A dry environment creating device for a curved seabed column

Abstract

The present application relates to the technical field of marine equipment maintenance, and particularly relates to a dry environment creating device suitable for a curved seabed columnar object, which comprises a left half cabin and a right half cabin which are symmetrically arranged and have the same structure, the left half cabin and the right half cabin are hingedly connected through a rotating shaft at the top, the top of the left half cabin and the right half cabin is provided with an opening and closing system, and both ends of the left half cabin and the right half cabin are provided with semicircular channels; the two ends of the left half cabin and the two ends of the right half cabin close to the end portions are respectively provided with flexible sections; the top of the left half cabin or the right half cabin is provided with a gas permeable through hole, and the bottom of the left half cabin or the right half cabin is provided with a water pumping system. The present application has the beneficial effect that the present application greatly reduces the repair difficulty of the seabed pipeline and the seabed cable by creating a dry environment; the flexible sections are arranged so that the equipment can adapt to the situation that the front and rear end faces of the operation cabin are not parallel, thereby ensuring that the operation cabin can clamp the curved seabed columnar object.

Description

Technical Field

[0001] This invention relates to the field of marine equipment maintenance technology, and in particular to a dry environment creation device suitable for curved seabed columnar objects. Background Technology

[0002] Submarine pipelines and cables play a vital role in marine engineering, undertaking demanding tasks such as transporting oil and electricity, and are indispensable components of offshore oil and gas development and transoceanic communications. However, located in the harsh environment of the seabed, these pipelines and cables are highly susceptible to deformation, damage, and breakage due to natural factors such as waves, currents, and temperature loads, as well as non-natural factors such as ship anchoring and fish feeding, which can lead to accidents. Therefore, regular inspection and repair are necessary.

[0003] However, due to their location in the marine environment, the repair costs of submarine pipelines and cables are extremely high. There are two commonly used repair methods in the existing technology: (1) On-water repair: The repair of submarine cables first requires the use of signals emitted from both ends of the optical cable to determine the approximate location of the damage, then a robot is dispatched to accurately locate and cut the section of optical cable, and finally a spare optical cable is connected. However, the connection process will be completed on the water surface. The optical cable will be lifted to the water surface by a tow ship, and then connected and repaired by engineers before being placed back into the seabed. Since the two separate sections need to be lifted from the seabed to the surface, the two break points need to be towed to two separate ships, and a long spare cable is used, which is time-consuming, labor-intensive, and consumes a lot of money. If the damaged location of the submarine pipeline / cable is near the shipping channel, the local maritime authorities will not allow this method of repair. (2) Underwater repair: This repair method often requires the assistance of divers. However, divers have low efficiency, high operational risks, and cannot guarantee the quality of repairs when working underwater. Affected by tides, the working window for divers to carry out underwater repairs is limited, which will directly affect the repair construction period and thus increase the repair costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dry environment creation device suitable for deformable seabed columnar objects. By creating a dry environment, the repair difficulty of seabed pipelines and cables is greatly reduced, and it can adapt to the situation where the front and rear end faces of the working chamber are not parallel, thereby ensuring that the working chamber can clamp the bent seabed columnar object.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A dry environment creation device suitable for curved seabed columnar objects includes a left half-chamber and a right half-chamber with identical structures and symmetrical arrangement. The left half-chamber and the right half-chamber are hinged by a top pivot. The top of the left half-chamber and the right half-chamber are provided with an opening and closing system for driving the left half-chamber and the right half-chamber to rotate around the pivot as an axis, so that the bottom of the left half-chamber and the bottom of the right half-chamber are closed to form a working chamber. Semi-circular channels are provided at both ends of the left half-chamber and the right half-chamber, so that the two ends of the working chamber formed after the bottom of the left half-chamber and the bottom of the right half-chamber are closed, forming circular through holes for embracing the seabed columnar object. Flexible sections are provided at both ends of the left half-chamber and both ends of the right half-chamber near their ends. The top of the left half-chamber or the right half-chamber is provided with a ventilated through hole for connecting to the sea surface through a pipe. The bottom of the left half-chamber or the right half-chamber is provided with a pumping system for pumping out seawater from the working chamber.

