Self-protection digital ray detection system suitable for submarine pipeline laying

Abstract

The invention relates to the technical field of ray detection systems, in particular to a self-protection digital ray detection system suitable for submarine pipeline laying. Centering supporting modules are arranged in a bilateral symmetry mode and are annular, and the tops of the left part and the right part of each centering supporting module are rotationally connected; when the left part and the right part of the centering supporting module rotate outwards at the same time, the centering supporting module is opened, and when the left part and the right part of the centering supporting module rotate inwards at the same time, the centering supporting module is closed; opening and closing of the whole system are controlled through the opening and closing lifting module. The driven sliding rail module is driven by the motor to rotate along the centering outer rail gear ring, and circumferential detection of the circumferential weld of the pipeline is achieved. And the internal lead shielding layer can realize ray radiation self-protection and prevent rays from leaking to cause radiation to operators and influence the health of the operators. The ray radiation protection range is smaller than three meters, the requirement for cross operation of offshore construction ships can be met, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of ray detection systems, and in particular to a self-protection digital ray detection system suitable for laying submarine pipelines. Background Art

[0002] Welding is a manufacturing process that connects materials (usually metals, but also some non-metallic materials such as plastics) by heating or pressurizing, or both, with or without filler materials. A weld is formed when two or more pieces of material are connected by welding. The weld is a permanent connection formed after the molten parent material (sometimes also filler material) cools and solidifies during the welding process. The quality of the weld directly affects the overall strength, durability and safety of the welded structure, so it occupies a very important position in welding engineering. In order to ensure the quality of the weld, strict inspection and testing are usually required, such as appearance inspection, non-destructive testing (X-ray, ultrasonic testing, etc.) and mechanical property testing. In addition, the design of the weld also needs to consider factors such as stress distribution in actual applications and the performance of the heat-affected zone to avoid failures during use.

[0003] There is currently no effective means of detecting partially completed welds of submarine pipelines, especially partially completed welds of bimetallic composite materials. In addition, due to the small operating space of pipe-laying vessels, traditional radiographic detection cannot provide effective radiation protection and cannot meet the cross-operation conditions of offshore vessels. In order to improve the detection efficiency and accuracy of bimetallic composite submarine pipeline circumferential welds, it is necessary to invent a digital radiographic detection system that meets the offshore ship construction environment, can provide self-protection against radiation, and has a high detection efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a self-protection digital radiation detection system suitable for submarine pipeline laying, so as to solve the problems proposed in the related art that radiation self-protection cannot be performed and the efficiency is low.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, there is provided a self-protection digital radiation detection system suitable for submarine pipeline laying, comprising: a centering support module, the centering support module is arranged symmetrically on the left and right and is in a ring shape, the tops of the left and right parts of the centering support module are rotatably connected, when the left and right parts of the centering support module are simultaneously rotated outward, the centering support module is opened, and when the left and right parts of the centering support module are simultaneously rotated inward, the centering support module is closed; A locking module, which is fixedly arranged at the bottom of the centering support module and is used to control the closed state of the centering support module. When the locking module is opened, the left and right parts of the centering support module are separated. When the locking module is closed, the left and right parts of the centering support module are adsorbed together by the locking module. A hoisting module, which is rotatably arranged on the top of the centering support module, provides power for the centering support module, and when the hoisting module moves upward, pulls the left and right parts of the centering support module to rotate outward, and when the hoisting module moves downward, pushes the left and right parts of the centering support module to rotate inward; A ray module, which is fixed to the bottom of the centering support module and is used to emit detection rays; The ray shielding module is arranged symmetrically on the left and right and is ring-shaped. The top of the ray shielding module is rotatably connected. The ray shielding module is fixed to the inner circle of the centering support module and is used to shield the rays emitted by the ray module.

[0006] Furthermore, the centering support module includes a centering outer rail, a hinge base, an outer rail bracket group and an opening and closing assembly, the outer rail bracket group includes a first centering outer rail fixing bracket, a second centering outer rail fixing bracket, a third centering outer rail fixing bracket and a fourth centering outer rail fixing bracket, the centering outer rail is divided into left and right parts, the hinge base is rotatably arranged on the top of the left and right parts of the centering outer rail, the first centering outer rail fixing bracket is fixedly arranged on the upper right side of the centering outer rail, the fourth centering outer rail fixing bracket is fixedly arranged on the lower right side of the centering outer rail, the second centering outer rail fixing bracket is fixedly arranged on the upper left side of the centering outer rail, and the third centering outer rail fixing bracket is fixedly arranged on the lower left side of the centering outer rail.

