Rust removal device for inner wall of flexible hydrogen conveying pipeline

Abstract

The utility model relates to the field of pipeline corrosion prevention, and discloses a flexible hydrogen conveying pipeline inner wall rust removal device which comprises an operation arm, the inner side wall of the operation arm is fixedly connected with a motor, the outer wall of the operation arm is provided with a cleaning assembly, the cleaning assembly comprises a fixing base, the inner wall of the top end of the fixing base is slidably connected with a fixing block, and the fixing block is fixedly connected with the motor. And multiple sets of hinge rods are hinged to the outer wall of the moving rod, scraping assemblies are arranged at the ends, away from the moving rod, of the hinge rods, and the inner wall of the fixing block is elastically connected with a pressing block through a limiting spring. According to the hydrogen conveying pipeline crack detection device, the cleaning assembly is arranged, when cracks of a hydrogen conveying pipeline are detected, the liquid spraying opening can spray a rust remover through the solution box, impurities possibly attached to the inner wall of the pipeline can be scraped off through the scraping plate, cracks are possibly formed in the impurity bonding position, and the detection effect of the detection sensor is affected.

Description

Technical Field

[0001] The utility model relates to the field of pipeline rust removal and crack detection, in particular to a device for removing rust from the inner wall of a flexible hydrogen transmission pipeline. Background Art

[0002] Flexible hydrogen pipeline is a pipeline system for transporting hydrogen. It is flexible and bendable and suitable for various application environments and special layout requirements. They are usually used in industrial fields, energy fields and hydrogen energy-related projects to transport hydrogen to the required location. With long-term use, rust spots will appear inside the flexible hydrogen pipeline. When conducting pipeline safety inspections, only by first clearing the rust spots can we effectively detect whether the pipeline has cracks. Therefore, it is urgent to provide a pipeline internal rust removal device to facilitate the cleaning of the inside of the pipeline. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a rust removal device for the inner wall of a flexible hydrogen pipeline, aiming to improve the problem that the existing crack detection equipment in the prior art cannot clean impurities, thereby causing some impurities to block the cracks in the hydrogen pipeline.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rust removal device for the inner wall of a flexible hydrogen transmission pipeline, comprising an operating arm, the inner side wall of the operating arm is fixedly connected to a motor, the outer wall of the operating arm is provided with a cleaning assembly, the cleaning assembly comprises a fixed seat, the inner wall of the top of the fixed seat is slidably connected to a fixed block, the bottom end of the outer wall of the fixed block is fixedly connected to a moving rod, the outer wall of the moving rod is hinged to multiple groups of hinged rods, the end of the hinged rod away from the moving rod is provided with a scraping assembly, the surface of the fixed seat is provided with a detection sensor, the outer wall of the fixed seat is fixedly connected to a solution tank, the outer wall of the solution tank is provided with multiple groups of liquid spray outlets, the liquid spray outlets spray rust remover, and the inner wall of the fixed block is elastically connected to a pressing block through a limit spring.

[0005] Furthermore, the scraping assembly comprises a fixed column, and the inner wall of the fixed column is elastically connected to the scraper via a return spring.

[0006] Furthermore, the output shaft of the motor is fixedly connected to the rotation center axis of the fixing seat, and the fixing seat is rotatably connected to the outer wall of the operating arm.

[0007] Furthermore, one end of the limit spring is fixedly connected to the inner wall of the fixed block, and the other end of the limit spring is fixedly connected to the outer wall of the pressing block.

[0008] Furthermore, the push block is slidably connected to the inner wall of the fixed block, the inner wall of the top end of the fixed seat is provided with multiple groups of through holes, and the outer wall of the bottom end of the push block is plugged into the inner wall of the through holes.

[0009] Furthermore, one end of the hinged rod away from the movable rod is hinged to the bottom end of the outer wall of the fixed column, and the fixed column is slidably connected to the inner wall of the fixed seat.

[0010] Furthermore, one end of the return spring is fixedly connected to the bottom end of the outer wall of the scraper, and the other end of the return spring is fixedly connected to the bottom end of the inner wall of the fixed column.

[0011] Furthermore, the outer wall of the scraper is slidably connected to the inner wall of the fixing column.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, by providing a cleaning component, when detecting cracks in the hydrogen transmission pipeline, the rust remover can be sprayed from the liquid spray port through the solution tank, so that impurities that may be attached to the inner wall of the pipeline can be scraped off by the scraper, so that cracks may occur at the places where the impurities are bonded, thereby affecting the detection effect of the detection sensor, and by moving the moving rod, the pipelines of different thicknesses can be adjusted.