[0006] The beneficial effects of this invention are: by creating a dry environment, this invention greatly reduces the difficulty of repairing submarine pipelines and submarine cables; by setting up flexible segmentation equipment, it can adapt to situations where the front and rear ends of the work cabin are not parallel, thereby ensuring that the work cabin can clamp the bent submarine columnar object.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the flexible segment is made of rubber and contains a steel wire layer inside to increase the strength of the flexible segment.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the flexible section is made of rubber material containing a steel wire layer inside, which can ensure the strength of the flexible section while ensuring that the flexible section can be bent to a certain extent, thereby enabling the working cabin to clamp the bent seabed columnar object.

[0010] Furthermore, sealing strips are provided on the peripheral walls of the left and right half-cabins facing each other, as well as on the inner wall of the semi-circular channel.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the setting of the sealing strip can ensure that a sealed environment can be formed after the left half-chamber and the right half-chamber are closed, and avoid the situation of water seepage on the seabed due to poor sealing at the connection between the left half-chamber and the right half-chamber, as well as the connection between the left half-chamber and the right half-chamber and the seabed column.

[0012] Furthermore, the cross-section of the sealing strip is "D" shaped.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the cross-section of the sealing strip is "D" shaped, which can ensure the contact between the sealing strips and ensure the sealing performance after the sealing strips contact.

[0014] Furthermore, the working cabin extends from both ends of the rotating shaft, and downward-extending support legs are fixed at both ends of the rotating shaft. An arc-shaped support member for supporting the seabed column is fixed at the bottom end of the support leg.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the support legs can help support the seabed column, thereby reducing the force exerted by the work cabin on the seabed column.

[0016] Furthermore, the upper parts of both ends of the left half-cabin and the upper parts of both ends of the right half-cabin are provided with auxiliary support plates for supporting the seabed column, and the flexible section is located between the auxiliary support plates and the end of the working cabin.

[0017] The beneficial effects of adopting the above-mentioned further scheme are: the auxiliary support plate frame is used to provide auxiliary support on the seabed columnar object, so as to reduce the force of the working container on the seabed columnar object. At the same time, the working containers between the flexible sections are supported, so as to avoid the bending and deformation of the flexible sections when the working container is supported by only the two ends of the working container.

[0018] Furthermore, the opening and closing system includes a main telescopic hydraulic cylinder, and connecting frames are provided on the top of the left half-cabin and the top of the right half-cabin, with the two ends of the main telescopic hydraulic cylinder respectively connected to the two connecting frames.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the opening and closing of the left and right half-chambers can be controlled by the contraction and extension of the main telescopic cylinder, which makes the control convenient.

[0020] Furthermore, the top of both the left and right half-cabins is provided with limiting mechanisms to restrict the opening angle of the left and right half-cabins.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the setting of the limiting mechanism can limit the opening angle of the left and right half-cabins.

[0022] Furthermore, the limiting mechanism is a limiting arm, one end of which is fixedly mounted on the top of the left half-cabin and / or the right half-cabin. After the left half-cabin and the right half-cabin open to a certain angle, the other end of the limiting arm abuts against the bottom of the other half-cabin to prevent it from opening further.

[0023] Furthermore, the opening and closing system also includes a locking system for locking the bottom of the left half-cabin and the bottom of the right half-cabin after they are closed. The locking system includes a secondary telescopic cylinder installed at the bottom of the right half-cabin. The head of the telescopic rod of the secondary telescopic cylinder is fixedly provided with a lock head. The bottom of the left half-cabin is provided with a locking mechanism for locking or unlocking the lock head.

[0024] The beneficial effects of adopting the above-mentioned further solution are: by using the secondary telescopic cylinder to drive the lock head into the locking mechanism, the lock head is locked, thereby locking the left and right half-chambers after they are closed. At the same time, after the locking mechanism locks the lock head, the secondary telescopic cylinder retracts to a certain extent, which can further improve the sealing between the left and right half-chambers.