[0007] Furthermore, the opening and closing assembly includes a power assembly, a slide rail assembly, a gear assembly and a high-voltage generator assembly, the power assembly includes a first synchronous motor, a second synchronous motor and a plurality of synchronous belts, the slide rail assembly includes a first driven slide rail, a plurality of centering modules and a second driven slide rail, the gear assembly includes a plurality of centering idler wheels, a plurality of eccentric idler wheels, a gear ring and a plurality of gears, and the high-voltage generator assembly includes a first high-voltage generator, a second high-voltage generator and two high-voltage generator brackets.

[0008] Furthermore, the centering modules are all slidably arranged in the middle of the inner side of the centering outer rail, the gear ring is fixedly arranged on the inner side of the centering outer rail, and the gears are all rotatably arranged on the outer surface of the centering outer rail and meshed with the gear ring.

[0009] Furthermore, the centering idler wheel and the eccentric idler wheel are both rotatably arranged on the centering outer rail, and the first driven slide rail and the second driven slide rail are both assembled on the gear ring through the eccentric idler wheel.

[0010] Further, the first synchronous motor is fixed on the second driven slide rail, the second high-voltage generator is fixed on the second driven slide rail through a high-voltage generator bracket, the second synchronous motor is fixed on the first driven slide rail, the first high-voltage generator is fixed on the first driven slide rail through a high-voltage generator bracket, the first high-voltage generator and the second high-voltage generator are arranged symmetrically along the center, and the synchronous belt is respectively mounted on the first synchronous motor and the outer side of the gear on the same side, and the second synchronous motor and the outer side of the gear on the same side.

[0011] Furthermore, the locking module includes a magnetic block and a connection sensing switch, the magnetic block is fixedly arranged at the bottom of one side of the centering outer rail, and the connection sensing switch is fixedly arranged between the centering outer rail and the first driven slide rail.

[0012] Furthermore, the lifting module includes a lifting device and several arms, the top ends of the arms are rotatably connected to the bottom ends of the lifting device, the bottom ends of some arms are rotatably connected to the first centering outer rail fixing bracket, and the bottom ends of other arms are rotatably connected to the second centering outer rail fixing bracket.

[0013] Furthermore, the radiation module includes a radiation machine assembly and a cable assembly, the radiation machine assembly includes a radiation machine, a radiation machine base and a radiation machine protective cover, the cable assembly includes a cable and a plurality of cable clips, the radiation machine protective cover is fixed to the bottom of the centering outer rail through the radiation machine base, the radiation machine is fixed in the radiation machine protective cover, the first high-voltage generator and the second high-voltage generator are both connected to the radiation machine through cables, and the cable clips are used to fix the cables.

[0014] Furthermore, the radiation shielding module includes a shielding component, a detector and an air cooling system. The shielding component includes a radiation shielding layer, a radiation shielding layer bracket and a radiation directional hole. The radiation shielding layer is fixed on the first driven slide rail through the radiation shielding layer bracket and is located around the radiation machine. The detector is fixed on the inner side of the radiation shielding layer. The detector and the radiation machine are arranged symmetrically along the center. A radiation directional hole is provided at the radiation outlet of the radiation machine. The air cooling system is fixed on the inner side of the radiation shielding layer.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the opening and closing of the whole system is controlled by the opening and closing lifting module. The driven slide rail module is driven by the motor to rotate along the centering outer rail gear ring to realize the circumferential detection of the pipeline ring weld. The internal lead shielding layer can realize self-protection of radiation radiation, prevent radiation leakage, cause radiation to the operator, and affect his health. The radiation protection range is less than three meters, which can meet the cross-operation requirements of offshore construction ships, and the detection efficiency and accuracy are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is the front view of the overall structure of the present invention; Figure 2 It is a left view of the overall structure of the present invention; Figure 3 It is a schematic diagram of a driven slide rail module of the present invention; Figure 4 It is a schematic diagram of radiation protection of the present invention.

