A maintenance device for large temperature difference heating pipeline

Abstract

The present invention provides a maintenance device for a large temperature difference heating pipeline, comprising a front movable plate and a rear movable plate, an electric push rod is fixedly installed on the rear side of the rear movable plate, the telescopic end of the electric push rod passes through the rear movable plate and is fixedly docked with a movable column, the front movable plate is fixedly sleeved on the movable column; a shooting component is installed at the front end of the movable column, the shooting component is used to shoot the pipe wall condition; the top and bottom of the front movable plate and the rear movable plate are both installed with a retractable arc-shaped abutment plate, a pair of arc-shaped abutment plates extend out to press against the pipe wall, and fix the position of the front movable plate and the rear movable plate. The device can move in the pipeline, observe the pipe wall condition through the shooting component, and realize separation and liquid injection cleaning for more serious scale, with good cleaning effect, saving the amount of detergent, and can also realize the grinding and gluing process for the crack position of the pipe wall, and the crack can be repaired by remote control, which is convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline maintenance, and in particular to a maintenance device for a large temperature difference heating pipeline. Background Art

[0002] Large temperature difference heating is an energy-saving heating method. It uses higher heating temperature and lower return water temperature to provide heating, which can improve the efficiency of the heating system, reduce energy consumption, and achieve the goal of energy conservation and emission reduction. At present, heating pipes are used to achieve large temperature difference heating. Due to the long-term operation of the pipes and the influence of the external environment, the heating pipes are prone to problems such as ditches, blockages, and leakage. Therefore, people use maintenance devices to regularly maintain the pipes.

[0003] Currently, the maintenance method for scale is mostly integrated descaling, that is, filling the entire pipe with cleaning agent. This method uses a large amount of cleaning agent, and scale is often only produced in a certain section of the pipe. The overall descaling cleaning agent is relatively wasteful and the effect is not good, and it is also difficult to carry out repair work on cracks. Summary of the invention

[0004] In view of the above problems, the present invention provides a maintenance device for a large temperature difference heating pipeline. The device can move inside the pipeline, observe the condition of the pipe wall through a shooting component, and implement separation and liquid injection cleaning for more serious scale. The cleaning effect is good and the amount of detergent is saved. The device can also implement grinding and gluing processes for the crack positions of the pipe wall. The crack repair can be completed by remote control, and the device is easy to use.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A maintenance device for a large temperature difference heating pipeline comprises a front movable plate and a rear movable plate, an electric push rod is fixedly installed on the rear side of the rear movable plate, a telescopic end of the electric push rod penetrates the rear movable plate and is fixedly connected to a movable column, and the front movable plate is fixedly sleeved on the movable column;

[0007] A shooting component is installed at the front end of the moving column, and the shooting component is used to shoot the condition of the pipe wall;

[0008] The top and bottom of the front moving plate and the rear moving plate are both equipped with retractable arc-shaped abutment plates, and a pair of arc-shaped abutment plates are extended to abut against the pipe wall to fix the positions of the front moving plate and the rear moving plate;

[0009] The edges of the front movable disk and the rear movable disk are both provided with annular grooves, annular airbags are installed in the annular grooves, a circle of side walls of the annular airbags are bonded with annular sealing pads, and a liquid inlet pipe is installed on the side wall of the rear movable disk. The annular airbags on both sides expand to separate the pipe sections to be cleaned, and the cleaning agent is injected into the separated sections through the liquid inlet pipes;

[0010] The front side sealing sleeve of the moving column located at the front moving disk is provided with a front rotating sleeve, and the sealing sleeve of the moving column located between the front moving disk and the rear moving disk is provided with a rear rotating sleeve. The circumferential side walls of the front rotating sleeve and the rear rotating sleeve are fixedly installed with four telescopic arms, the four telescopic arms on the rear rotating sleeve are synchronously telescopic, and the two pairs of telescopic arms on the front rotating sleeve are telescopic separately;

[0011] The telescopic ends of the two pairs of telescopic arms on the front rotating sleeve are respectively equipped with a grinding head and a glue ball, the grinding head is used to grind the cracks on the pipe wall, and the glue ball is used to apply crack glue on the cracks;

[0012] The telescopic ends of the four telescopic arms on the rear rotating sleeve are all equipped with cleaning plates, and the cleaning plates are used to scrape off the scale on the pipe wall.

[0013] Preferably, the shooting assembly includes an installation cavity arranged at the front end of the moving column, a rotating camera is installed in the installation cavity, the cavity wall of the installation cavity is made of annular glass, a circuit tube is provided in the moving column along its length direction, and the control circuit of the rotating camera extends through the circuit tube.

