CN116834934A - Dry-type environment construction device suitable for bending seabed columns - Google Patents

Abstract

The invention relates to the technical field of marine equipment maintenance, in particular to a dry-type environment building device suitable for bending a submarine column, which comprises a left half cabin and a right half cabin which are identical in structure and are symmetrically arranged, wherein the left half cabin and the right half cabin are hinged through a rotating shaft at the top, an opening and closing system is arranged at the top of the left half cabin and the right half cabin, and semicircular channels are arranged at two ends of the left half cabin and the right half cabin; the two ends of the left half cabin close to the end parts are respectively provided with a flexible section; the top of the left half cabin or the right half cabin is provided with an air ventilation through hole, and the bottom of the left half cabin or the right half cabin is provided with a water pumping system. The beneficial effects of the invention are as follows: the invention greatly reduces the repair difficulty of submarine pipelines and submarine cables by creating a dry environment; the flexible section enables the equipment to adapt to the condition that the front end face and the rear end face of the operation cabin are not parallel, so that the operation cabin is ensured to clamp the bent seabed column.

Description

Dry-type environment construction device suitable for bending seabed columns

Technical Field

The invention relates to the technical field of marine equipment maintenance, in particular to a dry environment building device suitable for bending a submarine column.

Background

Columns such as submarine pipelines and submarine cables play an important role in ocean engineering, carry difficult tasks such as petroleum, power and the like, and are an essential component for ocean oil and gas development and transoceanic communication. However, submarine pipelines, submarine cables and other places with severe environments are extremely easy to generate damages such as deformation, damage, fracture and the like due to natural factors such as wave ocean currents, temperature loads and the like or unnatural factors such as ship anchoring and fish biting and the like, so that accidents are caused. And therefore require periodic inspection and repair.

However, due to the marine environment at the ground, repair costs of submarine pipelines, submarine cables, etc. are extremely high. There are two common repair modes in the prior art: (1) water remediation: the repair of submarine cables firstly requires that the damaged approximate position is determined by transmitting signals through optical cables at two ends, then a robot is dispatched to accurately position and cut off the optical cable, and finally, the standby optical cable is connected. But the connection process is completed on the water surface, the optical cable is pulled to the water surface by the towing ship, and is connected and repaired by an engineer and then put into the sea bottom. Since the two separated sections need to be lifted from the sea floor to the sea surface, the two break points need to be towed to the two vessels separately and a long spare cable is used, which is time consuming, laborious and costly, as the damaged position of the submarine pipeline/cable is near the channel, nor is the local maritime department allowed to repair in this way. (2) underwater remediation: the repair method often needs the assistance of divers, but the divers have low underwater operation efficiency, high operation risk and uncontrollable repair quality, are affected by tides, have limited operation window period when the divers perform underwater repair, directly influence the repair construction period, and further cause the increase of repair cost.

Disclosure of Invention

The invention aims to solve the technical problem of providing a dry environment building device suitable for deformed submarine columns, which greatly reduces the repair difficulty of submarine pipelines and submarine cables by building a dry environment, can adapt to the condition that the front end face and the rear end face of an operation cabin are not parallel, and further ensures that the operation cabin can clamp the bent submarine columns.

The technical scheme for solving the technical problems is as follows: the utility model provides a dry-type environment construction device suitable for crooked seabed column, includes the left half cabin and the right half cabin that the structure is the same and symmetry sets up, left half cabin with the pivot in right half cabin is articulated through the top, left half cabin with the top in right half cabin is equipped with and is used for driving left half cabin with the right half cabin uses the pivot as the axis rotation thereby make the bottom in left half cabin with the bottom in right half cabin is closed and is formed the switching system of operation cabin, left half cabin with the both ends in right half cabin all are equipped with semicircular channel for the both ends in operation cabin that the bottom in left half cabin and the bottom in right half cabin formed after being closed form the circular through-hole that is used for embracing seabed column; the two ends of the left half cabin close to the end parts are respectively provided with a flexible section; the top of the left half cabin or the right half cabin is provided with an air-permeable through hole which is communicated to the upper part of the sea surface through a pipeline, and the bottom of the left half cabin or the right half cabin is provided with a pumping system which is used for pumping out the seawater in the operation cabin.