[0025] Furthermore, the locking mechanism includes a locking mechanism body, which has a lock hole for inserting the lock head. The outer wall of the lock head has a lock groove, and a limiting block is slidably disposed in the lock groove. The end of the limiting block away from the secondary telescopic cylinder is connected to the side wall of the lock groove by a first spring. The limiting block has a first guide slope facing the secondary telescopic cylinder. A locking tongue is connected to the locking mechanism body by a second spring. One end of the locking tongue extends into the lock hole, and the side of the locking tongue inserted into the lock hole facing the secondary telescopic cylinder is a second guide slope. The side of the locking tongue inserted into the lock hole away from the secondary telescopic cylinder is a vertical surface.

[0026] The beneficial effects of adopting the above-mentioned further scheme are as follows: When the locking operation is performed, oil is supplied to the inlet of the secondary telescopic cylinder, and the lock head continues to move towards the lock hole. The second guide slope on the lock tongue slides along the length of the lock head and inserts between the lock head and the limiting block. At this time, the secondary telescopic cylinder stops supplying oil and limits the lock head by the vertical surface on the lock tongue and the groove wall of the lock groove to ensure the complete closure of the left and right halves of the lock. When the unlocking operation is performed, the secondary telescopic cylinder continues to extend, allowing the lock tongue to slide past the limiting block and be located to the left of the limiting block. Then the secondary telescopic cylinder begins to retract, and the limiting block is limited by the first spring until it is limited by the lock head. The secondary telescopic cylinder continues to retract, and the lock tongue passes through the first guide slope and the lock head in sequence until the secondary telescopic cylinder is completely disengaged from the locking mechanism.

[0027] Furthermore, the limiting block is a right-angled triangular prism, and the side of the limiting block facing the secondary telescopic cylinder is an inclined surface, which is the first guide inclined surface. The side of the limiting block away from the secondary telescopic cylinder is a right-angled surface. The top of the groove wall of the locking groove away from the secondary telescopic cylinder is provided with a horizontal wall extending towards the secondary telescopic cylinder. The top of the limiting block is flush with the top of the horizontal wall. The end of the first spring away from the limiting block is located between the horizontal wall and the bottom of the locking groove.

[0028] The beneficial effects of adopting the above-mentioned further solution are as follows: When the unlocking operation is performed, the secondary telescopic cylinder extends, causing the latch to slide past the limit block and be located on the left side of the limit block; then the secondary telescopic cylinder begins to retract. Since the limit block is slidably located in the lock groove, during the retraction of the secondary telescopic cylinder, the limit block first moves away from the secondary telescopic cylinder under the force of the latch until it abuts against the transverse wall. Then the secondary telescopic cylinder continues to retract, the latch moves along the first guide slope, and the second spring retracts until it moves to the top of the limit block. Since the top of the limit block is level with the top of the transverse wall, as the latch moves to the outer wall of the transverse wall, the latch gradually moves to disengage from the lock head as the secondary telescopic cylinder continues to retract, and the lock head disengages from the lock hole.

[0029] Furthermore, a third guide slope is provided on the side wall of the end of the lock head away from the secondary telescopic cylinder.

[0030] The beneficial effect of adopting the above-mentioned further solution is that the setting of the third guide slope can prevent the bolt from obstructing the lock head during the process of inserting the lock head into the key hole.

[0031] Furthermore, the pumping system includes a high-flow-rate water pump and a low-flow-rate water pump. The high-flow-rate water pump is connected to the bottom of the left half-compartment or the bottom of the right half-compartment via a pipe. A water collection tank is provided at the bottom of the left half-compartment or the bottom of the right half-compartment. The low-flow-rate water pump is connected to the bottom of the water collection tank via a pipe.

[0032] The beneficial effects of adopting the above-mentioned further scheme are: the high-flow water pump is used to quickly pump out the water in the cabin, the low-flow water pump is used to pump out the remaining water in the cabin, and at the same time, in order to prevent seawater leakage caused by poor sealing of the working cabin, the low-flow water pump is a water pump that can run dry. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the left half of the compartment in this invention;

[0035] Figure 3 This is a side view of the work cabin in this invention;

[0036] Figure 4 This is a schematic diagram of the locking system in this invention;

[0037] Figure 5 This is a schematic diagram illustrating the unlocking of the locking system in this invention;

[0038] Figure 6 This is a schematic diagram of the installation of the pumping system and the vent holes of the present invention;

