Subsea umbilical cable penetration test device and method

Abstract

The present application belongs to the technical field of submarine cable penetration detection, especially a kind of submarine umbilical cable penetration test device and method, the existing sealing detection device is often only carried out pressure test when carrying out sealing detection, and the submarine is ignored There are other various uncertain impact damage problems, the following scheme is presented, including bearing fixing frame, the bearing fixing frame includes two different installation planes, the high installation plane of bearing fixing frame is fixed with baffle card seat, the sealing element fixing mechanism that is adapted to the penetration sealing element is arranged on baffle card seat, and the sealing element fixing mechanism includes fixed baffle frame, and the middle of fixed baffle frame is provided with round hole.This application can test the impact on the moving piston rod, which can generate a huge thrust on the surge simulation mechanism end, cooperate with the module floating in brine, can produce water pressure and can produce collision at the sealing element, and can simulate the real situation of submarine to the greatest extent.

Description

Technical Field

[0001] This invention relates to the field of submarine cable penetration testing technology, and in particular to a submarine umbilical cable penetration testing device and method. Background Technology

[0002] Ocean (sea), a geographical term, is the collective name for the most extensive body of water on Earth. The Earth's surface is divided into vast, interconnected bodies of water by continents, known as oceans. The central part of an ocean is called a sea, and the peripheral parts are called seas, forming a unified body of water. The four major oceans are the Pacific, Atlantic, Indian, and Arctic Oceans, mostly bounded by landmasses and seafloor topography. Currently, humans have only explored 5% of the seabed, leaving 95% unknown. An umbilical cable is a combination of electrical cables (power or signal cables), optical cables (single-mode or multi-mode optical cables), and hydraulic or chemical conduits (steel pipes or hoses); it is primarily used for deep-sea oil and gas exploration and development, such as the transmission of electricity, signals, and data, and the transport of chemicals and liquids between the seabed and the deep-sea exploration platform (DPP).

[0003] The main functions of the umbilical cable are: 1. to provide power to the subsea production system; 2. to provide a hydraulic channel for the control of the subsea production system; 3. to provide chemical pipelines required for oil and gas field development; and 4. to transmit control signals from the upper module and sensor data from the subsea production system. This product consists of static and dynamic components and can be customized into single or segmented umbilical cables integrating static and dynamic components according to customer requirements. The original international flexible hose technology has been upgraded to stainless steel tubing, greatly increasing its corrosion resistance and other functions. This product has considerable strength, can withstand tension and external pressure during laying or retrieval, and has high reliability.

[0004] Currently, a large number of electrical devices are needed on offshore platform supply vessels and other fixed and mobile offshore platforms, requiring a large current and large-diameter cables for power transmission. For example, in the construction of submarine tunnels, the last section of the immersed tube is called the final joint. The installation of the final joint requires the cooperation of many devices such as cameras, lighting, and measurement and control equipment. The installation of these devices requires cables to pass through the steel sealing gate inside the immersed tube, and both the inside and outside of the steel sealing gate are subject to water pressure, which will affect the sealing reliability of the cables. Often, these through-tank seals need to be tested for sealing performance.

[0005] Research indicates that existing sealing testing devices often only perform pressure tests, neglecting other uncertain impact damage that may occur on the seabed. This can also affect the sealing effect at the sealing location. Therefore, these factors cannot be ignored when conducting penetration tests. Summary of the Invention