The beneficial effects of the invention are as follows: the invention greatly reduces the repair difficulty of submarine pipelines and submarine cables by creating a dry environment; the flexible section enables the equipment to adapt to the condition that the front end face and the rear end face of the operation cabin are not parallel, so that the operation cabin is ensured to clamp the bent seabed column.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the flexible section is made of rubber, and the inside of the flexible section is provided with a steel wire layer to increase the strength of the flexible section.

The beneficial effects of adopting the further scheme are as follows: the flexible section adopts the rubber material that inside contains the steel wire layer, can ensure that the flexible section can bend to a certain extent under the prerequisite of guaranteeing flexible section intensity to realize that the operation cabin can press from both sides the seabed column of tight bending.

Further, sealing strips are arranged on the peripheral walls of the left half cabin and the right half cabin facing each other and on the inner walls of the semicircular channels.

The beneficial effects of adopting the further scheme are as follows: the sealing strips can ensure that a sealed environment can be formed after the left half cabin and the right half cabin are closed, so that the situation that water seepage on the seabed is caused by the fact that sealing is not tight at the junction between the left half cabin and the right half cabin and the junction between the left half cabin, the right half cabin and the seabed column is avoided.

Further, the section of the sealing strip is in a D shape.

The beneficial effects of adopting the further scheme are as follows: the section of the sealing strip adopts a D shape, so that the abutting connection between the sealing strips can be ensured, and the sealing performance of the sealing strip after the abutting connection is ensured.

Further, the two ends of the rotating shaft extend out of the working cabin respectively, supporting legs extending downwards are fixed at the two ends of the rotating shaft, and arc-shaped supporting pieces used for being supported on the seabed columns are fixedly arranged at the bottom ends of the supporting legs.

The beneficial effects of adopting the further scheme are as follows: the support legs can be supported on the seabed columns in an auxiliary mode, and therefore acting force of the operation cabin on the seabed columns is reduced.

Further, the upper parts of the two ends in the left half cabin and the upper parts of the two ends in the right half cabin are respectively provided with an auxiliary supporting plate frame for supporting on the seabed column, and the flexible section is arranged between the auxiliary supporting plate frame and the end part of the operation cabin.

The beneficial effects of adopting the further scheme are as follows: the auxiliary support plate frame is used for being supported on the seabed column in an auxiliary mode so as to reduce acting force of the operation cabin on the seabed column, meanwhile, the operation cabin between the flexible sections is supported, and the situation that bending deformation occurs to the flexible sections when the whole operation cabin is supported by the two ends of the operation cabin is avoided.

Further, the opening and closing system comprises a main telescopic oil cylinder, the top of the left half cabin and the top of the right half cabin are respectively provided with a connecting frame, and two ends of the main telescopic oil cylinder are respectively connected with two connecting frames.

The beneficial effects of adopting the further scheme are as follows: the left half cabin and the right half cabin are controlled to be opened and closed by the contraction and the extension of the main telescopic oil cylinder, and the control is convenient.

Further, the top of the left half cabin and the top of the right half cabin are respectively provided with a limiting mechanism for limiting the opening angle of the left half cabin and the opening angle of the right half cabin.

The beneficial effects of adopting the further scheme are as follows: the setting of the limiting mechanism can limit the opening angle of the left half cabin and the right half cabin.

Further, the stop gear is the spacing arm, the one end of spacing arm is fixed to be established at the top of left half cabin and/or right half cabin, opens to certain angle back in left half cabin and right half cabin, the other end butt of spacing arm is in the bottom of another half cabin, avoids continuing to open.