[0014] Preferably, hydraulic cylinders are installed in the top and bottom of the front movable plate and the rear movable plate, and the telescopic ends of the hydraulic cylinders are fixedly connected to the corresponding arc-shaped abutment plates.

[0015] Preferably, air pipes connected to corresponding annular airbags are provided in the front movable plate and the rear movable plate, and the air pipes extend out of the movable column and are externally connected to an air pump.

[0016] Preferably, a telescopic cavity is provided in the telescopic arm, and a telescopic tube is elastically connected to the telescopic cavity through a spring, the cleaning plate, the grinding head and the glue-coating ball are respectively fixedly mounted on the ends of the corresponding telescopic tubes, the telescopic tubes are connected with a connecting tube, and the ends of the connecting tube are connected with the inner walls of the front rotating sleeve and the rear rotating sleeve, and the first control component is installed at the position of the movable column corresponding to the rear rotating sleeve, and the second control component is installed at the position corresponding to the front rotating sleeve.

[0017] Preferably, the first control component includes a conductive ring embedded in the side wall of the movable column, and the circumferential inner wall of the rear rotating sleeve is embedded with four first conductive heads contacting the conductive ring, and the four first conductive heads are electrically connected to corresponding springs respectively, and the conductive ring is connected to an external controller through a line in a line tube.

[0018] Preferably, the second control component includes a pair of conductive rings embedded in the side wall of the movable column, the conductive rings are composed of multiple arc-shaped conductive plates, adjacent arc-shaped conductive plates are arranged at intervals, and the multiple arc-shaped conductive plates are individually connected to an external controller through the line in the line tube. The circumferential inner walls on both sides of the front rotating sleeve are embedded with two second conductive heads that contact the corresponding conductive rings, and the two second conductive heads on both sides are electrically connected to the springs in the two pairs of telescopic arms respectively.

[0019] Preferably, a liquid cavity is provided in the movable column at a position corresponding to the rear rotating sleeve, and a circumferential side wall of the movable column is provided with a plurality of arc-shaped liquid openings connected to the liquid cavity, and the arc-shaped liquid openings are adapted to the corresponding four connecting tubes, and the liquid cavity is connected to a liquid injection tube extending along the movable column, and a liquid spray hole connected to the corresponding telescopic tube is provided at the end of the cleaning plate.

[0020] Preferably, an air cavity and a glue cavity are provided in the movable column at a position corresponding to the front rotating sleeve, the circumferential side wall of the air cavity is provided with a plurality of arc-shaped air ports, the arc-shaped air ports are adapted to a pair of connecting tubes corresponding to the grinding head, the air cavity is connected to a hot air pipe extending along the movable column, the end of the grinding head is provided with a blowing hole connected to the telescopic tube, the circumferential side wall of the glue cavity is provided with a plurality of arc-shaped glue ports, the arc-shaped glue ports are adapted to a pair of connecting tubes corresponding to the glue-coated balls, the glue cavity is connected to a glue injection tube extending along the movable column, the glue-coated balls are connected to the corresponding telescopic tubes, the glue-coated balls are in a mesh sphere, and the side wall sleeve of the movable column is provided with a plurality of sealing rings adapted to the front rotating sleeve and the rear rotating sleeve.

[0021] Preferably, a dual-axis motor is installed in the bottom of the front movable disk, gears are fixed to both output ends of the dual-axis motor, and gear rings meshing with corresponding gears are fixed to the side walls of the front rotating sleeve and the rear rotating sleeve.

[0022] The beneficial effects of the present invention are:

[0023] 1. By installing the front moving plate, the rear moving plate, the electric push rod, the arc-shaped abutment plate and the shooting assembly, it is only necessary to place the front moving plate and the rear moving plate in the pipeline, and the pair of arc-shaped abutment plates on the rear moving plate are extended and retracted by the hydraulic cylinder to press against the pipe wall to fix the position of the rear moving plate, and then the electric push rod is started to drive the front moving plate forward through the moving column, and then the pair of hydraulic cylinders on the front moving plate are started to drive the pair of arc-shaped abutment plates to press against the pipe wall to fix the position of the front moving plate, and then the pair of arc-shaped abutment plates on the rear moving plate are disengaged, and the electric push rod is retracted to move forward a certain distance. The above process is repeated to realize movement in the pipeline, and the rotating camera rotates through the annular glass to shoot the condition of the pipe wall and observe the scale condition and crack position of the pipeline.

