A submarine oil and gas pipeline maintenance device

Abstract

The present invention relates to the field of pipeline maintenance equipment, and in particular to a submarine oil and gas pipeline maintenance device. It includes a waterproof shell, two sealing airbags, multiple crawling parts, pneumatic parts and maintenance parts; the waterproof shell is arranged in an annular structure, and the two ends are through for inserting the pipeline; the two sealing airbags are respectively arranged at the two ends of the waterproof shell, and the sealing airbags will fit the surface of the pipeline inserted into the waterproof shell after being inflated, so as to achieve the sealing of the two ends of the waterproof shell; multiple crawling parts are installed in the waterproof shell in an annular array for climbing the pipeline; the pneumatic parts are arranged in the waterproof shell, and are used to extract the seawater inside the waterproof shell after the two ends of the waterproof shell are sealed; the maintenance parts are arranged in the waterproof shell, and are used to detect the pipeline in the internal area of ​​the waterproof shell after the seawater inside the waterproof shell is extracted. The device can handle pipelines in various bending states, and by extracting the seawater to create a dry area, the subsequent maintenance results are more accurate.

Description

Technical Field

[0001] The invention relates to the field of pipeline maintenance equipment, and in particular to a submarine oil and gas pipeline maintenance device. Background Art

[0002] Underwater robot technology is one of the most promising and important means among many high-tech technologies for developing the ocean. It can work for a long time and with high efficiency in harsh environments, complex sea conditions, and extreme environments that traditional manned submersibles cannot enter.

[0003] Existing underwater robots are divided into manually controlled and autonomous types. Autonomous underwater robots are widely used in the fields of marine exploration and marine mapping, but they are lacking in underwater pipeline inspection. This is not only because underwater pipelines are complex and changeable and cannot be inspected autonomously, but also because the abnormal conditions of pipelines are ever-changing and they are not smart enough to identify abnormalities on the pipelines. Traditional manual operation is not only time-consuming and labor-intensive, but also involves various risks. Summary of the invention

[0004] Based on this, it is necessary to provide a submarine oil and gas pipeline maintenance device to address the above-mentioned technical problems. The device can cope with pipelines in various bending states, and by pumping out seawater to create a dry area, the subsequent maintenance results will be more accurate, the maintenance process will be more convenient, time-saving and labor-saving, and easy to operate.

[0005] The present invention provides a submarine oil and gas pipeline maintenance device, comprising:

[0006] The waterproof shell is arranged in a ring-shaped structure, and both ends are penetrated for inserting the pipeline;

[0007] Two sealing airbags are respectively arranged at two ends of the waterproof housing. After the sealing airbags are inflated, they will fit on the surface of the pipe inserted into the waterproof housing to achieve sealing of the two ends of the waterproof housing;

[0008] A plurality of crawlers are installed in the waterproof housing in a circular array and are used for climbing the pipeline;

[0009] A pneumatic component, disposed in the waterproof housing, for pumping out seawater inside the waterproof housing after both ends of the waterproof housing are sealed;

[0010] The inspection component is arranged in the waterproof shell and is used to inspect the pipeline in the internal area of ​​the waterproof shell after the seawater in the waterproof shell is pumped out.

[0011] In one embodiment, the waterproof shell includes a first annular shell, two second annular shells and an annular plate; the cross-section of the second annular shell is arranged in a semicircular structure, the two second annular shells are respectively located at the two ends of the first annular shell, and the outermost circle of the second annular shell is connected to the inner surface of the first annular shell, the annular plate is located in the first annular shell, and the two ends of the annular plate are respectively connected to one end of the two second annular shells, and a second installation cavity arranged in an annular structure is formed between the first annular shell, the two second annular shells and the annular plate.

[0012] In one embodiment, a first installation cavity is formed in the second annular shell, and the sealing airbag includes an annular portion and a connecting portion. The annular portion is located in the first installation cavity, one side of the connecting portion is connected to the interior of the annular portion, and the other side is fixed to the surface of the first installation cavity.