Further, the opening and closing system further comprises a locking system for locking the bottom of the left half cabin and the bottom of the right half cabin after the bottom of the left half cabin and the bottom of the right half cabin are closed, the locking system comprises a secondary telescopic cylinder arranged at the bottom of the right half cabin, a lock head is fixedly arranged at the head of a telescopic rod of the secondary telescopic cylinder, and a locking mechanism for locking or unlocking the lock head is arranged at the bottom of the left half cabin.

The beneficial effects of adopting the further scheme are as follows: the locking mechanism is inserted into the locking head through the secondary telescopic oil cylinder, so that the locking of the locking head is realized, the left half cabin and the right half cabin after being closed are locked, and meanwhile, after the locking head is locked by the locking mechanism, the secondary telescopic oil cylinder is retracted to a certain extent, so that the tightness between the left half cabin and the right half cabin can be further improved.

Further, locking mechanism includes the locking mechanism main part, be equipped with in the locking mechanism main part and supply tapered end male lockhole, be equipped with the locked groove on the outer wall of tapered end, the slip is equipped with the stopper in the locked groove, the stopper is kept away from the one end of inferior flexible hydro-cylinder with connect through first spring between the lateral wall of locked groove, the stopper orientation inferior flexible hydro-cylinder is equipped with first direction inclined plane, be connected with the spring bolt through the second spring in the locking mechanism main part, the one end of spring bolt stretches into in the lockhole, just the spring bolt inserts one end in the lockhole orientation inferior flexible hydro-cylinder's side is the second direction inclined plane, the spring bolt inserts one end in the lockhole is kept away from inferior flexible hydro-cylinder's side is the vertical face.

The beneficial effects of adopting the further scheme are as follows: when the locking operation is carried out, the oil inlet of the secondary telescopic oil cylinder is filled with oil, the lock head continuously moves towards the lock hole, the second guide inclined plane on the lock tongue sequentially slides along the length direction of the lock head and then is inserted between the lock head and the limiting block, at the moment, the secondary telescopic oil cylinder stops oil supply, and the limiting is carried out through the vertical plane on the lock tongue and the groove wall of the lock groove so as to ensure the complete closing of the left half cabin and the right half cabin; when the unlocking operation is carried out, the secondary telescopic oil cylinder continues to extend, so that the lock tongue slides over the limiting block and is positioned at the left side of the limiting block; and then the secondary telescopic oil cylinder starts to shrink, the limiting block is limited by the lock head under the limitation of the first spring, the secondary telescopic oil cylinder continues to shrink, and the lock tongue sequentially passes through the first guide inclined plane and the lock head until the secondary telescopic oil cylinder is completely separated from the locking mechanism.

Further, the stopper is right angle triangular prism shape, just the one side of the secondary telescopic cylinder of stopper orientation is the inclined plane, is for first direction inclined plane, the one side that the stopper kept away from the secondary telescopic cylinder is the right angle face, the locked groove is kept away from the top of the cell wall of secondary telescopic cylinder is equipped with the cross wall that extends to the secondary telescopic cylinder, the top of stopper with the top of cross wall is leveled, first spring is kept away from the one end of stopper is established between the cross wall with the tank bottom of locked groove.

The beneficial effects of adopting the further scheme are as follows: when unlocking operation is carried out, the secondary telescopic oil cylinder stretches to enable the lock tongue to slide through the limiting block and be positioned on the left side of the limiting block; then the secondary telescopic cylinder starts to shrink, because the stopper slides and establishes in the locked groove, at the in-process of secondary telescopic cylinder shrink, the stopper is at first along with the direction removal of spring bolt to keeping away from the secondary telescopic cylinder until the butt transverse wall under the effort of spring bolt, then the secondary telescopic cylinder continues to shrink, the spring bolt is along first direction inclined plane removal, the second spring shrink, until remove to the top of stopper, because the top of stopper is leveled with the top of transverse wall, remove to the outer wall of transverse wall at the spring bolt, along with the continuous shrink of secondary telescopic cylinder, the spring bolt gradually removes to breaking away from the tapered end, the tapered end breaks away from in the lockhole.

