevel gear chamber 27 And the side direction of the blocking transmission shaft 29 extends into the right bevel gear cavity 27 and extends to the blocking pulley cavity 24 in the direction away from the right bevel gear cavity 27.
In addition, in one embodiment, the end of the blocking transmission shaft 29 far from the right bevel gear cavity 27 is fixedly connected with a blocking driving pulley 25, a blocking transmission belt 22 is connected between the blocking driving pulley 25 and the blocking block pulley 14 in a power fit manner, the end of the blocking transmission shaft 29 near the right bevel gear cavity 27 is fixedly connected with a blocking bevel gear 28, the rear side of the upper traveling wheel cavity 19 is provided with a traveling pulley cavity 30 positioned at the rear side of the pipeline through cavity 17, the rear side of the traveling pulley cavity 30 is provided with a left bevel gear cavity 31, the front end wall of the traveling wheel cavity 19 is rotatably connected with a traveling wheel shaft 20 which extends backwards and penetrates through the traveling wheel cavity 19 to the rear end wall of the traveling wheel cavity 19 in a fit manner, the upper traveling wheel shaft 20 extends backwards and penetrates into the traveling pulley cavity 30, and the traveling wheel 18 positioned in the traveling wheel cavity 19 is fixedly connected to the traveling wheel shaft 20, a traveling driven pulley 35 is fixedly connected to the rear end of the upper traveling wheel shaft 20, a traveling bevel gear shaft 38 extending backward into the left bevel gear chamber 31 and extending forward into the traveling pulley chamber 30 is rotatably fitted and connected to the rear end wall of the traveling pulley chamber 30, a traveling driving pulley 37 is fixedly connected to the front end of the traveling bevel gear shaft 38, a traveling transmission belt 34 is connected between the traveling driving pulley 37 and the traveling driven pulley 35 in a power fitting manner, and a traveling bevel gear 36 is fixedly connected to the rear end of the traveling bevel gear shaft 38.
In addition, in one embodiment, a motor 72 fixedly connected with the main box 10 is arranged on the right side of the right bevel gear cavity 27, a motor shaft 50 extending through the right bevel gear cavity 27 to the left bevel gear cavity 31 is fixedly connected to the left end surface of the motor 72, a right bevel gear bushing 40 positioned in the right bevel gear cavity 27 is connected to the motor shaft 50 in a spline fit manner, a right sliding bevel gear 26 capable of meshing with the sealing bevel gear 28 is fixedly connected to the right end of the right bevel gear bushing 40, a right bushing seat 39 is connected to the left end of the right bevel gear bushing 40 in a rotating fit manner, a motor shaft through cavity 41 extending left and right is arranged in the right bushing seat 39, the motor shaft 50 penetrates through the motor shaft through cavity 41, and a right bushing spring 42 is fixedly connected between the left end surface of the right bushing seat 39 and the left end wall of the right bevel gear cavity 27, the left end face of the right shaft sleeve seat 39 is fixedly connected with a shaft sleeve room stay cord 43, the left end face of the right shaft sleeve seat 39 is also fixedly connected with a right shaft sleeve stay cord 51, a left bevel gear shaft sleeve 47 located in the left bevel gear cavity 31 is connected to the motor shaft 50 in a spline fit mode, the tail end of the left side of the left bevel gear shaft sleeve 47 is fixedly connected with a left sliding bevel gear 32 meshed with the advancing bevel gear 36, the tail end of the right side of the left bevel gear shaft sleeve 47 is connected with a left motor shaft through cavity 48 in a rotating fit mode, and a left shaft sleeve seat 45 which is through from left to right is arranged in the left motor shaft.