[0024] 2. By installing the rear rotating sleeve, the telescopic arm, the first control component, the cleaning plate and the spray hole, when the shooting component observes that the scale condition of a certain section of the pipeline is relatively serious, the rear rotating sleeve is driven to rotate by the gear ring and the gear, and multiple springs are energized synchronously through the first control component to shrink, and then the cleaning plate is driven to extend through the telescopic tube to the position close to the pipe wall, and in coordination with the rotation and forward movement of the moving column, most of the scale on the pipe wall can be scraped off by the cleaning plate, and flushing liquid is injected into the liquid cavity through the injection pipe. Since the rear rotating sleeve is in a sealed rotation process through the sealing ring, the flushing liquid in the liquid cavity is discharged through the multiple arc-shaped liquid ports, squeezed into the four connecting pipes in a rotating state, squeezed into the spray hole through the telescopic tube, and then sprayed out, in coordination with scraping, the scale is flushed, and the cleaning effect is improved.

[0025] 3. By installing the annular airbag and the annular sealing gasket, after a section of the pipe is scraped to remove scale, the front movable disc and the rear movable disc are moved to the two ends of the section of the pipe, and are fixed in position by the arc-shaped abutment plate. The annular airbags on both sides are inflated through the air pump and the air pipe to expand. The annular airbag expands and unfolds circumferentially, so that the annular sealing gasket expands and contacts the pipe wall, sealing the gap to separate the pipe to be cleaned. The cleaning agent is filled between the front movable disc and the rear movable disc through the liquid inlet pipe. The cleaning agent can react with the remaining scale on the pipe wall to decompose and eliminate it, thereby achieving separation and liquid injection cleaning, with good cleaning effect and saving the amount of cleaning agent.

[0026] 4. By installing the front rotating sleeve, a pair of telescopic arms, a grinding head and a second control component, when the shooting component locks the position of the pipeline crack, the controller supplies power to the arc-shaped conductive plate of the corresponding section, and selects a corresponding number of arc-shaped conductive plates to be energized according to the length of the crack. After the second conductive head of the spring corresponding to the grinding head rotates to contact the arc-shaped conductive plate of the energized section, the spring is energized and contracts, driving the grinding head to extend and contact the crack position. The grinding head rotates through the crack and extends out many times, thereby achieving grinding at the crack, forming a groove, and improving the repair quality. At the same time, hot air is filled into the air cavity through the hot air pipe, and the hot air is blown into a pair of connecting pipes in a rotating state through multiple arc-shaped air ports, and finally blown out through the blowing holes. On the one hand, the grinding debris is blown away, and on the other hand, the crack is dried to improve the repair quality.

[0027] 5. By installing the front rotating sleeve, a pair of telescopic arms, the glue-coated ball and the second control component, when the grinding and drying of the crack are completed, the controller supplies power to the arc-shaped conductive plate of the corresponding section, and the arc-shaped conductive plate at the corresponding position for grinding is selected to be energized. After the second conductive head of the spring corresponding to the glue-coated ball rotates to contact the arc-shaped conductive plate of the energized section, the spring is energized and contracts, driving the glue-coated ball to extend and contact the crack groove position. The glue-coated ball passes through the crack several times and extends out. At the same time, the crack glue is filled into the glue cavity through the glue injection tube, blown into a pair of connecting tubes in a rotating state through multiple arc-shaped glue ports, and then squeezed into the glue-coated ball. Since the glue-coated ball is a mesh sphere, the crack glue is smeared to the crack through the mesh holes to achieve repair, thereby realizing the remote repair process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 It is a three-dimensional schematic diagram of the rear rotating sleeve proposed by the present invention;

[0030] Figure 3 A three-dimensional schematic diagram of the front rotating sleeve proposed by the present invention;

[0031] Figure 4 is a cross-sectional view of the present invention;

[0032] Figure 5 A three-dimensional schematic diagram of the mobile column proposed by the present invention;

[0033] Figure 6 A schematic cross-sectional view of the rear rotating sleeve and the telescopic arm proposed by the present invention;

[0034] Figure 7 A schematic cross-sectional view of the front rotating sleeve and telescopic arm proposed by the present invention;

[0035] Figure 8 It is a schematic diagram of the separation and scale cleaning state of the present invention.