Further, a third guide inclined plane is arranged on the side wall of one end, away from the secondary telescopic oil cylinder, of the lock head.

The beneficial effects of adopting the further scheme are as follows: the third guide inclined plane can prevent the lock from being blocked by the lock tongue in the process of inserting the lock into the lock hole.

Further, the pumping system comprises a high-flow water pump and a low-flow water pump, wherein the high-flow water pump is communicated with the bottom of the left half cabin or the bottom of the right half cabin through a pipeline, the bottom of the left half cabin or the bottom of the right half cabin is provided with a water collecting tank, and the low-flow water pump is communicated with the bottom of the water collecting tank through a pipeline.

The beneficial effects of adopting the further scheme are as follows: the high-flow water pump is used for rapidly pumping out water in the cabin, the low-flow water pump is used for evacuating partial water remained in the cabin, and meanwhile, in order to ensure seawater leakage of the operation cabin caused by poor sealing effect, the low-flow water pump is a water pump capable of idling.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the inner structure of the left half cabin in the present invention;

FIG. 3 is a side view of the working chamber of the present invention;

FIG. 4 is a schematic view of the locking system of the present invention;

FIG. 5 is a schematic diagram of the unlocking of the locking system of the present invention;

FIG. 6 is a schematic view of the installation of the pumping system and the ventilation through hole of the present invention;

in the drawings, the list of components represented by the various numbers is as follows:

1-1, an operation cabin; 1-1-1, left half cabin; 1-1-2, right half cabin; 1-2, a flexible segment; 1-3, a rotating shaft; 1-4, supporting legs; 1-5, sealing strips; 1-5-1, longitudinal sealing strips; 1-5-2, end face sealing strips; 1-5-3, annular sealing strips; 1-6, auxiliary supporting plate frames; 1-7, a limiting mechanism; 2-1, a main telescopic oil cylinder; 2-2, a secondary telescopic oil cylinder; 2-2-1, locking groove; 2-2-2, locking head; 2-2-3, limiting blocks; 2-2-4, a first spring; 2-2-5, a first guiding inclined plane; 2-2-6, a third guiding inclined plane; 2-3, a locking mechanism; 2-3-1, a locking mechanism main body; 2-3-2 parts of lock tongue; 2-3-3, a second spring; 2-3-4, and a lock hole; 2-3-5, a second guiding inclined plane; 2-4, connecting frames; 3. a water pumping system; 3-1, a large-flow water pump; 3-2, a water collecting tank; 3-3, a small-flow water pump; 4. a subsea column; 5. and a ventilation through hole.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

As shown in fig. 1, in one embodiment of the present invention, the device comprises a left half cabin 1-1-1 and a right half cabin 1-1-2 which are symmetrically arranged and have the same structure, wherein the left half cabin 1-1-1 and the right half cabin 1-1-2 are hinged through a rotating shaft 1-3 at the top, the top of the left half cabin 1-1 and the right half cabin 1-2 is provided with a circular channel for driving the left half cabin 1-1 and the right half cabin 1-1-2 to rotate by taking the rotating shaft 1-3 as an axis, so that the bottom of the left half cabin 1-1 and the bottom of the right half cabin 1-1-2 are closed to form an opening and closing system of an operation cabin 1-1, and both ends of the left half cabin 1-1 and the right half cabin 1-2 are provided with circular channels, so that the operation cabin 1-1 formed after the bottom of the left half cabin 1-1 and the bottom of the right half cabin 1-2 are closed is formed into a circular through hole for forming a seabed 4; the two ends of the left half cabin 1-1, which are close to the end parts, and the two ends of the right half cabin 1-1-2, which are close to the end parts, are respectively provided with a flexible section 1-2, the flexible section 1-2 is made of rubber materials, a steel wire layer is arranged in the flexible section 1-2 to increase the strength of the flexible section 1-2, and the flexible section 1-2 is made of rubber materials with the steel wire layer in the flexible section 1-2, so that the flexible section 1-2 can be bent to a certain extent on the premise of ensuring the strength of the flexible section 1-2, and the operation cabin 1-1 can clamp the bent seabed column 4; the top of the left half cabin 1-1 or the right half cabin 1-1-2 is provided with an air-permeable through hole 5 which is communicated to the upper part of the sea surface through a pipeline, and the bottom of the left half cabin 1-1 or the right half cabin 1-1-2 is provided with a pumping system 3 which is used for pumping out the seawater in the operation cabin 1-1.