[0013] In one embodiment, a plurality of groups of side panels are arranged in a circular array in the second installation cavity, wherein each group includes four side panels, and the side ends of the four side panels are sequentially connected to form a rectangular space with upper and lower openings, the bottom end of the rectangular space abuts against the first annular outer shell, and the top end of the rectangular space passes through the annular plate to form a third installation cavity with a top opening.

[0014] In one embodiment, a plurality of first mounting covers are arranged in an annular array on the outer surface of the first annular shell, the first mounting cover is located between two adjacent third mounting cavities, a positioning tube is arranged in the second mounting cavity at a position opposite to the first mounting cover, and a fourth mounting cavity is formed between the first mounting cover and the positioning tube.

[0015] In one embodiment, the positioning pipe is connected to the connecting part through a hose, the pneumatic part is installed in the fourth installation cavity, the water inlet end of the pneumatic part is connected to the positioning pipe, and the water outlet end of the pneumatic part passes through the first installation cover.

[0016] In one embodiment, the crawler includes a fixed plate, two pairs of connecting shafts, two connecting sleeves and two groups of rotating wheels; the fixed plate is located in the third mounting cavity, the two pairs of connecting shafts are respectively located at the front and rear ends of the fixed plate, the two connecting sleeves are respectively connected between the two pairs of connecting shafts, a second mounting opening is opened on the connecting sleeve, the fixed plate is passed through the second mounting opening, first mounting openings are opened at both ends of the fixed plate, and the two groups of rotating wheels are respectively rotatably installed in the two first mounting openings.

[0017] In one embodiment, a long hole is opened on the side plate, and the two ends of the connecting shaft are respectively inserted into two opposite long holes, a second mounting cover is arranged in the middle of the fixing plate, and a spring is arranged between the second mounting cover and the bottom surface of the third mounting cavity.

[0018] In one embodiment, the fixing plate will bend when subjected to force, and under normal conditions, both ends of the fixing plate are bent toward the central axis of the first annular shell.

[0019] In one embodiment, a driving motor is disposed in the second installation cavity, and a driving shaft of the driving motor passes through the side plate and is drivingly connected to the rotating wheel for driving the rotating wheel to rotate.

[0020] When the above-mentioned submarine oil and gas pipeline maintenance device is used, the device is loaded onto the pipeline. At this time, the waterproof shell is sleeved on the outer ring of the pipeline, and the two sealing airbags at both ends of the waterproof shell are in an uninflated state. The multiple crawling parts inside the waterproof shell will abut against the surface of the pipeline. At this time, the crawling parts will move and drive the waterproof shell to move along the pipeline. Since the inner ring of the waterproof shell is not attached to the pipeline, even if the pipeline is bent, it will not affect the movement of the device. When it moves to the position to be repaired, the sealing airbag is inflated until it is close to the surface of the pipeline. At this time, the internal space of the waterproof shell is isolated from the external water environment, and the pneumatic parts are started and the seawater in the internal space of the waterproof shell is pumped out into the external water environment. Then the inspection parts are started to inspect the surface of the pipeline in the dry environment inside the waterproof shell. The device can cope with pipelines in various bending states, and by pumping out seawater to create a dry area, the subsequent inspection results are more accurate, the inspection process is more convenient, time-saving and labor-saving, and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of the maintenance device provided by the present invention;

[0023] Figure 2 A schematic cross-sectional structure diagram of the maintenance device provided by the present invention;

[0024] Figure 3 This is one of the partial three-dimensional structural schematic diagrams of the maintenance device provided by the present invention;

[0025] Figure 4 The second schematic diagram of the partial three-dimensional structure of the maintenance device provided by the present invention;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of the crawler provided by the present invention;

[0027] Figure 6 This is a third schematic diagram of the partial three-dimensional structure of the maintenance device provided by the present invention.

[0028] Reference numerals:

[0029] 100, waterproof shell; 110, first annular shell; 120, second annular shell; 121, first installation cavity; 130, annular plate; 140, first installation cover; 150, positioning pipe; 160, side plate; 161, long hole; 170, second installation cavity; 180, third installation cavity; 190, fourth installation cavity; 200, sealing airbag; 210, annular portion; 220, connecting portion; 300, crawling part; 310, fixing plate; 311, first installation port; 320, connecting shaft; 330, connecting sleeve; 331, second installation port; 340, rotating wheel; 341, limiting groove; 350, second installation cover; 360, spring; 400, pneumatic part. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Combine the following Figures 1 to 6 The invention relates to a submarine oil and gas pipeline repair device.