[0036] In the figure: 1 electric push rod, 2 moving column, 3 rear moving disk, 4 front moving disk, 5 arc-shaped abutment plate, 6 annular sealing pad, 7 annular groove, 8 cleaning plate, 9 spray hole, 10 liquid inlet pipe, 11 rear rotating sleeve, 12 front rotating sleeve, 13 grinding head, 14 glue ball, 15 gear ring, 16 annular glass, 17 gear, 18 telescopic arm, 19 rotary camera, 20 hydraulic cylinder, 21 annular airbag, 22 dual-axis motor, 23 air pipe, 24 telescopic cavity, 25 connecting pipe, 26 telescopic pipe, 27 spring, 28 first conductive head, 29 conductive ring, 30 line pipe, 31 liquid cavity, 32 arc-shaped liquid port, 33 liquid injection pipe, 34 arc-shaped air port, 35 conductive ring, 36 second conductive head, 37 hot air pipe, 38 glue injection pipe, 39 arc-shaped glue port, 40 sealing ring, 41 blowing hole, 42 air cavity, 43 glue cavity. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0039] Reference Figure 1-8 A maintenance device for a large temperature difference heating pipeline comprises a front movable plate 4 and a rear movable plate 3, an electric push rod 1 is fixedly installed on the rear side of the rear movable plate 3, the telescopic end of the electric push rod 1 passes through the rear movable plate 3 and is fixedly docked with a movable column 2, the front movable plate 4 is fixedly sleeved on the movable column 2, and a telescopic arc-shaped abutment plate 5 is installed on the top and bottom of the front movable plate 4 and the rear movable plate 3, a pair of arc-shaped abutment plates 5 are extended to abut against the pipe wall and fix the position of the front movable plate 4 and the rear movable plate 3, and a hydraulic cylinder 20 is installed on the top and bottom of the front movable plate 4 and the rear movable plate 3, and the telescopic end of the hydraulic cylinder 20 is connected to the movable column 2. The corresponding arc-shaped abutment plates 5 are fixedly connected, and the front moving disk 4 and the rear moving disk 3 are placed in the pipeline. The pair of arc-shaped abutment plates 5 on the rear moving disk 3 are extended and retracted by the hydraulic cylinder 20 to press against the pipe wall to fix the position of the rear moving disk 3. Then, the electric push rod 1 is started to drive the front moving disk 4 forward through the moving column 2, and then the pair of hydraulic cylinders 20 on the front moving disk 4 are started to drive the pair of arc-shaped abutment plates 5 to press against the pipe wall to fix the position of the front moving disk 4. Then, the pair of arc-shaped abutment plates 5 on the rear moving disk 3 are disengaged, and the electric push rod 1 retracts to move forward a certain distance. The above process is repeated to realize movement in the pipeline.

[0040] A shooting component is installed at the front end of the moving column 2, and the shooting component is used to shoot the condition of the pipe wall. The shooting component includes an installation cavity arranged at the front end of the moving column 2, and a rotating camera 19 is installed in the installation cavity. The cavity wall of the installation cavity is made of annular glass 16, and a line tube 30 is provided in the moving column 2 along its length direction. The control circuit of the rotating camera 19 extends through the line tube 30. The rotating camera 19 rotates through the annular glass 16 to shoot the condition of the pipe wall and observe the scale condition and crack location of the pipe.

[0041] The disk edges of the front movable disk 4 and the rear movable disk 3 are both provided with an annular groove 7, and an annular airbag 21 is installed in the annular groove 7. A circle of side walls of the annular airbag 21 are bonded with an annular sealing gasket 6, and the side wall of the rear movable disk 3 is installed with a liquid inlet pipe 10. The annular airbags 21 on both sides expand to separate the pipe section to be cleaned, and the cleaning agent is injected into the separated section through the liquid inlet pipe 10. The front movable disk 4 and the rear movable disk 3 are both provided with air pipes 23 connected with the corresponding annular airbags 21. The air pipes 23 extend out in the movable column 2 and are externally connected to an air pump. The annular airbags 21 on both sides are inflated through the air pump and the air pipe 23 to expand them. The annular airbags 21 expand and unfold circumferentially, so that the annular sealing gasket 6 expands and contacts the pipe wall, seals the gap, and separates the pipe to be cleaned. The cleaning agent is filled between the front movable disk 4 and the rear movable disk 3 through the liquid inlet pipe 10. The cleaning agent can react with the remaining scale on the pipe wall to decompose and eliminate it, so as to achieve separation and liquid injection cleaning, with good cleaning effect and saving the amount of cleaning agent.