The top of the left half cabin 1-1 and the top of the right half cabin 1-1-2 are respectively provided with a limiting mechanism 1-7 for limiting the opening angle of the left half cabin 1-1 and the opening angle of the right half cabin 1-1-2, and the setting of the limiting mechanism 1-7 can limit the opening angle of the left half cabin 1-1 and the opening angle of the right half cabin 1-1-2. Specifically, the limiting mechanism 1-7 is a limiting arm, one end of the limiting arm is fixedly arranged at the top of the left half cabin 1-1 and/or the right half cabin 1-1-2, and after the left half cabin 1-1-1 and the right half cabin 1-1-2 are opened to a certain angle, the other end of the limiting arm is abutted to the bottom of the other half cabin, so that the continuous opening is avoided.

As shown in fig. 1 and 2, in the embodiment of the present invention, sealing strips 1-5 are disposed on the peripheral walls of the left half cabin 1-1 and the right half cabin 1-1-2 facing each other and on the inner walls of the semicircular channels, specifically, the sealing strips 1-5 include longitudinal sealing strips 1-5-1 respectively embedded at the upper end and the lower end of the junction of the left half cabin 1-1 and the right half cabin 1-1-2, longitudinal end face sealing strips 1-5-2 respectively embedded at the front end and the rear end of the junction of the left half cabin 1-1-1 and the half cabin, and annular sealing strips 1-5-3 respectively embedded at the junctions of the left half cabin 1-1-1, the right half cabin 1-1-2 and the seabed column 4, wherein the annular sealing strips 1-5-3 are wider than the end face sealing strips 1-5-2 so as to reduce the acting force of the present invention on the seabed column 4.

In a further embodiment, the cross section of the sealing strips 1-5 is in a shape of a 'D', the abutting between the sealing strips 1-5 can be ensured, and the sealing performance of the sealing strips 1-5 after abutting is ensured.

In the embodiment of the invention, the two ends of the rotating shaft 1-3 extend out of the operation cabin 1-1 respectively, the two ends of the rotating shaft 1-3 are both fixedly provided with the supporting legs 1-4 extending downwards, the bottom ends of the supporting legs 1-4 are fixedly provided with arc-shaped supporting pieces used for supporting on the seabed column 4, and the supporting legs 1-4 can be arranged to assist in supporting on the seabed column 4 so as to reduce the acting force of the operation cabin 1-1 on the seabed column 4.

In a further embodiment of the present invention, as shown in fig. 2, the upper parts of the two ends in the left half cabin 1-1 and the upper parts of the two ends in the right half cabin 1-1-2 are respectively provided with an auxiliary supporting plate frame 1-6 for supporting on the seabed column 4, the flexible section 1-2 is arranged between the auxiliary supporting plate frame 1-6 and the end part of the operation cabin 1-1, and the auxiliary supporting plate frame 1-6 is used for supporting on the seabed column 4 in an auxiliary manner so as to reduce the acting force of the operation cabin 1-1 on the seabed column 4, and meanwhile, the operation cabin 1-1 between the flexible sections 1-2 is supported, so that the flexible section 1-2 is prevented from bending deformation when the whole operation cabin 1-1 is supported by the two ends of the operation cabin 1-1.