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1-1. Working compartment; 1-1-1. Left half compartment; 1-1-2. Right half compartment; 1-2. Flexible section; 1-3. Rotating shaft; 1-4. Support leg; 1-5. Sealing strip; 1-5-1. Longitudinal sealing strip; 1-5-2. End face sealing strip; 1-5-3. Annular sealing strip; 1-6. Auxiliary support plate frame; 1-7. Limiting mechanism; 2-1. Main telescopic cylinder; 2-2. Secondary telescopic cylinder; 2-2-1. Lock groove; 2-2-2. Lock head; 2-2-3. Limiting mechanism 1. Block; 2-2-4. First spring; 2-2-5. First guide ramp; 2-2-6. Third guide ramp; 2-3. Locking mechanism; 2-3-1. Locking mechanism body; 2-3-2. Locking tongue; 2-3-3. Second spring; 2-3-4. Locking hole; 2-3-5. Second guide ramp; 2-4. Connecting frame; 3. Pumping system; 3-1. High flow water pump; 3-2. Water collection tank; 3-3. Low flow water pump; 4. Seabed column; 5. Ventilation hole. Detailed Implementation

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0042] like Figure 1As shown, in one embodiment of the present invention, a left half-cabin 1-1-1 and a right half-cabin 1-1-2 with identical and symmetrical structures are included. The left half-cabin 1-1-1 and the right half-cabin 1-1-2 are hinged by a top pivot 1-3. The top of the left half-cabin 1-1-1 and the right half-cabin 1-1-2 is provided with an opening and closing system for driving the left half-cabin 1-1-1 and the right half-cabin 1-1-2 to rotate about the pivot 1-3 as an axis, thereby closing the bottom of the left half-cabin 1-1-1 and the bottom of the right half-cabin 1-1-2 to form a working cabin 1-1. Semicircular channels are provided at both ends of the left half-cabin 1-1-1 and the right half-cabin 1-1-2, so that the two ends of the working cabin 1-1 formed after the bottom of the left half-cabin 1-1-1 and the bottom of the right half-cabin 1-1-2 are closed, forming a holding mechanism. The work cabin 1-1 has a circular through-hole for the seabed column 4; flexible sections 1-2 are provided at both ends of the left half-cabin 1-1-1 and both ends of the right half-cabin 1-1-2 near the ends. The flexible sections 1-2 are made of rubber and contain a steel wire layer inside to increase the strength of the flexible sections 1-2. The use of rubber material with a steel wire layer inside the flexible sections 1-2 can ensure that the flexible sections 1-2 can be bent to a certain extent while ensuring the strength of the flexible sections 1-2, so that the work cabin 1-1 can clamp the bent seabed column 4; the top of the left half-cabin 1-1-1 or the right half-cabin 1-1-2 is provided with a ventilation hole 5 for connecting to the sea surface through a pipe, and the bottom of the left half-cabin 1-1-1 or the right half-cabin 1-1-2 is provided with a pumping system 3 for pumping out the seawater in the work cabin 1-1.

[0043] The top of both the left half-cabin 1-1-1 and the right half-cabin 1-1-2 are equipped with limiting mechanisms 1-7 to restrict the opening angle of the left half-cabin 1-1-1 and the right half-cabin 1-1-2. Specifically, the limiting mechanism 1-7 is a limiting arm, one end of which is fixedly mounted on the top of the left half-cabin 1-1-1 and / or the right half-cabin 1-1-2. After the left half-cabin 1-1-1 and the right half-cabin 1-1-2 open to a certain angle, the other end of the limiting arm abuts against the bottom of the other half-cabin, preventing further opening.

[0044] like Figure 1 , Figure 2As shown, in an embodiment of the present invention, sealing strips 1-5 are provided on the peripheral walls of the left half-cabin 1-1-1 and the right half-cabin 1-1-2 facing each other, as well as on the inner wall of the semi-circular channel. Specifically, the sealing strips 1-5 include longitudinal sealing strips 1-5-1 embedded at the upper and lower ends of the junction of the left half-cabin 1-1-1 and the right half-cabin 1-1-2, longitudinal end face sealing strips 1-5-2 embedded at the front and rear ends of the junction of the left half-cabin 1-1-1 and the half-cabin, and annular sealing strips 1-5-3 embedded at the junction of the left half-cabin 1-1-1, the right half-cabin 1-1-2 and the seabed column 4. The annular sealing strips 1-5-3 are wider than the end face sealing strips 1-5-2 to reduce the force exerted by the present invention on the seabed column 4.