[0042] A front rotating sleeve 12 is provided on the moving column 2 in front of the front moving disk 4, and a rear rotating sleeve 11 is provided on the moving column 2 in between the front moving disk 4 and the rear moving disk 3. Four telescopic arms 18 are fixedly mounted on the circumferential side walls of the front rotating sleeve 12 and the rear rotating sleeve 11. The four telescopic arms 18 on the rear rotating sleeve 11 are telescoped synchronously, and the two pairs of telescopic arms 18 on the front rotating sleeve 12 are telescoped separately.

[0043] Furthermore, a telescopic cavity 24 is provided in the telescopic arm 18, and a telescopic tube 26 is elastically connected to the telescopic cavity 24 through a spring 27. The cleaning plate 8, the grinding head 13 and the rubber-coated ball 14 are respectively fixedly installed at the ends of the corresponding telescopic tubes 26, and the telescopic tube 26 is connected to a connecting tube 25, and the ends of the connecting tube 25 are connected to the inner walls of the front rotating sleeve 12 and the rear rotating sleeve 11. A first control component is installed at the position of the mobile column 2 corresponding to the rear rotating sleeve 11, and the first control component includes a conductive ring 29 embedded in the side wall of the mobile column 2, and four first conductive heads 28 contacting the conductive ring 29 are embedded in the circumferential inner wall of the rear rotating sleeve 11. The four first conductive heads 28 are electrically connected to the corresponding springs 27 respectively. The conductive ring 29 is connected to an external controller through a circuit in the circuit tube 30, and the conductive ring 29 is energized by the corresponding controller. The four first conductive heads 28 contact the conductive ring 29, and the four springs 27 are energized synchronously to shrink them, thereby driving the cleaning plate 8 to extend through the telescopic tube 26 and to the position close to the tube wall.

[0044] Furthermore, a second control component is installed at a position corresponding to the front rotating sleeve 12, and the second control component includes a pair of conductive rings 35 embedded in the side wall of the movable column 2, and the conductive rings 35 are composed of multiple arc-shaped conductive plates, and adjacent arc-shaped conductive plates are arranged at intervals. The multiple arc-shaped conductive plates are individually connected to the external controller through the line in the line tube 30, and two second conductive heads 36 contacting the corresponding conductive rings 35 are embedded in the circumferential inner walls on both sides of the front rotating sleeve 12. The two second conductive heads 36 on both sides are electrically connected to the springs 27 in the two pairs of telescopic arms 18 respectively. A corresponding number of arc-shaped conductive plates are selected to be energized according to the length of the crack. After the second conductive head 36 of the grinding head 13 corresponding to the spring 27 rotates to contact the arc-shaped conductive plate of the energized section, the spring 27 is energized and contracted, driving the grinding head 13 to extend to resist the crack position. The grinding head 13 rotates through the crack several times and extends out, so as to achieve grinding at the crack and form a groove.

[0045] The telescopic ends of the two pairs of telescopic arms 18 on the front rotating sleeve 12 are respectively equipped with a grinding head 13 and a glue ball 14. The grinding head 13 is used to grind cracks on the pipe wall, and the glue ball 14 is used to apply crack glue on the cracks.

[0046] Furthermore, an air cavity 42 and a glue cavity 43 are provided in the movable column 2 at a position corresponding to the front rotating sleeve 12, and a plurality of arc-shaped air ports 34 are provided on the circumferential side walls of the air cavity 42, and the arc-shaped air ports 34 are adapted to a pair of connecting tubes 25 corresponding to the grinding head 13, and the air cavity 42 is connected to a hot air pipe 37 extending along the movable column 2, and a blowing hole 41 connected to the telescopic tube 26 is provided at the end of the grinding head 13, and a plurality of arc-shaped glue ports 39 are provided on the circumferential side walls of the glue cavity 43, and the arc-shaped glue ports 39 are adapted to a pair of connecting tubes 25 corresponding to the glue-coated ball 14, and the glue cavity 43 is connected to a glue injection tube 38 extending along the movable column 2, and the glue-coated ball 14 is connected to the corresponding telescopic tube 26, and the glue-coated ball 14 is a mesh sphere, and a plurality of sealing rings 40 adapted to the front rotating sleeve 12 and the rear rotating sleeve 11 are provided on the side wall sleeve of the movable column 2, and the sealing ring 40 realizes sealing in a rotating state.