As shown in fig. 3, in the embodiment of the present invention, the opening and closing system includes a main telescopic cylinder 2-1, the top of the left half cabin 1-1 and the top of the right half cabin 1-1-2 are respectively provided with a connecting frame 2-4, two ends of the main telescopic cylinder 2-1 are respectively connected with two connecting frames 2-4, and the opening and closing of the left half cabin 1-1 and the right half cabin 1-1-2 are controlled by the contraction and the extension of the main telescopic cylinder 2-1, so that the control is convenient.

As shown in fig. 3, in a further preferred embodiment of the present invention, the opening and closing system further includes a locking system for locking the bottom of the left half cabin 1-1-1 and the bottom of the right half cabin 1-2 after the bottom of the left half cabin 1-1-1 and the bottom of the right half cabin 1-2 are closed, the locking system includes a secondary telescopic cylinder 2-2 installed at the bottom of the right half cabin 1-2, a locking head 2-2 is fixedly provided at the head of a telescopic rod of the secondary telescopic cylinder 2-2, a locking mechanism 2-3 for locking or releasing the locking head 2-2-2 is provided at the bottom of the left half cabin 1-1, and the locking mechanism 2-3 is driven by the secondary telescopic cylinder 2-2 to insert the locking head 2-2-2, so that the locking of the locking head 2-2-2-2 is realized, and simultaneously, after the locking mechanism 2-3 performs the locking of the left half cabin 1-1-1-2 and the right half cabin 1-2, the locking head can be further improved in a certain degree of tightness between the locking head and the left half cabin 1-2-2, and the locking head can be further improved.

As shown in fig. 4, specifically, the locking mechanism 2-3 includes a locking mechanism main body 2-3-1, a lock hole 2-3-4 into which the lock head 2-2 is inserted is provided on the locking mechanism main body 2-3-1, a lock slot 2-2-1 is provided on an outer wall of the lock head 2-2-2, a stopper 2-2-3 is slidably provided in the lock slot 2-2-1, one end of the stopper 2-2-3, which is far away from the secondary telescopic cylinder 2-2, is connected with a side wall of the lock slot 2-2-1 through a first spring 2-2-4, the stopper 2-2-3 is provided with a first guiding inclined plane 2-2-5 toward the secondary telescopic cylinder 2-2, a lock tongue 2-3-2 is connected in the locking mechanism main body 2-3-1 through a second spring 2-3-3, one end of the lock tongue 2-3-2 stretches into the lock hole 2-3-4, and the stopper 2-3-2-2 is inserted into the side surface of the secondary telescopic cylinder 2-3-4, which is far away from the first guiding inclined plane 2-5 of the secondary telescopic cylinder 2-3-2-2.

When locking operation is performed, the oil inlet of the secondary telescopic oil cylinder 2-2 is filled, the lock head 2-2 continuously moves towards the lock hole 2-3-4, the second guide inclined surface 2-3-5 on the lock tongue 2-3-2 sequentially slides along the length direction of the lock head 2-2 and then is inserted between the lock head 2-2-2 and the limiting block 2-2-3, at the moment, the secondary telescopic oil cylinder 2-2 stops oil supply, and limiting is performed through the vertical surface on the lock tongue 2-3-2 and the groove wall of the lock groove 2-2-1 so as to ensure complete closing of the left half cabin 1-1-1 and the right half cabin 1-1-2; as shown in FIG. 5, when the unlocking operation is performed, the secondary telescopic cylinder 2-2 continues to extend, so that the lock tongue 2-3-2 slides over the limiting block 2-2-3 and is positioned on the left side of the limiting block 2-2-3; then the secondary telescopic cylinder 2-2 starts to shrink, the limiting block 2-2-3 is limited by the lock head 2-2 under the limit of the first spring 2-2-4, the secondary telescopic cylinder 2-2 continues to shrink, and the lock tongue 2-3-2 sequentially passes through the first guide inclined plane 2-2-5 and the lock head 2-2 until the secondary telescopic cylinder 2-2 is completely separated from the locking mechanism 2-3.