[0045] In a further embodiment, the cross-section of the sealing strip 1-5 is "D" shaped. The "D" shaped cross-section of the sealing strip 1-5 ensures the contact between the sealing strips 1-5 and the sealing performance after the sealing strips 1-5 contact.

[0046] In an embodiment of the present invention, the two ends of the rotating shaft 1-3 extend out of the working cabin 1-1, and both ends of the rotating shaft 1-3 are fixed with downwardly extending support legs 1-4. The bottom end of the support legs 1-4 is fixed with an arc-shaped support member for supporting the seabed column 4. The support legs 1-4 can assist in supporting the seabed column 4, so as to reduce the force of the working cabin 1-1 on the seabed column 4.

[0047] like Figure 2 As shown, in a further embodiment of the present invention, the upper parts of both ends of the left half-cabin 1-1-1 and the upper parts of both ends of the right half-cabin 1-1-2 are provided with auxiliary support plates 1-6 for supporting the seabed column 4. The flexible section 1-2 is located between the auxiliary support plates 1-6 and the end of the working cabin 1-1. The auxiliary support plates 1-6 are used to assist in supporting the seabed column 4, so as to reduce the force of the working cabin 1-1 on the seabed column 4. At the same time, the working cabin 1-1 between the flexible sections 1-2 is supported, so as to avoid the flexible section 1-2 from bending and deforming when the entire working cabin 1-1 is supported by only the two ends of the working cabin 1-1.

[0048] like Figure 3 As shown, in an embodiment of the present invention, the opening and closing system includes a main telescopic cylinder 2-1. A connecting frame 2-4 is provided on the top of the left half-cabin 1-1-1 and the top of the right half-cabin 1-1-2. The two ends of the main telescopic cylinder 2-1 are respectively connected to the two connecting frames 2-4. The opening and closing of the left half-cabin 1-1-1 and the right half-cabin 1-1-2 are controlled by the contraction and extension of the main telescopic cylinder 2-1, which is convenient for control.

[0049] like Figure 3As shown, further, in a preferred embodiment of the present invention, the opening and closing system further includes a locking system for locking the bottoms of the left half-cabin 1-1-1 and the right half-cabin 1-1-2 after the bottoms of the left half-cabin 1-1-1 and the right half-cabin 1-1-2 are closed. The locking system includes a secondary telescopic cylinder 2-2 installed at the bottom of the right half-cabin 1-1-2, and a lock head 2-2-2 is fixedly provided at the head of the telescopic rod of the secondary telescopic cylinder 2-2. The bottom of the left half-cabin 1-1-1 is provided with... The locking mechanism 2-3, used to lock or unlock the lock head 2-2-2, drives the lock head 2-2-2 into the locking mechanism 2-3 through the secondary telescopic cylinder 2-2, thereby locking the lock head 2-2-2 and locking the closed left half-compartment 1-1-1 and right half-compartment 1-1-2. At the same time, after the locking mechanism 2-3 locks the lock head 2-2-2, the secondary telescopic cylinder 2-2 retracts to a certain extent, which can further improve the sealing between the left half-compartment 1-1-1 and right half-compartment 1-1-2.

[0050] like Figure 4 As shown, specifically, the locking mechanism 2-3 includes a locking mechanism body 2-3-1. The locking mechanism body 2-3-1 has a lock hole 2-3-4 for the lock head 2-2-2 to be inserted into. The outer wall of the lock head 2-2-2 has a lock groove 2-2-1. A limiting block 2-2-3 is slidably disposed in the lock groove 2-2-1. The end of the limiting block 2-2-3 away from the secondary telescopic cylinder 2-2 is connected to the side wall of the lock groove 2-2-1 by a first spring 2-2-4. The limiting block 2-2-3 faces... The secondary telescopic cylinder 2-2 is provided with a first guide slope 2-2-5. The locking mechanism body 2-3-1 is connected to a locking tongue 2-3-2 by a second spring 2-3-3. One end of the locking tongue 2-3-2 extends into the lock hole 2-3-4, and the side of the locking tongue 2-3-2 inserted into the lock hole 2-3-4 facing the secondary telescopic cylinder 2-2 is the second guide slope 2-3-5. The side of the locking tongue 2-3-2 inserted into the lock hole 2-3-4 away from the secondary telescopic cylinder 2-2 is a vertical surface.