[0014] 2. In the utility model, by providing a scraping assembly, when detecting cracks in a hydrogen pipeline, when impurities in the pipeline condense into hard lumps for a long time, the scraper can be buffered, thereby preventing the hard lumps from squeezing the scraper and causing damage to the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall three-dimensional schematic diagram of a rust removal device for the inner wall of a flexible hydrogen transmission pipeline proposed by the utility model;

[0016] Figure 2 A three-dimensional schematic diagram of a cleaning component of a rust removal device for the inner wall of a flexible hydrogen transmission pipeline proposed by the utility model;

[0017] Figure 3 It is a partial cross-sectional schematic diagram of a fixing seat of a rust removal device for the inner wall of a flexible hydrogen transmission pipeline proposed by the utility model;

[0018] Figure 4 The utility model provides a rust removal device for the inner wall of a flexible hydrogen transmission pipeline. Figure 3 The enlarged schematic diagram of part A in the middle;

[0019] Figure 5 The utility model provides a partial cross-sectional schematic diagram of a fixed column of a rust removal device for the inner wall of a flexible hydrogen transmission pipeline.

[0020] Legend:

[0021] 1. Operating arm; 2. Motor; 3. Cleaning assembly; 31. Fixed seat; 32. Fixed block; 33. Moving rod; 34. Articulated rod; 35. Scraping assembly; 351. Fixed column; 352. Reset spring; 353. Scraper; 36. Limit spring; 37. Press block; 4. Detection sensor; 5. Solution tank; 6. Spray port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 3 The utility model provides a rust removal device for the inner wall of a flexible hydrogen pipeline, including an operating arm 1, an inner side wall of the operating arm 1 is fixedly connected to a motor 2, an output shaft of the motor 2 is fixedly connected to a rotation center axis of a fixed seat 31, and the motor 2 is provided so that the fixed seat 31 can rotate around the operating arm 1, so that the pipeline can be cleaned in multiple directions, and the fixed seat 31 is rotatably connected to the outer wall of the operating arm 1. The operating arm 1 is a prior art. By providing the operating arm 1, it is convenient for the staff to insert the cleaning component 3 into the interior of the hydrogen pipeline, and the outer wall of the operating arm 1 is provided with a cleaning component 3.

[0024] Reference Figure 2-Figure 4 The cleaning assembly 3 includes a fixed seat 31, the inner wall of the top of the fixed seat 31 is slidably connected with a fixed block 32, the bottom end of the outer wall of the fixed block 32 is fixedly connected with a moving rod 33, and the top of the fixed seat 31 is provided with a guide groove that fits the movement of the fixed block 32, so that the fixed block 32 can drive the moving rod 33 to move synchronously when moving, and the outer wall of the moving rod 33 is hinged with multiple groups of hinged rods 34, and a scraping assembly 35 is arranged at one end of the hinged rod 34 away from the moving rod 33. A detection sensor 4 is arranged on the surface of the fixed seat 31, and the detection sensor 4 is a prior art The sensor can sense the changes in physical properties such as deformation, pressure and magnetic field around the crack, and transmit the data to external equipment for analysis and evaluation. The outer wall of the fixing seat 31 is fixedly connected with a solution tank 5. The outer wall of the solution tank 5 is provided with a plurality of groups of liquid spraying ports 6. The solution tank 5 can store cleaning liquid inside, and a micro-boosting pump is provided inside to spray the cleaning liquid inside from the liquid spraying port 6 to the outside, so as to spray the rust remover on the inner wall of the pipeline to facilitate the scraper 353 to scrape. The solution tank 5 and the micro-boosting pump inside are both prior art.

[0025] Reference Figure 3 and Figure 4The inner wall of the fixed block 32 is elastically connected to the pressing block 37 through a limiting spring 36. One end of the limiting spring 36 is fixedly connected to the inner wall of the fixed block 32, and the other end of the limiting spring 36 is fixedly connected to the outer wall of the pressing block 37. The function of the limiting spring 36 is that when the pressing block 37 is moved by pressing, there is no need for manual reset, that is, the pressing block 37 can be automatically reset by the elastic action of the limiting spring 36. The pressing block 37 is slidably connected to the inner wall of the fixed block 32, and the inner wall of the top of the fixed seat 31 is provided with multiple groups of through holes. The outer wall of the bottom end of the pressing block 37 is plugged into the inner wall of the through hole, and the plugging between the two fixes the multiple positions where the movable rod 33 drives the hinge rod 34 to move.

[0026] Reference Figure 3-Figure 5 The scraping assembly 35 includes a fixed column 351, and one end of the hinged rod 34 away from the moving rod 33 is hinged at the bottom end of the outer wall of the fixed column 351. When the moving rod 33 moves, the hinged rod 34 allows multiple groups of fixed columns 351 to move closer to or away from each other on the inner wall of the fixed seat 31, so as to adjust according to the inner wall of the pipeline. The fixed column 351 is slidably connected to the inner wall of the fixed seat 31, and the inner wall of the fixed column 351 is elastically connected to the scraper 353 through the return spring 352. The outer wall of the scraper 353 is slidably connected to the fixed seat 31. The inner wall of the fixed column 351 is moved on the inner wall of the fixed column 351 by the scraper 353, so as to prevent the scraper 353 from being buffered when there are hard objects in the pipeline. One end of the return spring 352 is fixedly connected to the bottom end of the outer wall of the scraper 353, and the other end of the return spring 352 is fixedly connected to the bottom end of the inner wall of the fixed column 351. The function of the return spring 352 is to provide elastic support for the scraper 353 when it descends on the inner wall of the fixed column 351, and to reset the position of the scraper 353.