[0006] This invention proposes a submarine umbilical cable penetration testing device, comprising a support frame with two mounting planes of different heights. A baffle seat is fixed on the higher mounting plane of the support frame, and a sealing element fixing mechanism adapted to the penetration seal is provided on the baffle seat. The sealing element fixing mechanism includes a fixed baffle frame with a circular hole in the center. A conical abutment tube is welded to the side of the fixed baffle frame away from the penetration seal. A surge simulation mechanism is connected to the side of the conical abutment tube away from the fixed baffle frame. The surge simulation mechanism includes an arc-shaped tube connected to the end of the conical abutment tube. A large-diameter cylindrical barrel with an upward opening is fixed to the bottom end of the arc-shaped tube, and the bottom of the large-diameter cylindrical barrel is connected to... The device features an upward-pointing pressure-resistant connecting pipe, the top of which is connected to a vertical piston pipe. The top of the piston pipe is connected to an impact bend, and the top of the impact bend is slidably connected to a moving piston rod. A piston top plate is slidably connected inside a large-diameter cylinder. The upper and lower sides of the piston top plate are respectively filled with brine and hydraulic oil, and the upper and lower sides of the piston top plate are not connected. Wood blocks are mixed into the brine. Through the large-diameter cylinder and the impact bend serving as the power source, a huge thrust can be generated at the surge simulation mechanism by impacting the moving piston rod during testing. Combined with the module floating in the brine, this generates both water pressure and collisions with the seals, simulating the real-world underwater environment to the greatest extent possible.

[0007] A further feature of this invention is that the sealing element fixing mechanism includes fixing holes symmetrically distributed near the center of the fixing baffle frame. Each fixing hole is fixed with an internally threaded tube, and each internally threaded tube is screwed with a self-locking screw. A pressure cap is fixed to the end of each self-locking screw near the through-chamber seal, and an actuating rod is inserted into the circumferential edge of each pressure cap. The actuating rod and pressure cap make it easier and tighter to connect the through-chamber seal and the fixing baffle frame, thus improving the sealing effect.

[0008] A further feature of this invention is that a counternut is screwed onto the side of the self-locking screw away from the pressure cap, and a sealing ring is fixed to the side of the fixed baffle frame near the edge of the circular hole on the side of the through-chamber seal. By combining the counternut and the sealing ring, the tightness of the pressure on the end of the through-chamber seal and the anti-detachment effect can be increased.

[0009] A further feature of the present invention is that a feeding pipe is inserted into the outer circumference of the conical abutment near the top, and a cap is screwed to the top of the feeding pipe; the feeding pipe makes it more convenient to add the impact block in the surge simulation mechanism.

[0010] A further feature of this invention is that an observation window is provided on the side of the arc-shaped tube, and an explosion-proof glass is snapped into the observation window; and a horizontally arranged stirring motor is fixed on the side of the supporting frame, and a transmission rod extending into the arc-shaped tube is fixed to the top of the output shaft of the stirring motor through a coupling, and a stirring blade is fixed to the end of the transmission rod; the stirring blades allow the mixed materials inside to be more uniform, and prevent small pieces from colliding during impact.

[0011] A further feature of this invention is that a fixed saddle is fixed to the side of the bearing fixing frame, and the outer wall of the large-diameter cylindrical tube is snapped onto the fixed saddle; a transverse fixing plate is also fixed to the side of the bearing fixing frame, and a clamp adapted to the diameter of the piston tube is fixed to the surface of the transverse fixing plate; the provision of the transverse fixing plate improves the impact resistance level of the impact bend and enhances the overall stability of the device.

[0012] A further feature of this invention is that a vertical L-shaped fixing plate and a slide rail fixing block are respectively fixed to the upper surface of the bearing fixing frame near the rear edge. A downward-opening grooved slide rail is fixed to the side of the slide rail fixing block away from the through-chamber seal. A push rod is slidably connected within the groove of the grooved slide rail. A connecting block is fixed to the side of the push rod near its top end. An arc-shaped top rod is fixed to the other end of the connecting block. The top end of the arc-shaped top rod is fixed to the moving piston top rod. The arc-shaped top rod, the grooved slide rail, and the impact bend are concentric. A transmission stop is fixed to the side of the push rod near its top end. The side of the grooved slide rail has a strip-shaped hole for the transmission stop to slide; the outer arc side of the push rod has self-locking teeth distributed at equal intervals, and the back of the grooved slide rail has a rectangular hole near the bottom. A backstop lock rod is hinged in the rectangular hole. An extension plate is fixed to the bottom of the grooved slide rail, and a clamping spring is fixed between the extension plate and the bottom of the backstop lock rod. With the backstop lock rod and the push rod, when it is necessary to impact the moving piston rod during use, it can be pushed hard along the movement trajectory of the push rod, and then the force is amplified and transmitted through the internal hydraulic oil.