[0017] Illustration Description: 1. Lifting device; 2. Boom; 3. First centering outer rail fixing bracket; 4. Second centering outer rail fixing bracket; 5. Third centering outer rail fixing bracket; 6. Fourth centering outer rail fixing bracket; 7. Centering outer rail; 8. First synchronous motor; 9. Magnetic block; 10. Radiation shielding layer; 11. Radiation machine; 12. Second synchronous motor; 13. First driven slide rail; 14. First high-voltage generator; 15. Hinge base; 16. Centering module; 17. Centering idler wheel; 18. Eccentric idler wheel; 19. Second driven slide rail; 20. Second high-voltage generator; 21. Cable; 22. High-voltage generator bracket; 23. Connection induction switch; 24. Cable clip; 25. Radiation machine base; 26. Radiation shielding layer bracket; 27. Gear ring; 28. Gear; 29. ​​Synchronous belt; 30. Detector; 31. Air cooling system; 32. Radiation machine protective cover; 33. Radiation directional hole. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] See also Figures 1 to 4 The present embodiment provides a self-protection digital radiation detection system suitable for submarine pipeline laying, including: a centering support module, the centering support module is arranged symmetrically on the left and right and is in a ring shape, the tops of the left and right parts of the centering support module are rotatably connected, when the left and right parts of the centering support module are rotated outward at the same time, the centering support module is opened, and when the left and right parts of the centering support module are rotated inward at the same time, the centering support module is closed; The locking module is fixedly arranged at the bottom of the centering support module and is used to control the closing state of the centering support module. When the locking module is opened, the left and right parts of the centering support module are separated. When the locking module is closed, the left and right parts of the centering support module are adsorbed together by the locking module. The lifting module is rotatably arranged on the top of the centering support module, providing power for the centering support module. When the lifting module moves upward, the left and right parts of the centering support module are pulled to rotate outward, and when the lifting module moves downward, the left and right parts of the centering support module are pushed to rotate inward; A ray module, which is fixed at the bottom of the centering support module and is used to emit detection rays; The ray shielding module is arranged symmetrically on the left and right and is ring-shaped. The top of the ray shielding module is rotatably connected. The ray shielding module is fixed to the inner circle of the centering support module and is used to shield the rays emitted by the ray module.

[0020] The centering support module includes a centering outer rail 7, a hinge base 15, an outer rail bracket group and an opening and closing component. The outer rail bracket group includes a first centering outer rail fixing bracket 3, a second centering outer rail fixing bracket 4, a third centering outer rail fixing bracket 5 and a fourth centering outer rail fixing bracket 6. The centering outer rail 7 is divided into two left and right parts. The hinge base 15 is rotatably arranged on the top of the left and right parts of the centering outer rail 7. The first centering outer rail fixing bracket 3 is fixedly arranged on the upper right side of the centering outer rail 7, the fourth centering outer rail fixing bracket 6 is fixedly arranged on the lower right side of the centering outer rail 7, the second centering outer rail fixing bracket 4 is fixedly arranged on the upper left side of the centering outer rail 7, and the third centering outer rail fixing bracket 5 is fixedly arranged on the lower left side of the centering outer rail 7.

[0021] The opening and closing assembly includes a power assembly, a slide rail assembly, a gear assembly and a high-voltage generator assembly. The power assembly includes a first synchronous motor 8, a second synchronous motor 12 and a plurality of synchronous belts 29. The slide rail assembly includes a first driven slide rail 13, a plurality of centering modules 16 and a second driven slide rail 19. The gear assembly includes a plurality of centering idler wheels 17, a plurality of eccentric idler wheels 18, a ring gear 27 and a plurality of gears 28. The high-voltage generator assembly includes a first high-voltage generator 14, a second high-voltage generator 20 and two high-voltage generator brackets 22.

[0022] The centering modules 16 are all slidably arranged in the middle of the inner side of the centering outer rail 7. The length of the centering module 16 extending into the inner side of the centering outer rail 7 can be adjusted to adapt to metal pipes of different diameters. The gear ring 27 is fixedly arranged on the inner side of the centering outer rail 7, and the gears 28 are all rotatably arranged on the outer surface of the centering outer rail 7 and meshed with the gear ring 27.