[0051] During the locking operation, oil is supplied to the inlet of the secondary telescopic cylinder 2-2, and the lock head 2-2-2 continuously moves towards the lock hole 2-3-4. The second guide slope 2-3-5 on the lock tongue 2-3-2 slides along the length of the lock head 2-2-2 and inserts between the lock head 2-2-2 and the limiting block 2-2-3. At this time, the secondary telescopic cylinder 2-2 stops supplying oil, and the vertical surface on the lock tongue 2-3-2 and the groove wall of the lock groove 2-2-1 limit the movement, ensuring the complete closure of the left half-cabin 1-1-1 and the right half-cabin 1-1-2. Figure 5As shown, when the unlocking operation is performed, the secondary telescopic cylinder 2-2 continues to extend, causing the locking tongue 2-3-2 to slide past the limiting block 2-2-3 and be located to the left of the limiting block 2-2-3; then the secondary telescopic cylinder 2-2 begins to retract, and the limiting block 2-2-3 is restricted by the first spring 2-2-4 until it is limited by the locking head 2-2-2. The secondary telescopic cylinder 2-2 continues to retract, and the locking tongue 2-3-2 passes through the first guide slope 2-2-5 and the locking head 2-2-2 in sequence until the secondary telescopic cylinder 2-2 is completely disengaged from the locking mechanism 2-3.

[0052] In an embodiment of the present invention, the limiting block 2-2-3 is a right-angled triangular prism, and the side of the limiting block 2-2-3 facing the secondary telescopic cylinder 2-2 is an inclined surface, which is the first guide inclined surface 2-2-5. The side of the limiting block 2-2-3 away from the secondary telescopic cylinder 2-2 is a right-angled surface. The top of the groove wall of the locking groove 2-2-1 away from the secondary telescopic cylinder 2-2 is provided with a transverse wall extending towards the secondary telescopic cylinder 2-2. The top of the limiting block 2-2-3 is flush with the top of the transverse wall. One end of the first spring 2-2-4 away from the limiting block 2-2-3 is located between the transverse wall and the bottom of the groove of the locking groove 2-2-1. When the unlocking operation is performed, the secondary telescopic cylinder 2-2 extends, causing the locking tongue 2-3-2 to slide past the limiting block 2-2-3 and be located on the left side of the limiting block 2-2-3. As the secondary telescopic cylinder 2-2 begins to retract, the limiting block 2-2-3, which is slidably positioned within the lock groove 2-2-1, moves away from the secondary telescopic cylinder 2-2 during its retraction. Under the force of the locking tongue 2-3-2, the limiting block 2-2-3 moves away from the locking cylinder 2-2 until it abuts the transverse wall. Then, the secondary telescopic cylinder 2-2 continues to retract, and the locking tongue 2-3-2 moves along the first guide slope 2-2-5. The second spring 2-3-3 retracts until it reaches the top of the limiting block 2-2-3. Since the top of the limiting block 2-2-3 is level with the top of the transverse wall, as the locking tongue 2-3-2 moves to the outer wall of the transverse wall, and the secondary telescopic cylinder 2-2 continues to retract, the locking tongue 2-3-2 gradually moves until it disengages from the lock head 2-2-2, which then disengages from the lock hole 2-3-4.

[0053] A third guide slope 2-2-6 is provided on the side wall of the end of the lock head 2-2-2 away from the secondary telescopic cylinder 2-2. The setting of the third guide slope 2-2-6 ensures that the lock tongue 2-3-2 will not obstruct the lock head 2-2-2 during the process of the lock head 2-2-2 being inserted into the lock hole 2-3-4.