In addition, in one embodiment, the motor shaft 50 penetrates through the left shaft sleeve seat 45, the other end of the shaft sleeve inter-pull rope 43 is fixedly connected with the right end face of the left motor shaft through cavity 48, a left shaft sleeve spring 49 is fixedly connected between the right end face of the left motor shaft through cavity 48 and the right end wall of the left bevel gear cavity 31, the upper side of the annular cavity 13 is communicated with a ventilation cavity 11, the upper side of the ventilation cavity 11 is communicated with a fan cavity 61, the upper side of the fan cavity 61 is communicated with an air outlet cavity 60 with an upward opening, the left end wall of the fan cavity 61 is fixedly connected with a fan seat 62, the left side of the fan cavity 61 is provided with a fan transmission cavity 67 extending rightwards into the fan seat 62, the lower end wall of the fan transmission cavity 67 is rotatably and fittingly connected with a fan shaft 64 extending upwards into the fan transmission cavity 67 and downwards into the fan cavity 61, the lower end of the fan shaft 64 is fixedly connected with, the tail end of the upper side of the fan shaft 64 is fixedly connected with a fan driving belt pulley 59, the upper side of the fan transmission cavity 67 is provided with a rotating block cavity 71, the upper side of the rotating block cavity 71 is communicated with a clamping block cavity 57, the upper end wall of the fan transmission cavity 67 is connected with a motor 72 which extends upwards to the rotating block cavity 71 and extends downwards to the fan transmission cavity 67 in a rotating matching mode, and the tail end of the lower side of the motor 72 is fixedly connected with a fan driven belt pulley 69.
In addition, in one embodiment, a fan belt 65 is connected between the fan driven pulley 69 and the fan driving pulley 59 in a power fit manner, a rotating block 53 is fixedly connected to the upper end of the motor 72, a plurality of centrifugal block cavities 54 which are circumferentially distributed with the motor 72 as a center and are outwardly opened are formed in the rotating block 53, centrifugal blocks 52 are connected in the centrifugal block cavities 54 in a sliding fit manner, centrifugal block springs 70 are fixedly connected between the end surfaces of the centrifugal blocks 52 close to the side of the motor 72 and the bottom wall of the centrifugal block cavity 54, a baffle 68 positioned on the right side of the rotating block 53 is connected in the rotating block cavity 71 in a sliding fit manner, a baffle spring 66 is fixedly connected between the right end surface of the baffle 68 and the right end wall of the rotating block cavity 71, the other end of the right shaft sleeve pull rope 51 is fixedly connected with the right end surface of the baffle 68, and a latch, a fixture block electromagnet 56 is fixedly connected to the upper end wall of the fixture block cavity 57, and a fixture block spring 55 is fixedly connected between the lower end surface of the fixture block electromagnet 56 and the upper end surface of the fixture block 58.
The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.
As shown in fig. 1-5, when the apparatus of the present invention is in an initial state, the centrifugal block spring 70 is in a relaxed state, the centrifugal block 52 is located in the centrifugal block cavity 54, the elastic force of the baffle spring 66 is greater than the elastic force of the right sleeve spring 42, the right sleeve pull rope 51 is in a tightened state, the right sliding bevel gear 26 is not engaged with the plugging bevel gear 28, the latch electromagnet 56 is de-energized, the latch spring 55 is in a relaxed state, the latch 58 extends out of the latch cavity 57, the sleeve pull rope 43 is in a tightened state, the elastic force of the right sleeve spring 42 is greater than the elastic force of the left sleeve spring 49, the right sleeve spring 42 is in a compressed state, the left sliding bevel gear 32 is engaged with the traveling bevel gear 36, and the outer side surface of the plugging block 21 is attached to the;
sequence of mechanical actions of the whole device:
when the steam boiler starts to work, the traveling wheel 18 clamps the outer circular surface of the main steam pipeline, the motor 72 is started to drive the motor shaft 50 to rotate, so that the left bevel gear shaft sleeve 47 rotates, the left sliding bevel gear 32 is driven to rotate, the traveling bevel gear 36 rotates, the traveling bevel gear shaft 38 rotates, the traveling driving belt wheel 37 rotates, the traveling driving belt wheel 34 drives the traveling driven belt wheel 35 to rotate, the traveling wheel shaft 20 rotates, the traveling wheel 18 rotates, and the main tank 10 is driven to travel on the main steam pipeline;
when a crack occurs on the pipeline, the annular cavity 13 moves to the crack, because the main steam pipeline is filled with high-pressure steam, the steam leaks at the crack, at this time, the high-pressure steam fills the annular cavity 13, enters the fan cavity 61 through the ventilation cavity 11, and then leaks to the outside through the ventilation cavity 60, at this time, the high-pressure steam drives the fan 63 to rotate, so that the fan shaft 64 rotates, so that the fan driving pulley 59 rotates, the fan driven pulley 69 rotates through the fan belt 65, so that the motor 72 rotates, so that the rotating block 53 rotates, the centrifugal block 52 moves to the side far away from the motor 72 to touch the baffle 68 by overcoming the pulling force of the centrifugal block spring 70 under the action of centrifugal force, so that the baffle 68 is driven to move to the right side of the fixture block 58 by overcoming the elastic force of the baffle spring 66, so that the right shaft sleeve pull rope 51 is loosened, so that the right shaft sleeve seat 39 moves to the right under, thereby driving the right bevel gear bushing 40 to move rightwards, so that the right sliding bevel gear 26 moves rightwards to be meshed with the plugging bevel gear 28, the right bushing seat 39 moves rightwards to pull the bushing intermediate pull rope 43, so that the left motor shaft through cavity 48 overcomes the elastic force of the left bushing spring 49 to move rightwards, thereby driving the left bevel gear bushing 47 to move rightwards, so that the left sliding bevel gear 32 moves rightwards to be disengaged from the traveling bevel gear 36, thereby stopping the traveling wheel 18 from rotating, thereby stopping the main box 10 from moving, at the moment, the plugging block 21 just moves to the crack, because the fixture block 58 blocks 68, so that the right sliding bevel gear 26 is still meshed with the plugging bevel gear 28, at the moment, the motor shaft 50 rotates to drive the right bevel gear bushing 40 to rotate, thereby rotating the right sliding bevel gear 26, thereby driving the plugging bevel gear 28 to rotate, thereby rotating the plugging transmission shaft 29, thereby driving the plugging driving belt wheel 25 to rotate, driving the plugging block belt wheel 14 to rotate through the plugging transmission belt 22, so as to rotate the plugging screw rod 23, thereby twisting the plugging block torsion spring 15, simultaneously driving the plugging block 21 to move towards the direction close to the side of the pipeline through cavity 17 to abut against the outer circular surface of the pipeline to clamp the pipeline, thereby temporarily plugging cracks, and stopping the rotation of the motor 72 at the moment to wait for a maintenance worker to repair the cracks;
after the crack is repaired, the fixture block electromagnet 56 is electrified to attract the fixture block 58, so that the fixture block 58 overcomes the elastic force of the fixture block spring 55 to move upwards into the fixture block cavity 57, so that the baffle plate 68 moves leftwards under the elastic force of the rotating block cavity 71, no steam passes through the fan cavity 61 because the annular cavity 13 is not in the crack position, so that the fan 63 stops rotating, so that the rotating block 53 stops rotating, so that the centrifugal block 52 moves leftwards close to the motor 72 into the centrifugal block cavity 54 under the pulling force of the centrifugal block spring 70, the baffle plate 68 moves leftwards to the initial position, so that the right shaft sleeve pull rope 51 is pulled, the right sliding bevel gear 26 moves leftwards to be disengaged from the blocking bevel gear 28, so that the shaft sleeve pull rope 43 is loosened, and the left sliding bevel gear 32 moves leftwards to be engaged with the traveling bevel gear 36, the apparatus is restored to the initial state and the motor 72 is started to make the main housing 10 advance again for crack detection on the pipeline.