[0023] The centering idler wheel 17 and the eccentric idler wheel 18 are both rotatably arranged on the centering outer rail 7. The centering idler wheel 17 and the eccentric idler wheel 18 are both V-shaped to ensure that the equipment maintains concentric rotation. The first driven rail 13 and the second driven rail 19 are both assembled on the ring gear 27 through the eccentric idler wheel 18 to realize the circumferential rotation of the first driven rail 13 and the second driven rail 19.

[0024] The first synchronous motor 8 is fixed on the second driven rail 19, the second high-voltage generator 20 is fixed on the second driven rail 19 through the high-voltage generator bracket 22, the second synchronous motor 12 is fixed on the first driven rail 13, the first high-voltage generator 14 is fixed on the first driven rail 13 through the high-voltage generator bracket 22, the first high-voltage generator 14 and the second high-voltage generator 20 are arranged symmetrically along the center, the synchronous belt 29 is respectively sleeved on the first synchronous motor 8 and the outer side of the gear 28 on the same side, the second synchronous motor 12 and the outer side of the gear 28 on the same side, the first synchronous motor 8 and the second synchronous motor 12 drive the gear 28 to rotate through the synchronous belt 29, the first synchronous motor 8 and the second synchronous motor 12 adopt the same connection and driving method, and jointly drive the first driven rail 13 and the second driven rail 19 to rotate.

[0025] The locking module includes a magnetic block 9 and a connection sensing switch 23. The magnetic block 9 is fixedly arranged at the bottom of one side of the centering outer rail 7. The magnetic block 9 is connected to a power supply. After the power is turned on, the magnetic block 9 generates electromagnetic induction, and the opening and closing of the centering outer rails 7 on the left and right sides are controlled by electromagnetic induction. The connection sensing switch 23 is fixedly arranged between the centering outer rail 7 and the first driven slide rail 13. The connection sensing switch 23 controls the connection status of the magnetic block 9 and the power supply. When the lifting device 1 rises upward, the connection sensing switch 23 is triggered to start, the magnetic block 9 is disconnected from the power supply, the electromagnetic induction disappears, the left and right sides of the centering outer rail 7 are opened, and they rotate upward with the boom 2 respectively. The equipment is turned on, and the metal pipe to be tested for the weld can be placed in the equipment. After the metal pipe is placed in the equipment, the lifting device 1 moves downward, and the connection sensing switch 23 is triggered again. The magnetic block 9 is connected to the power supply to generate electromagnetic induction, and the bottoms of the left and right sides of the centering outer rail 7 are adsorbed together to fix the metal pipe inside the equipment.

[0026] The lifting module includes a lifting device 1 and several arms 2. The lifting device 1 is provided with a motor for driving the lifting device 1 to rise or fall. The top ends of the arms 2 are rotatably connected to the bottom ends of the lifting device 1, the bottom ends of some arms 2 are rotatably connected to the first centering outer rail fixing bracket 3, and the bottom ends of other arms 2 are rotatably connected to the second centering outer rail fixing bracket 4.

[0027] The radiation module includes a radiation machine assembly and a cable assembly. The radiation machine assembly includes a radiation machine 11, a radiation machine base 25 and a radiation machine protective cover 32. The cable assembly includes a cable 21 and a plurality of cable clips 24. The radiation machine protective cover 32 is fixed to the bottom of the centering outer rail 7 through the radiation machine base 25. The radiation machine 11 is fixed in the radiation machine protective cover 32. The first high-voltage generator 14 and the second high-voltage generator 20 are both connected to the radiation machine 11 through the cable 21. The first high-voltage generator 14 and the second high-voltage generator 20 are both connected to the power control cabinet through the cable 21. The cable clip 24 is used to fix the cable 21.