[0013] A further feature of this invention is that a bearing seat is fixed to the back of the L-shaped fixing plate near the center, and a horizontally arranged long shaft is rotatably connected inside the bearing seat. An impact plate and a driven gear are fixed to the ends of the long shaft, respectively. A reduction motor is also fixed to the side of the L-shaped fixing plate below the bearing seat. A half gear is fixed to the top of the output shaft of the reduction motor, and the half gear meshes with the driven gear. An electric push rod extending obliquely downward is fixed to the top of the L-shaped fixing plate, and a spring fixing block is fixed to the end of the extension rod of the electric push rod. A tension spring is fixed between the lower surface of the spring fixing block and the end of the impact plate. By setting the tension spring and cooperating with the drive of the half gear, when it is necessary to impact the transmission stop, it is only necessary to control the half gear to rotate clockwise continuously.

[0014] A further feature of the present invention is that a spring fixing plate is fixed to the inner wall of the large-diameter cylinder near the top, and a return spring is fixed between the lower surface of the spring fixing plate and the piston top plate; after the locking of the anti-reverse locking rod is removed, the push rod can slowly return to its original position.

[0015] A method for testing submarine umbilical cables penetrating a cabin includes the following steps: Step 1: First, thread the cable through the chamber seal to be tested and stuff the filler into the sleeve to form the installed shape. The other end of the cable extends into the arc-shaped tube. Then, add brine and wood blocks from the feed pipe, leaving a little space so that the brine inside can generate impact. Step 2: Start the servo motor to stir the wooden blocks and other objects added inside the arc-shaped tube, so that the substances in the simulated seawater are evenly distributed. Step 3: Restart the reduction motor to drive the half gear to rotate. After the driven gear rotates to a certain angle, it will cause the impact plate to swing downwards to a certain extent. Then, it will suddenly lose the drive of the half gear and swing upwards quickly to impact the transmission stop. Subsequently, through the push of the moving piston rod, the piston top plate, which is slidably connected in the large diameter cylinder, will move upwards quickly and push the brine mixture in the arc tube towards the perforated seal, thus forming a high-pressure test.

[0016] The beneficial effects of this invention are as follows: 1. By setting up a large-diameter cylindrical barrel and an impact bend as the power end, a huge thrust can be generated at the end of the surge simulation mechanism by impacting the moving piston rod during testing. Combined with the module floating in salt water, it can generate both water pressure and collision with the seal, simulating the real situation on the seabed to the greatest extent.

[0017] 2. By setting stirring blades that extend into the inside of the arc-shaped tube, the mixture inside can be made more uniform, and small pieces of material can be avoided from colliding during impact.

[0018] 3. With the setting of the anti-reverse locking rod and the push rod, when it is necessary to impact the moving piston rod during use, you only need to push it hard along the movement trajectory of the push rod, and then the force will be amplified and transmitted through the internal hydraulic oil.

[0019] 4. By using the return spring on the piston top plate, the push rod can slowly return to its original position after the locking lever is removed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a submarine umbilical cable penetration testing device proposed in this invention; Figure 2This is a schematic diagram of the rear structure of a submarine umbilical cable penetration test device proposed in this invention; Figure 3 This is a top view of the structure of a submarine umbilical cable penetration test device proposed in this invention. Figure 4 This invention proposes a submarine umbilical cable penetration testing device. Figure 3 A partial sectional view along line AA; Figure 5 This is a side view of a submarine umbilical cable penetration testing device proposed in this invention; Figure 6 This is a schematic diagram of the impact device in a submarine umbilical cable penetration test device proposed in this invention. Figure 7 This invention provides a surge simulation mechanism for a submarine umbilical cable penetration test device.