[0032] In one embodiment, a submarine oil and gas pipeline maintenance device includes a waterproof shell 100, two sealing airbags 200, a plurality of crawling parts 300, a pneumatic part 400 and a maintenance part; the waterproof shell 100 is arranged in an annular structure, and both ends are through for penetrating the pipeline; the two sealing airbags 200 are respectively arranged at both ends of the waterproof shell 100, and the sealing airbags 200 will fit on the surface of the pipeline penetrated into the waterproof shell 100 after being inflated, so as to achieve sealing of both ends of the waterproof shell 100; a plurality of crawling parts 300 are installed in the waterproof shell 100 in an annular array for climbing the pipeline; the pneumatic part 400 is arranged in the waterproof shell 100, and is used to extract the seawater inside the waterproof shell 100 after the two ends of the waterproof shell 100 are sealed; the maintenance part is arranged in the waterproof shell 100, and is used to detect the pipeline in the internal area of ​​the waterproof shell 100 after the seawater inside the waterproof shell 100 is extracted.

[0033] Specifically, when in use, the device is loaded onto the pipeline. At this time, the waterproof shell 100 is sleeved on the outer ring of the pipeline, and the two sealing airbags 200 at both ends of the waterproof shell 100 are in an uninflated state. The multiple crawling parts 300 inside the waterproof shell 100 will abut against the surface of the pipeline. At this time, the crawling parts 300 will move and drive the waterproof shell 100 to move along the pipeline. Since the inner ring of the waterproof shell 100 is not attached to the pipeline, even if the pipeline is bent, it will not affect the movement of the device. When moved to the maintenance position, the sealing airbag 200 is inflated until it is tightly attached to the surface of the pipeline. At this time, the internal space of the waterproof shell 100 is isolated from the external water environment, and the pneumatic part 400 is started and the seawater in the internal space of the waterproof shell 100 is pumped out into the external water environment. Then the maintenance part is started to inspect the pipeline surface in the dry environment inside the waterproof shell 100.

[0034] The inspection component is located at the middle of the inner circle of the waterproof housing 100, and can be integrated with multiple inspection components and maintenance components, such as a visual inspection device and a welding device. Figure 2 It can be seen that there are relatively many idle areas in the middle of the inner circle of the waterproof housing 100, and the areas can be used to install maintenance parts.

[0035] When the above-mentioned submarine oil and gas pipeline maintenance device is in use, the device is loaded onto the pipeline. At this time, the waterproof shell 100 is sleeved on the outer ring of the pipeline, and the two sealing airbags 200 at both ends of the waterproof shell 100 are in an uninflated state. The multiple crawling parts 300 inside the waterproof shell 100 will abut against the surface of the pipeline. At this time, the crawling parts 300 will move and drive the waterproof shell 100 to move along the pipeline. Since the inner ring of the waterproof shell 100 is not attached to the pipeline, even if the pipeline is bent, it will not affect the movement of the device. When it moves to the position to be repaired, the sealing airbag 200 is inflated until it is tightly attached to the surface of the pipeline. At this time, the internal space of the waterproof shell 100 is isolated from the external water environment, and the pneumatic part 400 is started to pump the seawater in the internal space of the waterproof shell 100 into the external water environment. Then the maintenance part is started to inspect the pipeline surface in the dry environment inside the waterproof shell 100. The device can handle pipes in various curved states, and by pumping out seawater to create a dry area, the subsequent maintenance results are more accurate, the maintenance process is more convenient, saving time and effort, and easy to operate.

[0036] In one embodiment, the waterproof housing 100 includes a first annular housing 110, two second annular housings 120 and an annular plate 130; the cross-section of the second annular housing 120 is arranged in a semicircular structure, the two second annular housings 120 are respectively located at the two ends of the first annular housing 110, and the outermost circle of the second annular housing 120 is connected to the inner surface of the first annular housing 110, the annular plate 130 is located in the first annular housing 110, and the two ends of the annular plate 130 are respectively connected to one end of the two second annular housings 120, and a second installation cavity 170 arranged in an annular structure is formed between the first annular housing 110, the two second annular housings 120 and the annular plate 130.