[0047] The telescopic ends of the four telescopic arms 18 on the rear rotating sleeve 11 are all equipped with cleaning plates 8, and the cleaning plates 8 are used to scrape off the scale on the tube wall. A liquid cavity 31 is provided in the movable column 2 at a position corresponding to the rear rotating sleeve 11, and a plurality of arc-shaped liquid ports 32 are provided on the circumferential side walls of the movable column 2 to communicate with the liquid cavity 31, and the arc-shaped liquid ports 32 are adapted to the corresponding four connecting tubes 25. The liquid cavity 31 is connected to a liquid injection tube 33 extending along the movable column 2, and a liquid spray hole 9 is provided at the end of the cleaning plate 8 to communicate with the corresponding telescopic tube 26. Flushing liquid is injected into the liquid cavity 31 through the liquid injection tube 33. Since the rear rotating sleeve 11 is in a sealed rotation process through the sealing ring 40, the flushing liquid in the liquid cavity 31 is discharged through the plurality of arc-shaped liquid ports 32, squeezed into the four connecting tubes 25 in a rotating state, squeezed into the liquid spray hole 9 through the telescopic tube 26, and then sprayed out to cooperate with scraping and flushing scale.

[0048] A dual-axis motor 22 is installed at the bottom of the front moving disk 4, and gears 17 are fixed to the two output ends of the dual-axis motor 22. The side walls of the front rotating sleeve 12 and the rear rotating sleeve 11 are fixed with gear rings 15 meshing with the corresponding gears 17. The dual-axis motor 22 drives the gears 17 on both sides to rotate, and the gears drive the gear rings 15 to rotate, thereby driving the front rotating sleeve 12 and the rear rotating sleeve 11 to rotate.

[0049] The front movable plate 4 and the rear movable plate 3 are placed in the pipeline, and a pair of arc-shaped abutment plates 5 on the rear movable plate 3 are extended and retracted by the hydraulic cylinder 20 to press against the pipe wall to fix the position of the rear movable plate 3, and then the electric push rod 1 is started to drive the front movable plate 4 to move forward through the moving column 2, and then the pair of hydraulic cylinders 20 on the front movable plate 4 are started to drive the pair of arc-shaped abutment plates 5 to press against the pipe wall to fix the position of the front movable plate 4, and then the pair of arc-shaped abutment plates 5 on the rear movable plate 3 are disengaged, and the electric push rod 1 is retracted to move forward for a certain distance. The above process is repeated to realize movement in the pipeline, and the rotating camera 19 rotates through the annular glass 16 to shoot the condition of the pipe wall and observe the scale condition and crack position of the pipeline.

[0050] When the shooting component observes that the scale situation of a certain section of the pipeline is relatively serious, the rear rotating sleeve 11 is driven to rotate by the ring gear 15 and the gear 17, and the conductive ring 29 is energized through the corresponding controller. The four first conductive heads 28 contact the conductive ring 29, and the four springs 27 are energized synchronously to shrink them, and then the cleaning plate 8 is extended through the telescopic tube 26 to the position close to the pipe wall. In conjunction with the rotation and forward movement of the movable column 2, most of the scale on the pipe wall can be scraped off by the cleaning plate 8, and at the same time, flushing liquid is injected into the liquid cavity 31 through the injection pipe 33. Since the rear rotating sleeve 11 is in a sealed rotation process through the sealing ring 40, the flushing liquid in the liquid cavity 31 is discharged through the multi-segment arc liquid port 32, squeezed into the four connecting pipes 25 in a rotating state, squeezed into the spray hole 9 through the telescopic tube 26, and then sprayed out, in conjunction with scraping, the scale is flushed, and the cleaning effect is improved.

[0051] After a section of the pipe is scraped to remove scale, the front movable disc 4 and the rear movable disc 3 are moved to the two ends of the section of the pipe, and are fixed in position by the arc-shaped abutment plate 5. The annular airbags 21 on both sides are inflated through the air pump and the air pipe 23 to expand. The annular airbags 21 expand circumferentially, so that the annular sealing gasket 6 expands and contacts the pipe wall, sealing the gap to achieve separation of the pipe to be cleaned, and the cleaning agent is filled between the front movable disc 4 and the rear movable disc 3 through the liquid inlet pipe 10. The cleaning agent can react with the remaining scale on the pipe wall to decompose and eliminate it, thereby achieving separation and liquid injection cleaning, with good cleaning effect and saving the amount of cleaning agent.