[0021] In the diagram: 1. Bearing fixing frame; 2. Through-chamber seal; 3. Fixing baffle frame; 4. Conical abutment pipe; 5. Feed pipe; 6. Observation window; 7. L-shaped fixing plate; 8. Electric push rod; 9. Driven gear; 10. Surge simulation mechanism; 11. Impact bend; 12. Transverse fixing plate; 13. Piston pipe; 14. Pressure-resistant connecting pipe; 15. Large-diameter cylinder; 16. Fixing saddle; 17. Agitator motor; 18. Top nut; 9. Moving piston rod; 20. Arc-shaped rod; 21. Tension spring; 22. Transmission stop block; 23. Impact plate; 24. Anti-reverse locking rod; 25. Extension plate; 26. Push rod; 27. Self-locking tooth; 28. Half gear; 29. ​​Groove slide rail; 30. Slide rail fixing block; 31. Transmission rod; 32. Piston top plate; 33. Return spring; 34. Spring fixing plate; 35. Baffle seat; 36. Pressure cap; 37. Internally threaded tube. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Reference Figure 1-7A submarine umbilical cable penetration testing device includes a support frame 1, which comprises two mounting planes of different heights. A baffle seat 35 is fixed on the higher mounting plane of the support frame 1, and a sealing element fixing mechanism adapted to the penetration seal 2 is provided on the baffle seat 35. The sealing element fixing mechanism includes a fixed baffle frame 3 with a circular hole in the middle. A conical abutment tube 4 is welded to the side of the fixed baffle frame 3 away from the penetration seal 2. A surge simulation mechanism 10 is connected to the side of the conical abutment tube 4 away from the fixed baffle frame 3. The surge simulation mechanism 10 includes an arc-shaped tube connected to the end of the conical abutment tube 4. A large-diameter cylindrical barrel 15 with its opening facing upward is fixed to the bottom end of the arc-shaped tube. The bottom of the large-diameter cylindrical barrel 15 is connected to a pressure-resistant device with an upward bend. A connecting pipe 14 is provided, and the top of the pressure-resistant connecting pipe 14 is connected to a vertical piston pipe 13. The top of the piston pipe 13 is connected to an impact bend 11, and the top of the impact bend 11 is slidably connected to a moving piston rod 19. A piston top plate 32 is slidably connected inside a large-diameter cylindrical barrel 15. Salt water and hydraulic oil are respectively installed on the upper and lower sides of the piston top plate 32, and the upper and lower sides of the piston top plate 32 are not connected. Wood blocks are mixed in the salt water. Through the large-diameter cylindrical barrel 15 and the impact bend 11 as the power end, a huge thrust can be generated at the end of the surge simulation mechanism 10 by impacting the moving piston rod 19 during the test. With the module floating in the salt water, both water pressure and collision with the seal can be generated, simulating the real situation of the seabed to the greatest extent.

[0024] In this invention, the sealing element fixing mechanism further includes fixing holes that are centrally symmetrically distributed near the center of the fixing baffle frame 3. Each fixing hole is fixed with an internally threaded tube 37, and each internally threaded tube 37 is screwed with a self-locking screw. Each self-locking screw is fixed with a pressure cap 36 at one end near the end of the through-chamber seal 2. Each pressure cap 36 is inserted with a lever at its circumferential edge. By setting the lever and the pressure cap 36, it is easier and tighter to connect the through-chamber seal 2 and the fixing baffle frame 3, thereby improving the sealing effect.

[0025] Reference Figure 7 A counter nut 18 is screwed onto the side of the self-locking screw away from the pressure cap 36, and a sealing ring is fixed on the side of the fixed baffle frame 3 near the edge of the round hole on the side of the through-chamber seal 2. By setting the counter nut 18 and the sealing ring, the tightness of the end of the through-chamber seal 2 and the anti-fall-off effect can be increased.

[0026] Reference Figure 5 The outer circumference of the conical abutment tube 4 is connected to a feeding tube 5 near the top, and a cap is screwed to the top of the feeding tube 5; the feeding tube 5 makes it easier to add impact blocks into the surge simulation mechanism 10.