[0037] Specifically, the second installation cavity 170 is arranged in an annular structure, and the interior thereof is used for installing various driving and repair components required for the maintenance device.

[0038] Among them, a first installation cavity 121 is formed in the second annular shell 120, and the sealing airbag 200 includes an annular portion 210 and a connecting portion 220. The annular portion 210 is located in the first installation cavity 121, one side of the connecting portion 220 is connected to the inside of the annular portion 210, and the other side is fixed to the surface of the first installation cavity 121.

[0039] The connecting portion 220 is arranged in a rectangular or long strip structure. One side of the connecting portion 220 is bonded and fixed to the surface of the second annular shell 120 , and the other side is connected to the interior of the annular portion 210 . The air outlet or air inlet end of the pneumatic part 400 for air supply and air extraction passes through the second annular shell 120 and is connected to the connecting portion 220 .

[0040] Since the device is applied at the seabed, the area where the pneumatic part 400 is located requires spare air for inflating the sealed airbag 200 and storing the air when the gas in the sealed airbag 200 is extracted.

[0041] In one embodiment, a plurality of groups of side panels 160 are arranged in a circular array in the second installation cavity 170, wherein each group includes four side panels 160, and the side ends of the four side panels 160 are connected in sequence to form a rectangular space with upper and lower openings, the bottom end of the rectangular space abuts against the first annular shell 110, and the top end of the rectangular space passes through the annular plate 130, forming a third installation cavity 180 with a top opening.

[0042] Specifically, the crawler 300 includes a fixed plate 310, two pairs of connecting shafts 320, two connecting sleeves 330 and two groups of rotating wheels 340; the fixed plate 310 is located in the third installation cavity 180, the two pairs of connecting shafts 320 are respectively located at the front and rear ends of the fixed plate 310, the two connecting sleeves 330 are respectively connected between the two pairs of connecting shafts 320, a second installation opening 331 is opened on the connecting sleeve 330, the fixed plate 310 is penetrated through the second installation opening 331, first installation openings 311 are opened at both ends of the fixed plate 310, and the two groups of rotating wheels 340 are respectively rotatably installed in the two first installation openings 311.

[0043] In one embodiment, a long hole 161 is opened on the side plate 160, and the two ends of the connecting shaft 320 are respectively inserted into two opposite long holes 161, a second mounting cover 350 is arranged in the middle of the fixing plate 310, and a spring 360 is arranged between the second mounting cover 350 and the bottom surface of the third mounting cavity 180.

[0044] The fixing plate 310 will bend when subjected to force, and the two ends of the fixing plate 310 are bent toward the central axis of the first annular housing 110 under normal conditions. Since the fixing plate 310 is normally arranged in a curved structure, the rotating wheel 340 installed at the end of the fixing plate 310 will protrude from the third installation cavity 180 before the fixing plate 310, and the surface of the rotating wheel 340 is provided with a plurality of limiting grooves 341 in an annular array, and the setting of the limiting grooves 341 is used to increase the walking ability of the rotating wheel 340 on the pipeline surface.

[0045] In one embodiment, a driving motor is disposed in the second installation cavity 170 , and a driving shaft of the driving motor passes through the side plate 160 and is transmission-connected to the rotating wheel 340 , so as to drive the rotating wheel 340 to rotate.

[0046] In one embodiment, a plurality of first mounting covers 140 are arranged in a circular array on the outer surface of the first annular shell 110, the first mounting cover 140 is located between two adjacent third mounting cavities 180, a positioning tube 150 is arranged in the second mounting cavity 170 opposite to the first mounting cover 140, and a fourth mounting cavity 190 is formed between the first mounting cover 140 and the positioning tube 150.

[0047] Specifically, the positioning pipe 150 is connected to the connecting portion 220 through a hose, a pneumatic component 400 is installed in the fourth installation cavity 190 , a water inlet end of the pneumatic component 400 is connected to the positioning pipe 150 , and a water outlet end of the pneumatic component 400 passes through the first installation cover 140 .