[0028] The radiation shielding module includes a shielding component, a detector 30 and an air cooling system 31. The shielding component includes a radiation shielding layer 10, a radiation shielding layer bracket 26 and a radiation directional hole 33. The radiation shielding layer 10 is fixed on the first driven slide rail 13 through the radiation shielding layer bracket 26 and is located around the radiation machine 11 to prevent radiation from being emitted from the radiation shielding layer 10, thereby realizing radiation radiation protection. The detector 30 is fixed on the inner side of the radiation shielding layer 10. The detector 30 and the radiation machine 11 are arranged symmetrically along the center. A radiation directional hole 33 is provided at the radiation outlet of the radiation machine 11. The air cooling system 31 is fixed on the inner side of the radiation shielding layer 10 to cool the detector 30. The radiation shielding layer 10 is made of lead to effectively isolate radiation and prevent radiation from leaking from the radiation shielding layer 10.

[0029] Start the motor of the lifting device 1, the motor drives the lifting device 1 to rise, triggers the connection induction switch 23 to start, the magnetic block 9 is disconnected from the power supply, the electromagnetic induction disappears, the left and right sides of the centering outer rail 7 are opened, and they rotate upward with the boom 2 respectively, the equipment is turned on, and the metal pipe whose weld is to be tested is placed in the equipment. After the metal pipe is placed in the equipment, the center of the metal pipe weld is aligned with the center of the equipment, the motor drives the lifting device 1 to move downward, and triggers the connection induction switch 23 again, the magnetic block 9 is connected to the power supply, electromagnetic induction is generated, and the bottom of the left and right sides of the centering outer rail 7 are adsorbed together, and the metal pipe is fixed inside the equipment. , open the power control cabinet, connect the power to the first high-voltage generator 14 and the second high-voltage generator 20, the first high-voltage generator 14 and the second high-voltage generator 20 act on the X-ray machine 11, so that the X-ray machine 11 emits radiation, and the radiation emitted by the X-ray machine 11 enters the radiation shielding layer 10 through the radiation directional hole 33, and is imaged on the detector 30 through the weld of the metal pipe to be inspected. The image is displayed on the computer display screen, thereby realizing the X-ray detection of the pipeline weld by the equipment, and the radiation shielding layer 10 seals the radiation inside the radiation shielding layer 10 to prevent the radiation from leaking out, causing radiation to the operator and affecting his health.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A self-protection digital ray detection system suitable for submarine pipeline laying, characterized in that: include: A centering support module, the centering support module is arranged symmetrically on the left and right and is in a ring shape, the tops of the left and right parts of the centering support module are rotatably connected, when the left and right parts of the centering support module are simultaneously rotated outward, the centering support module is opened, and when the left and right parts of the centering support module are simultaneously rotated inward, the centering support module is closed; A locking module, which is fixedly arranged at the bottom of the centering support module and is used to control the closed state of the centering support module. When the locking module is opened, the left and right parts of the centering support module are separated. When the locking module is closed, the left and right parts of the centering support module are adsorbed together by the locking module. A hoisting module, which is rotatably arranged on the top of the centering support module, provides power for the centering support module, and when the hoisting module moves upward, pulls the left and right parts of the centering support module to rotate outward, and when the hoisting module moves downward, pushes the left and right parts of the centering support module to rotate inward; A ray module, which is fixed to the bottom of the centering support module and is used to emit detection rays; The ray shielding module is arranged symmetrically on the left and right and is ring-shaped. The top of the ray shielding module is rotatably connected. The ray shielding module is fixed to the inner circle of the centering support module and is used to shield the rays emitted by the ray module.

2. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 1 is characterized in that: The centering support module comprises a centering outer rail (7), a hinge base (15), an outer rail bracket group and an opening and closing assembly, wherein the outer rail bracket group comprises a first centering outer rail fixing bracket (3), a second centering outer rail fixing bracket (4), a third centering outer rail fixing bracket (5) and a fourth centering outer rail fixing bracket (6), wherein the centering outer rail (7) is divided into a left part and a right part, wherein the hinge base (15) is rotatably arranged at the top of the left and right parts of the centering outer rail (7), wherein the first centering outer rail fixing bracket (3) is fixedly arranged at the upper right side of the centering outer rail (7), wherein the fourth centering outer rail fixing bracket (6) is fixedly arranged at the lower right side of the centering outer rail (7), wherein the second centering outer rail fixing bracket (4) is fixedly arranged at the upper left side of the centering outer rail (7), and wherein the third centering outer rail fixing bracket (5) is fixedly arranged at the lower left side of the centering outer rail (7).

3. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 2 is characterized in that: The opening and closing assembly comprises a power assembly, a slide rail assembly, a gear assembly and a high-voltage generator assembly. The power assembly comprises a first synchronous motor (8), a second synchronous motor (12) and a plurality of synchronous belts (29). The slide rail assembly comprises a first driven slide rail (13), a plurality of centering modules (16) and a second driven slide rail (19). The gear assembly comprises a plurality of centering idler wheels (17), a plurality of eccentric idler wheels (18), a gear ring (27) and a plurality of gears (28). The high-voltage generator assembly comprises a first high-voltage generator (14), a second high-voltage generator (20) and two high-voltage generator brackets (22).

4. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 3 is characterized in that: The centering modules (16) are all slidably disposed in the middle of the inner side of the centering outer rail (7), the gear ring (27) is fixedly disposed on the inner side of the centering outer rail (7), and the gears (28) are all rotatably disposed on the outer surface of the centering outer rail (7) and mesh with the gear ring (27).

5. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 3 is characterized in that: The centering idler wheel (17) and the eccentric idler wheel (18) are both rotatably arranged on the centering outer rail (7), and the first driven slide rail (13) and the second driven slide rail (19) are both assembled on the gear ring (27) via the eccentric idler wheel (18).

6. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 3 is characterized in that: The first synchronous motor (8) is fixedly mounted on the second driven slide rail (19), the second high-voltage generator (20) is fixedly mounted on the second driven slide rail (19) via a high-voltage generator bracket (22), the second synchronous motor (12) is fixedly mounted on the first driven slide rail (13), the first high-voltage generator (14) is fixedly mounted on the first driven slide rail (13) via a high-voltage generator bracket (22), the first high-voltage generator (14) and the second high-voltage generator (20) are symmetrically arranged along the center, and the synchronous belt (29) is respectively sleeved on the first synchronous motor (8) and the outer side of the gear (28) on the same side, and the second synchronous motor (12) and the outer side of the gear (28) on the same side.

7. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 3 is characterized in that: The locking module comprises a magnetic block (9) and a connection sensing switch (23); the magnetic block (9) is fixedly arranged at the bottom of one side of the centering outer rail (7); and the connection sensing switch (23) is fixedly arranged between the centering outer rail (7) and the first driven slide rail (13).

8. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 2 is characterized in that: The lifting module comprises a lifting device (1) and a plurality of lifting arms (2), the top ends of the lifting arms (2) are rotatably connected to the bottom ends of the lifting device (1), the bottom ends of a portion of the lifting arms (2) are rotatably connected to a first centering outer rail fixing bracket (3), and the bottom ends of another portion of the lifting arms (2) are rotatably connected to a second centering outer rail fixing bracket (4).

9. The self-protection digital ray detection system suitable for submarine pipeline laying according to claim 6, characterized in that: The radiation module comprises a radiation machine assembly and a cable assembly. The radiation machine assembly comprises a radiation machine (11), a radiation machine base (25) and a radiation machine protective cover (32). The cable assembly comprises a cable (21) and a plurality of cable clamps (24). The radiation machine protective cover (32) is fixedly arranged at the bottom of a centering outer rail (7) via the radiation machine base (25). The radiation machine (11) is fixedly arranged in the radiation machine protective cover (32). The first high-voltage generator (14) and the second high-voltage generator (20) are both connected to the radiation machine (11) via the cable (21). The cable clamps (24) are used to fix the cable (21).

10. The self-protection digital radiation detection system suitable for submarine pipeline laying according to claim 7, characterized in that: The radiation shielding module comprises a shielding component, a detector (30) and an air cooling system (31); the shielding component comprises a radiation shielding layer (10), a radiation shielding layer bracket (26) and a radiation orientation hole (33); the radiation shielding layer (10) is fixedly arranged on a first driven slide rail (13) via the radiation shielding layer bracket (26) and is located around a radiation machine (11); the detector (30) is fixedly arranged on the inner side of the radiation shielding layer (10); the detector (30) and the radiation machine (11) are arranged symmetrically along the center; a radiation orientation hole (33) is provided at a radiation outlet of the radiation machine (11); and the air cooling system (31) is fixedly arranged on the inner side of the radiation shielding layer (10).

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