[0054] like Figure 6As shown, in an embodiment of the present invention, the pumping system 3 includes a high-flow water pump 3-1 located outside the working chamber 1-1 and connected to the working chamber 1-1 via a rubber water pipe, a water collection tank 3-2 located on the lower surface of the working chamber 1-1 and distributed at the four corners, and a low-flow water pump 3-3 located outside the working chamber 1-1 and connected to the water collection tank 3-2 via a rubber water pipe. Among them, the high-flow water pump 3-1 is a submersible sand-discharging pump, which can adapt to sea areas with a sand content of 3% and is used to pump the water level in the cabin to 200mm; the low-flow water pump 3-3 is a pneumatic diaphragm pump with a watertight seal, which can run dry when there is no water in the inlet pipe and is used to pump the water level in the cabin. At the same time, it can ensure that when seawater leaks from the working cabin 1-1 due to poor sealing, the low-flow water pump 3-3 can continue to discharge the leaked seawater out of the working cabin 1-1; the water collection tank 3-2 is located at the bottom of the working cabin 1-1 and is used to collect a small amount of seawater in the working cabin 1-1 in one place for easy suction; the vent hole 5 is connected to the sea surface through a rubber water pipe and is used to allow atmospheric energy to enter the working cabin 1-1 in time when the water level in the working cabin 1-1 drops, so as to avoid the formation of negative pressure inside the working cabin 1-1.

[0055] The present invention provides a method for creating a dry working environment as follows:

[0056] (1) Blow away the sand around the submarine oil pipeline, submarine cable and other submarine column 4 to create an environment suitable for the closure of the work cabin 1-1.

[0057] (2) The invention is transported to the construction sea area. The main telescopic cylinder 2-1 is fully retracted and the secondary telescopic cylinder 2-2 is fully retracted. At this time, the work cabin 1-1 is opened and the invention is hoisted down to the seabed.

[0058] (3) Place the present invention on the seabed column 4, and fully extend the main telescopic cylinder 2-1. After the working chamber 1-1 is basically closed, the secondary telescopic cylinder 2-2 extends until the locking operation is completed.

[0059] (4) The high-flow water pump 3-1 starts working and lowers the water level to 200mm inside the working chamber 1-1, while the low-flow water pump 3-3 continues to work.

[0060] (5) Carry out repair work, and continue to operate the small flow water pump 3-3;

[0061] (6) Once the repair work is completed, the small flow water pump 3-3 stops operating, the closed system is used for unlocking, and the main telescopic cylinder 2-1 is fully retracted to allow the working chamber 1-1 to fully open.

[0062] (7) Lift the present invention.

[0063] This invention greatly reduces the difficulty of repairing submarine pipelines and submarine cables by creating a dry environment; by setting up flexible sections 1-2, the equipment can adapt to situations where the front and rear ends of the work cabin 1-1 are not parallel, thereby ensuring that the work cabin 1-1 can clamp the bent submarine column 4.