[0027] Working principle: When crack detection is performed on the hydrogen pipeline, the fixing block 32 can be first grasped and the pressing block 37 can be pressed to move on its inner wall to allow the outer wall at the bottom to be separated from the through hole at the current position of the fixing seat 31. When the pressing block 37 moves, the limit spring 36 is elastically compressed. At this time, the fixing block 32 can be directly moved in the guide groove of the inner wall at the top of the fixing seat 31, thereby driving the moving rod 33 to move on the inner wall of the fixing seat 31. When the moving rod 33 moves, the hinged plurality of outer walls will be synchronously moved. The articulated rods 34 move outward or inward synchronously, and when following the movement of the moving rod 33, the articulated rods 34 will drive the fixed column 351 to move on the inner wall of the fixed seat 31, so that the position of the scraper 353 can be adjusted according to the inner wall of the pipe. After the position of the scraper 353 is adjusted, the button 37 is released and it will be elastically acted upon by the limit spring 36, restoring it to its initial position to connect with the through hole at the current position of the fixed seat 31, thereby fixing the position of the fixed block 32 and the moving rod 33.

[0028] At this time, the cleaning component 3 can be inserted as a whole into the inner wall of the pipe by grasping the operating arm 1, and the internal cleaning liquid can be sprayed out from the spray port 6 by starting the micro-boosting pump inside the solution tank 5, so as to flush the impurities that may be attached to and block the cracks on the inner wall of the pipe, and the impurities can be removed by moving the scraper 353. At the same time, when the scraper 353 contacts a hard object, it will squeeze it to move on the inner wall of the fixed column 351, and the reset spring 352 will be elastically compressed until the scraper 353 passes through the hard object, and it will be elastically acted upon by the reset spring 352 to restore it to its original position, thereby protecting the scraper 353. At this time, the detection sensor 4 can be started to detect whether there are cracks on the inner wall after being cleaned by the scraper 353, and the data can be transmitted to an external device for analysis and evaluation.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rust removal device for the inner wall of a flexible hydrogen transmission pipeline, comprising an operating arm (1), characterized in that: The inner side wall of the operating arm (1) is fixedly connected to a motor (2), and the outer wall of the operating arm (1) is provided with a cleaning assembly (3), and the cleaning assembly (3) comprises a fixing seat (31); The inner wall at the top of the fixed seat (31) is slidably connected to a fixed block (32), the bottom end of the outer wall of the fixed block (32) is fixedly connected to a moving rod (33), the outer wall of the moving rod (33) is hinged with a plurality of hinged rods (34), and a scraping assembly (35) is provided at one end of the hinged rod (34) away from the moving rod (33), a detection sensor (4) is provided on the surface of the fixed seat (31), the outer wall of the fixed seat (31) is fixedly connected to a solution tank (5), the outer wall of the solution tank (5) is provided with a plurality of spray ports (6), and the spray ports (6) spray rust remover, and the inner wall of the fixed block (32) is elastically connected to a pressing block (37) via a limit spring (36).

2. A rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 1, characterized in that: The scraping assembly (35) comprises a fixed column (351), and the inner wall of the fixed column (351) is elastically connected to a scraper (353) via a return spring (352).

3. A rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 1, characterized in that: The output shaft of the motor (2) is fixedly connected to the rotation center axis of the fixing seat (31), and the fixing seat (31) is rotatably connected to the outer wall of the operating arm (1).

4. A rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 1, characterized in that: One end of the limit spring (36) is fixedly connected to the inner wall of the fixed block (32), and the other end of the limit spring (36) is fixedly connected to the outer wall of the pressing block (37).

5. The rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 1, characterized in that: The push block (37) is slidably connected to the inner wall of the fixed block (32); the inner wall of the top end of the fixed seat (31) is provided with a plurality of through holes; the outer wall of the bottom end of the push block (37) is plugged into the inner wall of the through holes.

6. A rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 2, characterized in that: One end of the hinged rod (34) away from the movable rod (33) is hinged to the bottom end of the outer wall of the fixed column (351), and the fixed column (351) is slidably connected to the inner wall of the fixed seat (31).

7. The rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 2, characterized in that: One end of the return spring (352) is fixedly connected to the bottom end of the outer wall of the scraper (353), and the other end of the return spring (352) is fixedly connected to the bottom end of the inner wall of the fixed column (351).

8. The rust removal device for the inner wall of a flexible hydrogen pipeline according to claim 2, characterized in that: The outer wall of the scraper (353) is slidably connected to the inner wall of the fixing column (351).

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