The invention has the beneficial effects that: the annular plugging block abutted to the outer circular surface of the main steam pipeline enables a cavity which is only provided with an outlet ventilation cavity to be formed in the annular cavity, cracks appear at any position on the main steam pipeline and can be detected through the rotating fan shaft, accuracy and quickness of pipeline crack detection are greatly improved, temporary plugging can be automatically performed when cracks appear in the steam pipeline, steam in the steam pipeline is enabled to be temporarily suspended and leaked, and safety of steam conveying is ensured.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a steam turbine main steam pipeline crack detection device, includes, its characterized in that: including the main tank body, the pipeline that link up about being equipped with in the main tank body leads to the chamber, the pipeline leads to the chamber upper and lower side and all communicates the round chamber of marcing that is equipped with longitudinal symmetry, the pipeline leads to chamber outside intercommunication be equipped with the pipeline leads to the chamber and sets up and be located as central annular the shutoff piece chamber on marcing round chamber right side, the pipeline leads to the chamber outside still intercommunication be equipped with the pipeline leads to the chamber and sets up and be located as central annular the toroidal cavity on shutoff piece chamber right side, pipeline lead to on the intracavity wall fixedly connected with the toroidal cavity is central bilateral symmetry and the annular shutoff piece of main steam conduit outer disc butt, toroidal cavity with the annular shutoff piece sets up as central annular, shutoff piece chamber upper and lower side all be equipped with the pipeline leads to the chamber and leads to the shutoff band pulley chamber of central longitudinal symmetry, shutoff band pulley chamber is close to pipeline leads to chamber side end wall internal rotation cooperation and is connected and is to keeping away from the pipeline leads to the chamber side direction The pipeline through cavity side direction extends to a plugging screw rod in the plugging block cavity, the tail end of the plugging screw rod, which is far away from the pipeline through cavity side, is fixedly connected with a plugging block belt wheel, a plugging block torsion spring is fixedly connected between the end surface of the plugging screw rod far away from the pipeline through cavity and the end wall of the plugging belt wheel cavity far away from the pipeline through cavity, the end of the plugging screw rod, which is close to the side of the pipeline through cavity, is in threaded fit connection with a plugging block which is in sliding fit connection with the plugging block cavity, the rear side of the plugging block cavity is provided with a right bevel gear cavity positioned between the upper and lower plugging pulley cavities, the blocking belt wheel cavity is close to the end wall of the side of the right bevel gear cavity and is connected with a blocking transmission shaft which extends to the side direction of the right bevel gear cavity close to the right bevel gear cavity and extends to the inside of the blocking belt wheel cavity far away from the side direction of the right bevel gear cavity in a rotating and matching manner.
2. The steam turbine main steam pipeline crack detection device of claim 1, characterized in that: the tail end of the side, far away from the right bevel gear cavity, of the plugging transmission shaft is fixedly connected with a plugging driving belt wheel, a plugging transmission belt is connected between the plugging driving belt wheel and the plugging block belt wheel in a power fit mode, the tail end of the side, close to the right bevel gear cavity, of the plugging transmission shaft is fixedly connected with a plugging bevel gear, the rear side of the traveling wheel cavity is provided with a traveling wheel cavity located at the rear side of the pipeline through cavity, the rear side of the traveling wheel cavity is provided with a left bevel gear cavity, the front end wall of the traveling wheel cavity is connected with a traveling wheel shaft in a rotating fit mode and extends backwards to penetrate through the traveling wheel cavity to the rear end wall of the traveling wheel cavity, the traveling wheel shaft at the upper side extends backwards into the traveling wheel cavity, the traveling wheel shaft at the upper side is fixedly connected with a traveling driven belt wheel, and the rear end wall of the traveling wheel cavity is connected with a rotating fit mode and extends backwards into the left bevel gear cavity and the tail end of the front side of the advancing bevel gear shaft is fixedly connected with an advancing driving belt wheel, an advancing transmission belt is connected between the advancing driving belt wheel and the advancing driven belt wheel in a power fit mode, and the tail end of the rear side of the advancing bevel gear shaft is fixedly connected with an advancing bevel gear.
3. The steam turbine main steam pipeline crack detection device of claim 2, wherein: a motor fixedly connected with the main box body is arranged on the right side of the right bevel gear cavity, a motor shaft which extends through the right bevel gear cavity to the left bevel gear cavity leftwards is fixedly connected to the left end face of the motor, a right bevel gear shaft sleeve positioned in the right bevel gear cavity is connected to the motor shaft in a spline fit manner, a right sliding bevel gear capable of being meshed with the blocking bevel gear is fixedly connected to the right end of the right bevel gear shaft sleeve, a right shaft sleeve seat is connected to the left end of the right bevel gear shaft sleeve in a rotating fit manner, a motor shaft through cavity which is communicated leftwards and rightwards is arranged in the right shaft sleeve seat, the motor shaft penetrates through the motor shaft through cavity, a right shaft sleeve spring is fixedly connected between the left end face of the right shaft sleeve seat and the left end wall of the right bevel gear cavity, an inter-shaft pull rope is fixedly connected to the left end face, the motor shaft is connected with a left bevel gear shaft sleeve in a spline fit mode, the left bevel gear shaft sleeve is located in the left bevel gear cavity, the tail end of the left side of the left bevel gear shaft sleeve is fixedly connected with a left sliding bevel gear which can be meshed with the traveling bevel gear, the tail end of the right side of the left bevel gear shaft sleeve is connected with a left motor shaft through cavity in a rotating fit mode, and a left shaft sleeve seat which is communicated in a left-right mode is arranged in the left motor shaft.