[0027] Reference Figure 7An observation window 6 is opened on the side of the arc-shaped tube, and an explosion-proof glass is snapped into the observation window 6; and a horizontally arranged stirring motor 17 is fixed on the side of the supporting frame 1. The top of the output shaft of the stirring motor 17 is fixed with a transmission rod 31 that extends into the arc-shaped tube through a coupling. The end of the transmission rod 31 is fixed with stirring blades; by setting the stirring blades, the mixed materials inside can be more uniform, and small pieces of material are avoided from colliding during impact.

[0028] Reference Figure 4 A fixed saddle 16 is fixed to the side of the bearing fixing frame 1, and the outer wall of the large-diameter cylindrical barrel 15 is clamped onto the fixed saddle 16; a transverse fixing plate 12 is also fixed to the side of the bearing fixing frame 1, and a clamp that matches the diameter of the piston tube 13 is fixed to the surface of the transverse fixing plate 12; by setting the transverse fixing plate 12, the impact resistance level of the impact bend 11 is improved, and the overall stability of the device is improved.

[0029] Reference Figure 2 and Figure 6 On the upper surface of the support frame 1, near the rear edge, are fixed vertical L-shaped fixing plates 7 and slide rail fixing blocks 30. On the side of the slide rail fixing block 30 away from the through-chamber seal 2, a downward-facing grooved slide rail 29 is fixed. A push rod 26 is slidably connected within the groove of the grooved slide rail 29. A connecting block is fixed to the side of the push rod 26 near its top. An arc-shaped push rod 20 is fixed to the other end of the connecting block. The top of the arc-shaped push rod 20 is fixed to the moving piston push rod 19. The arc-shaped push rod 20, the grooved slide rail 29, and the impact bend 11 are concentric. A transmission stop block 22 is fixed to the side of the push rod 26 near its top. The side of the slide rail 29 has a strip-shaped hole for the transmission stop 22 to slide; the outer arc side of the push rod 26 has self-locking teeth 27 evenly distributed, and the back of the grooved slide rail 29 has a rectangular hole near the bottom. A backstop lock rod 24 is hinged in the rectangular hole. An extension plate 25 is fixed to the bottom of the grooved slide rail 29, and a clamping spring is fixed between the extension plate 25 and the bottom of the backstop lock rod 24. With the setting of the backstop lock rod 24 and the push rod 26, when it is necessary to impact the moving piston push rod 19 during use, it is only necessary to push it hard along the movement trajectory of the push rod 26, and then the force is amplified and transmitted through the internal hydraulic oil.

[0030] Reference Figure 2A bearing seat is fixed to the back of the L-shaped fixed plate 7 near the center, and a horizontally arranged long shaft is rotatably connected inside the bearing seat. An impact plate 23 and a driven gear 9 are fixed to the ends of the long shaft respectively. A reduction motor is also fixed to the side of the L-shaped fixed plate 7 below the bearing seat. A half gear 28 is fixed to the top of the output shaft of the reduction motor, and the half gear 28 meshes with the driven gear 9. An electric push rod 8 extending downwards is fixed to the top of the L-shaped fixed plate 7, and a spring fixing block is fixed to the end of the extension rod of the electric push rod 8. A tension spring 21 is fixed between the lower surface of the spring fixing block and the end of the impact plate 23. With the setting of the tension spring 21 and the drive of the half gear 28, when it is necessary to impact the transmission stop 22, it is only necessary to control the half gear 28 to rotate clockwise continuously.

[0031] Reference Figure 4 A spring fixing plate 34 is fixed to the inner wall of the large-diameter cylindrical barrel 15 near the top, and a return spring 33 is fixed between the lower surface of the spring fixing plate 34 and the piston top plate 32; after the locking of the anti-reverse locking rod 24 is removed, the push rod 26 can slowly return to its original position.