In the embodiment of the invention, the limiting block 2-2-3 is in a right-angle triangular prism shape, one surface of the secondary telescopic cylinder 2-2, which faces the limiting block 2-2-3, is an inclined surface and is the first guide inclined surface 2-2-5, one surface of the limiting block 2-2-3, which is far away from the secondary telescopic cylinder 2-2, is a right-angle surface, the top of the groove wall of the locking groove 2-2-1, which is far 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 2-3 is leveled with the top of the transverse wall, one end of the first spring 2-2-4, which is far away from the limiting block 2-2-3, is arranged between the transverse wall and the groove bottom of the locking groove 2-2-1, and when unlocking operation is performed, the secondary telescopic cylinder 2-2 extends to enable the lock tongue 2-3-2 to slide over the limiting block 2-2-3, and is positioned at the left side of the limiting block 2-2-3; then the secondary telescopic cylinder 2-2 starts to shrink, as the limiting block 2-2-3 is slidably arranged in the lock groove 2-2-1, during the shrinkage process of the secondary telescopic cylinder 2-2, the limiting block 2-2-3 moves along with the bolt 2-3-2 in the direction away from the secondary telescopic cylinder 2-2 until abutting against the transverse wall under the acting force of the bolt 2-3-2, then the secondary telescopic cylinder 2-2 continues to shrink, the bolt 2-3-2 moves along the first guiding inclined plane 2-2-5, the second spring 2-3-3 shrinks until moving to the top of the limiting block 2-2-3, as the top of the limiting block 2-2-3 is leveled with the top of the transverse wall, the bolt 2-3-2 moves to the outer wall of the transverse wall, and as the secondary telescopic cylinder 2-2 continues to shrink, the bolt 2-3-2 gradually moves to be separated from the lock 2-2, and the lock 2-2-2 is separated from the lock hole 2-3-4.

The side wall of one end, far away from the secondary telescopic oil cylinder 2-2, of the lock head 2-2 is provided with a third guide inclined plane 2-2-6, and the third guide inclined plane 2-2-6 can prevent the lock head 2-2 from being blocked by the lock tongue 2-3-2 in the process that the lock head 2-2 is inserted into the lock hole 2-3-4.

As shown in fig. 6, in the embodiment of the present invention, the pumping system 3 includes a large flow water pump 3-1 located outside the working chamber 1-1 and connected to the working chamber 1-1 through a rubber water pipe, a water collecting tank 3-2 located at the lower surface of the working chamber 1-1 and distributed at four corners, and a small flow water pump 3-3 located outside the working chamber 1-1 and connected to the water collecting tank 3-2 through a rubber water pipe. The high-flow water pump 3-1 is a sand-discharging submersible pump, can adapt to the sea area with 3% of sand content and is used for pumping the water level in the cabin to a position of 200 mm; the small-flow water pump 3-3 is a pneumatic diaphragm pump which is subjected to watertight packaging, can idle under the condition that a water inlet pipe is free of water and is used for evacuating the water level in the cabin, and meanwhile, when the seawater in the operation cabin 1-1 leaks due to poor sealing effect, the small-flow water pump 3-3 can continuously discharge the leaked seawater out of the operation cabin 1-1; the water collecting tank 3-2 is positioned at the bottom of the operation cabin 1-1 and is used for collecting a small amount of seawater in the operation cabin 1-1 to one place so as to facilitate suction; the ventilation through holes 5 are connected to the sea surface through rubber water pipes, and are used for enabling the atmosphere to timely enter the operation cabin 1-1 through the ventilation through holes 5 when the water level in the operation cabin 1-1 is lowered, so that negative pressure is prevented from being formed in the operation cabin 1-1.