4. The steam turbine main steam pipeline crack detection device of claim 3, wherein: the motor shaft penetrates through the left shaft sleeve seat, the other end of the shaft sleeve stay rope is fixedly connected with the right end face of the left motor shaft through cavity, a left shaft sleeve spring is fixedly connected between the right end face of the left motor shaft through cavity and the right end wall of the left bevel gear cavity, the upper side of the annular cavity is communicated with a ventilation cavity, the upper side of the ventilation cavity is communicated with a fan cavity, the upper side of the fan cavity is communicated with an air outlet cavity with an upward opening, the left end wall of the fan cavity is fixedly connected with a fan seat, the left side of the fan cavity is provided with a fan transmission cavity extending rightwards into the fan seat, the lower end wall of the fan transmission cavity is rotationally and fittingly connected with a fan shaft extending upwards into the fan transmission cavity and downwards into the fan cavity, the tail end of the lower side of the fan shaft is fixedly connected with a fan, and the, the fan transmission cavity upside is equipped with the turning block chamber, turning block chamber upside intercommunication is equipped with the fixture block chamber, fan transmission cavity upper end wall internal rotation cooperation is connected with and upwards extends to the turning block intracavity downwardly extending reaches the motor in the fan transmission intracavity, the terminal fixedly connected with fan driven pulley of motor downside.
5. The steam turbine main steam pipeline crack detection device of claim 4, wherein: a fan belt is connected between the fan driven belt wheel and the fan driving belt wheel in a power fit manner, the tail end of the upper side of the motor is fixedly connected with a rotating block, a plurality of centrifugal block cavities which are circumferentially distributed by taking the motor as a center and have outward openings are arranged in the rotating block, a centrifugal block is connected in the centrifugal block cavity in a sliding fit manner, a centrifugal block spring is fixedly connected between the end surface of the centrifugal block close to the side of the motor and the bottom wall of the centrifugal block cavity, a baffle plate positioned at the right side of the rotating block is connected in the rotating block cavity in a sliding fit manner, a baffle plate spring is fixedly connected between the right end surface of the baffle plate and the right end wall of the rotating block cavity, the other end of the pull rope of the right shaft sleeve is fixedly connected with the right end face of the baffle plate, a clamping block is connected in the clamping block cavity in a sliding fit manner, the fixture block cavity is characterized in that a fixture block electromagnet is fixedly connected to the upper end wall of the fixture block cavity, and a fixture block spring is fixedly connected between the lower end face of the fixture block electromagnet and the upper end face of the fixture block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011303679.3A CN112361114A (en) | 2020-11-19 | 2020-11-19 | Crack detection device for main steam pipeline of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011303679.3A CN112361114A (en) | 2020-11-19 | 2020-11-19 | Crack detection device for main steam pipeline of steam turbine |
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| Publication Number | Publication Date |
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| CN112361114A true CN112361114A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011303679.3A Withdrawn CN112361114A (en) | 2020-11-19 | 2020-11-19 | Crack detection device for main steam pipeline of steam turbine |
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| Country | Link |
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| CN (1) | CN112361114A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115085111A (en) * | 2022-07-13 | 2022-09-20 | 国网河南省电力公司沁阳市供电公司 | Waterproof plugging device of power cable pipeline |
| CN115266761A (en) * | 2022-07-27 | 2022-11-01 | 唐山旭华智能科技有限公司 | Multipurpose intelligence patrols and examines robot |
-
2020
- 2020-11-19 CN CN202011303679.3A patent/CN112361114A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115085111A (en) * | 2022-07-13 | 2022-09-20 | 国网河南省电力公司沁阳市供电公司 | Waterproof plugging device of power cable pipeline |
| CN115085111B (en) * | 2022-07-13 | 2023-10-13 | 国网河南省电力公司沁阳市供电公司 | Waterproof plugging device of power cable pipeline |
| CN115266761A (en) * | 2022-07-27 | 2022-11-01 | 唐山旭华智能科技有限公司 | Multipurpose intelligence patrols and examines robot |
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Application publication date: 20210212 |
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