[0052] After the shooting component locks the position of the pipeline crack, the controller supplies power to the corresponding section of the arc-shaped conductive plate, and selects a corresponding number of arc-shaped conductive plates to be energized according to the length of the crack. After the second conductive head 36 of the grinding head 13 corresponding to the spring 27 rotates to contact the arc-shaped conductive plate of the energized section, the spring 27 is energized and contracts, driving the grinding head 13 to extend and contact the crack position. The grinding head 13 rotates through the crack and extends multiple times, thereby achieving grinding at the crack, forming a groove, and improving the repair quality. At the same time, hot air is filled into the air cavity 42 through the hot air pipe 37, and the hot air is blown into a pair of connecting pipes 25 in a rotating state through multiple arc-shaped air ports 34, and finally blown out through the blowing hole 41. On the one hand, the grinding debris is blown away, and on the other hand, the crack is dried to improve the repair quality.

[0053] When the grinding and drying of the crack are completed, the controller supplies power to the arc-shaped conductive plate of the corresponding section, and selects the arc-shaped conductive plate at the corresponding position for grinding to be energized. After the second conductive head 36 of the spring 27 of the rubber-coated ball 14 turns to contact the arc-shaped conductive plate of the energized section, the spring 27 is energized and contracts, driving the rubber-coated ball 14 to extend and resist the crack groove position. The rubber-coated ball 14 passes through the crack and extends out many times. At the same time, the crack glue is filled into the glue cavity 43 through the glue injection tube 38, blown into a pair of connecting tubes 25 in a rotating state through multiple arc-shaped glue ports 39, and then squeezed into the rubber-coated ball 14. Since the rubber-coated ball 14 is a mesh sphere, the crack glue is applied to the crack through the mesh holes to achieve repair, thereby realizing the remote repair process.

[0054] The above lines can all be extended to the outside of the pipeline through the line pipe 30, and the movement and use of the device can be controlled by a handheld controller.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A maintenance device for a large temperature difference heating pipeline, comprising a front movable plate (4) and a rear movable plate (3), characterized in that: An electric push rod (1) is fixedly mounted on the rear side of the rear movable plate (3); the telescopic end of the electric push rod (1) passes through the rear movable plate (3) and is fixedly connected to a movable column (2); and the front movable plate (4) is fixedly sleeved on the movable column (2); A photographing component is installed at the front end of the movable column (2), and the photographing component is used to photograph the condition of the pipe wall; The top and bottom of the front movable plate (4) and the rear movable plate (3) are both provided with retractable arc-shaped abutment plates (5), and a pair of arc-shaped abutment plates (5) are extended to abut against the pipe wall to fix the positions of the front movable plate (4) and the rear movable plate (3); The disk edges of the front movable disk (4) and the rear movable disk (3) are both provided with an annular groove (7), an annular airbag (21) is installed in the annular groove (7), a ring-shaped sealing gasket (6) is bonded to a circle of the side wall of the annular airbag (21), and a liquid inlet pipe (10) is installed on the side wall of the rear movable disk (3), the annular airbags (21) on both sides expand to separate the pipe sections to be cleaned, and the cleaning agent is injected into the separated sections through the liquid inlet pipe (10); The front sealing sleeve on the moving column (2) located at the front side of the front moving disk (4) is provided with a front rotating sleeve (12), and the sealing sleeve on the moving column (2) located between the front moving disk (4) and the rear moving disk (3) is provided with a rear rotating sleeve (11). The circumferential side walls of the front rotating sleeve (12) and the rear rotating sleeve (11) are both fixedly mounted with four telescopic arms (18), the four telescopic arms (18) on the rear rotating sleeve (11) are synchronously telescopic, and the two pairs of telescopic arms (18) on the front rotating sleeve (12) are separately telescopic; The telescopic ends of the two pairs of telescopic arms (18) on the front rotating sleeve (12) are respectively equipped with a grinding head (13) and a glue ball (14), the grinding head (13) is used to grind cracks on the pipe wall, and the glue ball (14) is used to apply crack glue to the cracks; The telescopic ends of the four telescopic arms (18) on the rear rotating sleeve (11) are all equipped with cleaning plates (8), and the cleaning plates (8) are used to scrape off scale on the pipe wall; The telescopic arm (18) is provided with a telescopic cavity (24), and a telescopic tube (26) is elastically connected to the telescopic cavity (24) via a spring (27). The cleaning plate (8), the grinding head (13) and the rubber coating ball (14) are respectively fixedly mounted at the ends of the corresponding telescopic tubes (26). The telescopic tube (26) is butt-jointed with a connecting tube (25), and the ends of the connecting tube (25) are connected with the inner walls of the front rotating sleeve (12) and the rear rotating sleeve (11). The movable column (2) is provided with a first control component at a position corresponding to the rear rotating sleeve (11), and a second control component at a position corresponding to the front rotating sleeve (12); The first control component comprises a conductive ring (29) embedded in the side wall of the moving column (2); four first conductive heads (28) contacting the conductive ring (29) are embedded in the circumferential inner wall of the rear rotating sleeve (11); the four first conductive heads (28) are electrically connected to corresponding springs (27) respectively; and the conductive ring (29) is connected to an external controller via a circuit in a circuit tube (30); The second control component comprises a pair of conductive rings (35) embedded in the side wall of the movable column (2), the conductive rings (35) being composed of a plurality of arc-shaped conductive plates, adjacent arc-shaped conductive plates being arranged at intervals, and the plurality of arc-shaped conductive plates being individually connected to an external controller through a line in a line tube (30). The circumferential inner walls on both sides of the front rotating sleeve (12) are embedded with two second conductive heads (36) contacting the corresponding conductive rings (35), the two second conductive heads (36) on both sides being electrically connected to springs (27) in two pairs of telescopic arms (18), respectively. A corresponding number of arc-shaped conductive plates are selected to be energized according to the length of the crack, and after the second conductive heads (36) of the grinding head (13) corresponding to the spring (27) rotate to contact the arc-shaped conductive plate of the energized section, the spring (27) is energized and contracted, driving the grinding head (13) to extend to contact the crack position, and the grinding head (13) rotates through the crack several times and extends, thereby achieving grinding at the crack and forming a groove.