[0032] A method for testing submarine umbilical cables penetrating a cabin includes the following steps: Step 1: First, thread the cable through the chamber seal 2 to be tested and stuff the filler into the sleeve to form the installed shape. The other end of the cable extends into the position of the arc-shaped pipe. Then, add brine and wood blocks from the feed pipe 5, leaving a little space so that the brine inside can generate impact. Step 2: A horizontally mounted stirring motor 17 is fixed to the side of the support frame 1. The top of the output shaft of the stirring motor 17 is fixed with a transmission rod 31 that extends into the arc-shaped tube via a coupling. A stirring blade is fixed to the end of the transmission rod 31. The servo motor 17 is started to stir the wooden blocks and other objects added inside the arc-shaped tube, so that the substances in the simulated seawater are evenly distributed. The anti-reverse locking rod 24 and the push rod 26 are set so that when it is necessary to impact the moving piston rod 19 during use, it can be pushed hard along the movement trajectory of the push rod 26, and then the force is amplified and transmitted through the internal hydraulic oil. Step 3: Restart the reduction motor to drive the half gear 28 to rotate. After the driven gear 9 rotates to a certain angle, it will drive the impact plate 23 to swing downwards to a certain extent. Then, it will suddenly lose the drive of the half gear 28 and swing upwards quickly to impact the transmission stop 22. Subsequently, through the push of the moving piston rod 19, the piston top plate 32, which is slidably connected in the large diameter cylinder 15, will move upwards quickly and push the brine mixture in the arc tube towards the perforated seal 2, thus forming a high-pressure test.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A submarine umbilical cable penetration testing device, comprising a support frame (1), the support frame (1) comprising two mounting planes of different heights, a baffle seat (35) fixed on the higher mounting plane of the support frame (1), and a sealing element fixing mechanism adapted to the penetration sealing element (2) provided on the baffle seat (35), characterized in that, The sealing element fixing mechanism includes a fixing baffle frame (3), with a circular hole in the middle of the fixing baffle frame (3). A conical abutment tube (4) is welded to the side of the fixing baffle frame (3) away from the through-chamber seal (2). A surge simulation mechanism (10) is connected to the side of the conical abutment tube (4) away from the fixing baffle frame (3). The surge simulation mechanism (10) includes an arc-shaped tube connected to the end of the conical abutment tube (4). A large-diameter cylindrical barrel (15) with its opening facing upward is fixed to the bottom end of the arc-shaped tube. The bottom of the large-diameter cylindrical barrel (15) is connected to a pressure-resistant connector with an upward bend. The top of the pressure-resistant connecting pipe (14) is connected to a vertical piston pipe (13), the top of the piston pipe (13) is connected to an impact bend pipe (11), and the top of the impact bend pipe (11) is slidably connected to a moving piston rod (19); and a piston top plate (32) is slidably connected inside the large-diameter cylindrical barrel (15), the upper and lower sides of the piston top plate (32) are respectively filled with brine and hydraulic oil, and the upper and lower sides of the piston top plate (32) are not connected, and the brine contains wood blocks; the upper surface of the bearing fixing frame (1) near the back edge is respectively A vertical L-shaped fixing plate (7) and a slide rail fixing block (30) are fixed. A downward-facing grooved slide rail (29) is fixed on the side of the slide rail fixing block (30) away from the through-chamber seal (2). A push rod (26) is slidably connected in the groove of the grooved slide rail (29). A connecting block is fixed on the side of the push rod (26) near the top. An arc-shaped push rod (20) is fixed at the other end of the connecting block. The top of the arc-shaped push rod (20) is fixed on the moving piston push rod (19). The arc-shaped push rod (20), the grooved slide rail (29) and the impact bend are also fixed together. (11) Concentric, and a transmission stop (22) is fixed on the side of the push rod (26) near the top. A strip hole for the transmission stop (22) to slide is opened on the side of the grooved slide rail (29). Self-locking teeth (27) are evenly distributed on the outer arc side of the push rod (26). A rectangular hole is opened on the back of the grooved slide rail (29) near the bottom. A backstop lock rod (24) is hinged in the rectangular hole. An extension plate (25) is fixed at the bottom of the grooved slide rail (29). A clamping spring is fixed between the extension plate (25) and the bottom of the backstop lock rod (24).