[0064] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," "circumferential," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dry environment creation device suitable for curved seabed columnar objects, characterized in that, It includes a left half-compartment (1-1-1) and a right half-compartment (1-1-2) with identical and symmetrical structures. The left half-compartment (1-1-1) and the right half-compartment (1-1-2) are hinged together by a top pivot (1-3). The top of the left half-compartment (1-1-1) and the right half-compartment (1-1-2) is provided for driving the left half-compartment (1-1-1) and the right half-compartment (1-1-2) to rotate about the pivot (1-3) as an axis, so that the bottom of the left half-compartment (1-1-1) and the... The bottom of the right half-cabin (1-1-2) is closed to form the opening and closing system of the working cabin (1-1). Both ends of the left half-cabin (1-1-1) and the right half-cabin (1-1-2) are provided with semi-circular channels, so that after the bottom of the left half-cabin (1-1-1) and the bottom of the right half-cabin (1-1-2) are closed, circular through holes are formed at both ends of the working cabin (1-1) to accommodate the seabed columnar object (4). Near the ends of the left half-cabin (1-1-1) and the right half-cabin (1-1-2)... Both ends of the left half-cabin (1-1-1) are provided with flexible sections (1-2) near their ends; the top of the left half-cabin (1-1-1) or the right half-cabin (1-1-2) is provided with a ventilated opening (5) for connecting to the sea surface via a pipe; the bottom of the left half-cabin (1-1-1) or the right half-cabin (1-1-2) is provided with a pumping system (3) for pumping seawater out of the working cabin (1-1); the opening and closing system also includes the bottom of the left half-cabin (1-1-1) and the right half-cabin (1-1-2) 2) After the bottom is closed, a locking system is provided to lock the bottom of the left half-cabin (1-1-1) and the bottom of the right half-cabin (1-1-2). The locking system includes a secondary telescopic cylinder (2-2) installed at the bottom of the right half-cabin (1-1-2). The head of the telescopic rod of the secondary telescopic cylinder (2-2) is fixedly provided with a lock head (2-2-2). The bottom of the left half-cabin (1-1-1) is provided with a locking mechanism (2-3) for locking or unlocking the lock head (2-2-2).The locking mechanism (2-3) includes a locking mechanism body (2-3-1), on which a lock hole (2-3-4) is provided for the insertion of the lock head (2-2-2). A lock groove (2-2-1) is provided on the outer wall of the lock head (2-2-2). A limiting block (2-2-3) is slidably disposed within the lock groove (2-2-1). The end of the limiting block (2-2-3) away from the secondary telescopic cylinder (2-2) is connected to the side wall of the lock groove (2-2-1) by a first spring (2-2-4). 4) For connection, the limiting block (2-2-3) has a first guide slope (2-2-5) facing the secondary telescopic cylinder (2-2). The locking mechanism body (2-3-1) is connected to a locking tongue (2-3-2) via a second spring (2-3-3). One end of the locking tongue (2-3-2) extends into the lock hole (2-3-4), and the side of the locking tongue (2-3-2) inserted into the lock hole (2-3-4) facing the secondary telescopic cylinder (2-2) forms the second guide slope (2-3-5).

2. The dry environment creation device suitable for curved seabed columnar objects according to claim 1, characterized in that, Sealing strips (1-5) are provided on the peripheral walls of the left half-cabin (1-1-1) and the right half-cabin (1-1-2) facing each other, as well as on the inner wall of the semi-circular passage.

3. The dry environment creation device suitable for curved seabed columnar objects according to claim 1, characterized in that, The two ends of the rotating shaft (1-3) extend out of the working cabin (1-1), and both ends of the rotating shaft (1-3) are fixedly provided with downwardly extending support legs (1-4). The bottom end of the support legs (1-4) is fixedly provided with an arc-shaped support for supporting on the seabed column (4).

4. A dry environment creation device suitable for curved seabed columnar objects according to claim 1, characterized in that, The upper parts of both ends of the left half-cabin (1-1-1) and the upper parts of both ends of the right half-cabin (1-1-2) are provided with auxiliary support plates (1-6) for supporting the seabed column (4). The flexible section (1-2) is located between the auxiliary support plates (1-6) and the end of the working cabin (1-1).

5. A dry environment creation device suitable for curved seabed columnar objects according to claim 1, characterized in that, The opening and closing system includes a main telescopic cylinder (2-1). The top of the left half-cabin (1-1-1) and the top of the right half-cabin (1-1-2) are each provided with a connecting frame (2-4). The two ends of the main telescopic cylinder (2-1) are respectively connected to the two connecting frames (2-4).

6. A dry environment creation device suitable for curved seabed columnar structures according to any one of claims 1 to 5, characterized in that, The top of the left half-cabin (1-1-1) and the top of the right half-cabin (1-1-2) are both provided with limiting mechanisms (1-7) for limiting the opening angle of the left half-cabin (1-1-1) and the right half-cabin (1-1-2).

7. A dry environment creation device suitable for curved seabed columnar objects according to claim 1, characterized in that, The lock head (2-2-2) has a third guide slope (2-2-6) on the side wall of the end away from the secondary telescopic cylinder (2-2).

8. A dry environment creation device suitable for curved seabed columnar structures according to any one of claims 1 to 5, characterized in that, The pumping system (3) includes a high-flow water pump (3-1) and a low-flow water pump (3-3). The high-flow water pump (3-1) is connected to the bottom of the left half-chamber (1-1-1) or the bottom of the right half-chamber (1-1-2) through a pipe. A water collection tank (3-2) is provided at the bottom of the left half-chamber (1-1-1) or the bottom of the right half-chamber (1-1-2). The low-flow water pump (3-3) is connected to the bottom of the water collection tank (3-2) through a pipe.

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