2. A maintenance device for a large temperature difference heating pipeline according to claim 1, characterized in that: The shooting assembly comprises an installation cavity arranged at the front end of a moving column (2), a rotating camera (19) being installed in the installation cavity, a cavity wall of the installation cavity being made of annular glass (16), a circuit tube (30) being arranged in the moving column (2) along its length direction, and a control circuit of the rotating camera (19) extending out through the circuit tube (30).

3. A maintenance device for a large temperature difference heating pipeline according to claim 2, characterized in that: Hydraulic cylinders (20) are installed in the top and bottom of the front movable plate (4) and the rear movable plate (3), and the telescopic ends of the hydraulic cylinders (20) are fixedly connected to corresponding arc-shaped abutment plates (5).

4. A maintenance device for a large temperature difference heating pipeline according to claim 3, characterized in that: The front movable plate (4) and the rear movable plate (3) are both provided with air pipes (23) connected to the corresponding annular air bags (21); the air pipes (23) extend out of the movable column (2) and are externally connected to an air pump.

5. A maintenance device for a large temperature difference heating pipeline according to claim 4, characterized in that: A liquid cavity (31) is provided in the movable column (2) at a position corresponding to the rear rotating sleeve (11); a plurality of arc-shaped liquid openings (32) communicating with the liquid cavity (31) are provided on the circumferential side wall of the movable column (2); the arc-shaped liquid openings (32) are adapted to the corresponding four connecting pipes (25); the liquid cavity (31) is connected to a liquid injection pipe (33) extending along the movable column (2); and a liquid spray hole (9) communicating with the corresponding telescopic pipe (26) is provided at the end of the cleaning plate (8).

6. A maintenance device for a large temperature difference heating pipeline according to claim 5, characterized in that: An air cavity (42) and a glue cavity (43) are provided in the movable column (2) at a position corresponding to the front rotating sleeve (12); a plurality of arc-shaped air ports (34) are provided on the circumferential side wall of the air cavity (42); the arc-shaped air ports (34) are adapted to a pair of connecting pipes (25) corresponding to the grinding head (13); the air cavity (42) is connected to a hot air pipe (37) extending from the movable column (2); an air blowing hole (41) connected to the telescopic pipe (26) is provided at the end of the grinding head (13); The circumferential side wall of the movable column (43) is provided with a plurality of arc-shaped glue openings (39), the arc-shaped glue openings (39) are adapted to a pair of connecting tubes (25) corresponding to the glue-coated balls (14), the glue cavity (43) is connected to a glue injection tube (38) extending from the inside of the movable column (2), the glue-coated balls (14) are connected to the corresponding telescopic tubes (26), the glue-coated balls (14) are mesh-shaped spheres, and the side wall sleeve of the movable column (2) is provided with a plurality of sealing rings (40) adapted to the front rotating sleeve (12) and the rear rotating sleeve (11).

7. A maintenance device for a large temperature difference heating pipeline according to claim 6, characterized in that: A dual-axis motor (22) is installed in the bottom of the front moving disk (4), gears (17) are fixed to both output ends of the dual-axis motor (22), and gear rings (15) meshing with corresponding gears (17) are fixed to the side walls of the front rotating sleeve (12) and the rear rotating sleeve (11).

Images