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A submarine oil and gas pipeline maintenance device, characterized in that: include: The waterproof shell is arranged in a ring-shaped structure, and both ends are penetrated for inserting the pipeline; Two sealing airbags are respectively arranged at two ends of the waterproof housing. After the sealing airbags are inflated, they will fit on the surface of the pipe inserted into the waterproof housing to achieve sealing of the two ends of the waterproof housing; A plurality of crawlers are installed in the waterproof housing in a circular array and are used for climbing the pipeline; A pneumatic component, disposed in the waterproof housing, for pumping out seawater inside the waterproof housing after both ends of the waterproof housing are sealed; An inspection component is arranged in the waterproof housing and is used to inspect the pipeline in the inner area of ​​the waterproof housing after the seawater in the waterproof housing is pumped out; The waterproof housing comprises a first annular housing, two second annular housings and an annular plate; the cross section of the second annular housing is arranged in a semicircular structure, the two second annular housings are respectively located at the two ends of the first annular housing, and the outermost circle of the second annular housing is connected to the inner surface of the first annular housing, the annular plate is located in the first annular housing, and the two ends of the annular plate are respectively connected to one end of the two second annular housings, and a second installation cavity arranged in an annular structure is formed between the first annular housing, the two second annular housings and the annular plate; A first installation cavity is formed in the second annular shell, and the sealing airbag includes an annular portion and a connecting portion, the annular portion is located in the first installation cavity, one side of the connecting portion is connected to the inside of the annular portion, and the other side is fixed to the surface of the first installation cavity; A plurality of groups of side plates are arranged in an annular array in the second installation cavity, wherein each group includes four side plates, and the side ends of the four side plates are sequentially connected to form a rectangular space with upper and lower openings, the bottom end of the rectangular space abuts against the first annular shell, and the top end of the rectangular space passes through the annular plate to form a third installation cavity with a top opening; The crawler comprises a fixed plate, two pairs of connecting shafts, two connecting sleeves and two groups of rotating wheels; the fixed plate is located in the third mounting cavity, the two pairs of connecting shafts are respectively located at the front and rear ends of the fixed plate, the two connecting sleeves are respectively connected between the two pairs of connecting shafts, a second mounting opening is provided on the connecting sleeve, the fixed plate is passed through the second mounting opening, the first mounting openings are provided at both ends of the fixed plate, and the two groups of rotating wheels are respectively rotatably mounted in the two first mounting openings; The fixing plate will bend when subjected to force, and both ends of the fixing plate are bent toward the central axis of the first annular housing under normal conditions; Since the fixed plate is normally arranged in a curved structure, the rotating wheel installed at the end of the fixed plate will protrude from the third installation cavity before the fixed plate, and the surface of the rotating wheel is provided with a plurality of limiting grooves in a circular array, and the setting of the limiting grooves is used to increase the walking ability of the rotating wheel on the pipeline surface; The side plate is provided with a long hole, and the two ends of the connecting shaft are respectively inserted into two opposite long holes. A second mounting cover is provided in the middle of the fixing plate, and a spring is provided between the second mounting cover and the bottom surface of the third mounting cavity.

2. The submarine oil and gas pipeline maintenance device according to claim 1, characterized in that: The outer surface of the first annular shell is provided with a plurality of first mounting covers in an annular array, the first mounting cover is located between two adjacent third mounting cavities, a positioning pipe fitting is provided in the second mounting cavity at a position opposite to the first mounting cover, and a fourth mounting cavity is formed between the first mounting cover and the positioning pipe fitting.

3. The submarine oil and gas pipeline maintenance device according to claim 2 is characterized in that: The positioning pipe is connected to the connecting part through a hose, the pneumatic part is installed in the fourth installation cavity, the water inlet end of the pneumatic part is connected to the positioning pipe, and the water outlet end of the pneumatic part passes through the first installation cover.

4. The submarine oil and gas pipeline maintenance device according to claim 3 is characterized in that: A driving motor is arranged in the second installation cavity, and a driving shaft of the driving motor passes through the side plate and is drivingly connected to the rotating wheel for driving the rotating wheel to rotate.

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