2. The submarine umbilical cable penetration testing device according to claim 1, characterized in that, The sealing fixing mechanism also includes fixing holes that are centrally symmetrically distributed near the center of the fixing baffle frame (3). Each fixing hole is fixed with an internal threaded tube (37), and each internal threaded tube (37) is screwed with a self-locking screw. Each end of the self-locking screw near the through-chamber sealing element (2) is fixed with a pressure cap (36), and each pressure cap (36) is inserted with a lever at the circumferential edge of the circumference edge.

3. The submarine umbilical cable penetration testing device according to claim 2, characterized in that, The self-locking screw is screwed with a top nut (18) on the side away from the pressure cap (36), and the fixed baffle frame (3) is fixed with a sealing ring on the side of the through-chamber seal (2) near the edge of the round hole.

4. The submarine umbilical cable penetration testing device according to claim 1, characterized in that, The tapered abutment tube (4) has a feeding tube (5) inserted near the top of its circumferential outer wall, and a cap is screwed to the top of the feeding tube (5).

5. The submarine umbilical cable penetration testing device according to claim 4, characterized in that, The side of the arc-shaped tube has an observation window (6), and an explosion-proof glass is snapped into the observation window (6); and a horizontally arranged stirring motor (17) is fixed on the side of the support frame (1). The top of the output shaft of the stirring motor (17) is fixed with a transmission rod (31) that extends into the arc-shaped tube through a coupling. The end of the transmission rod (31) is fixed with stirring blades.

6. The submarine umbilical cable penetration testing device according to claim 1, characterized in that, The side of the bearing fixing frame (1) is fixed with a fixing saddle (16), and the outer wall of the large diameter cylinder (15) is clamped on the fixing saddle (16); the side of the bearing fixing frame (1) is also fixed with a transverse fixing plate (12), and the surface of the transverse fixing plate (12) is fixed with a clamp that matches the diameter of the piston tube (13).

7. The submarine umbilical cable penetration testing device according to claim 6, characterized in that, The back of the L-shaped fixing plate (7) is fixed with a bearing seat near the middle, and a horizontally arranged long shaft is rotatably connected inside the bearing seat. The ends of the long shaft are respectively fixed with an impact plate (23) and a driven gear (9). The side of the L-shaped fixing plate (7) is also fixed with a reduction motor below the bearing seat. The top of the output shaft of the reduction motor is fixed with a half gear (28), and the half gear (28) meshes with the driven gear (9). The top of the L-shaped fixing plate (7) is fixed with an electric push rod (8) extending downwards, and the end of the extension rod of the electric push rod (8) is fixed with a spring fixing block. The lower surface of the spring fixing block is fixed with a tension spring (21) between the end of the impact plate (23).

8. The submarine umbilical cable penetration testing device according to claim 7, characterized in that, The inner wall of the large-diameter cylinder (15) is fixed with a spring fixing plate (34) near the top, and a return spring (33) is fixed between the lower surface of the spring fixing plate (34) and the piston top plate (32).

9. The method for testing submarine umbilical cables through a cabin using a submarine umbilical cable penetration testing device as described in any one of claims 1-8, comprising the following steps: Step 1: First, thread the cable through the chamber seal (2) to be tested, and stuff the filler into the sleeve to form the installed shape. The other end of the cable extends into the position of the arc tube. Then, add salt water and wood blocks from the feed pipe (5) and leave a little space so that the salt water inside can generate impact. Step 2: Start the servo motor (17) to stir the wooden blocks added inside the arc tube, so that the substances in the simulated seawater are evenly distributed. Step 3: Restart the geared motor to drive the half gear (28) to rotate. When the driven gear (9) rotates to a certain angle, it will drive the impact plate (23) to swing downwards to a certain extent. Then, it will suddenly lose the drive of the half gear (28) and swing upwards quickly to impact the transmission stop (22). After being pushed by the moving piston rod (19), the piston top plate (32) slidingly connected in the large diameter cylinder (15) will move upwards quickly and push the brine mixture in the arc tube to rush towards the chamber seal (2), thus forming a high-pressure test.

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