The invention provides a dry type operation environment method, which comprises the following steps:

(1) Blowing sand around the submarine column 4 such as submarine oil pipes and submarine cables to empty, and constructing an environment suitable for closing the operation cabin 1-1;

(2) The invention is transported to the construction sea, the main telescopic oil cylinder 2-1 is completely contracted, the secondary telescopic oil cylinder 2-2 is completely contracted, at the moment, the operation cabin 1-1 is opened, and the crane is lifted until the sea bottom;

(3) The invention is erected on the seabed column 4, the main telescopic oil cylinder 2-1 is fully extended, and after the operation cabin 1-1 is basically closed, the secondary telescopic oil cylinder 2-2 is extended until the locking operation is completed;

(4) The large-flow water pump 3-1 starts to operate, the water level is lowered to a position 200mm in the operation cabin 1-1, and the small-flow water pump 3-3 continuously operates;

(5) Repairing operation is carried out, and the small-flow water pump 3-3 continues to operate;

(6) The repair operation is completed, the small-flow water pump 3-3 stops operating, the closing system performs unlocking operation, and the main telescopic oil cylinder 2-1 is completely contracted to enable the operation cabin 1-1 to be completely opened;

(7) The invention is lifted.

The invention greatly reduces the repair difficulty of submarine pipelines and submarine cables by creating a dry environment; the flexible section 1-2 is arranged to enable the equipment to adapt to the situation that the front end face and the rear end face of the operation cabin 1-1 are not parallel, so that the operation cabin 1-1 can clamp the bent seabed column 4.

In the description of the present invention, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the system or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The dry environment construction device suitable for bending seabed columns is characterized by comprising a left half cabin (1-1-1) and a right half cabin (1-1-2) which are identical in structure and symmetrically arranged, wherein the left half cabin (1-1-1) and the right half cabin (1-1-2) are hinged through a rotating shaft (1-3) at the top, the tops of the left half cabin (1-1-1) and the right half cabin (1-1-2) are provided with semicircular opening and closing systems for driving the left half cabin (1-1-1) and the right half cabin (1-2) by taking the rotating shaft (1-3) as an axis so that the bottom of the left half cabin (1-1-1) and the bottom of the right half cabin (1-1-2) are closed to form an operation cabin (1-1), and two ends of the left half cabin (1-1-1-2) are provided with channels, and two ends of the left half cabin (1-1-1) and the right half cabin (1-2) are provided with circular through holes for forming two ends of the seabed column-shaped objects (4) after the bottom of the left half cabin (1-1-1 and the right half cabin; the two ends of the left half cabin (1-1-1) close to the end parts and the two ends of the right half cabin (1-1-2) close to the end parts are respectively provided with a flexible section (1-2); the top of the left half cabin (1-1-1) or the right half cabin (1-1-2) is provided with an air-permeable through hole (5) which is communicated to the upper part of the sea surface through a pipeline, 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) which is used for pumping out the seawater in the operation cabin (1-1).

2. A dry environment building device suitable for bending subsea columns according to claim 1, characterized in that sealing strips (1-5) are provided on both the mutually facing peripheral walls of the left half-pod (1-1-1) and the right half-pod (1-1-2) and on the inner walls of the semicircular channels.

3. A dry environment building device suitable for bending a seabed column according to claim 1, wherein the two ends of the rotating shaft (1-3) extend out of the working cabin (1-1) respectively, the two ends of the rotating shaft (1-3) are both fixedly provided with downwardly extending supporting legs (1-4), and the bottom ends of the supporting legs (1-4) are fixedly provided with arc-shaped supporting pieces for supporting on the seabed column (4).

4. A dry environment building device adapted to bend a subsea column according to claim 1, characterized in that the upper parts of both ends in the left half-pod (1-1-1) and the upper parts of both ends in the right half-pod (1-1-2) are provided with auxiliary support ledges (1-6) for supporting on the subsea column (4), the flexible segment (1-2) being provided between the auxiliary support ledges (1-6) and the ends of the working pod (1-1).

5. The dry environment building device suitable for bending a seabed column according to claim 1, wherein the opening and closing system comprises a main telescopic oil cylinder (2-1), the top of the left half cabin (1-1) and the top of the right half cabin (1-1-2) are respectively provided with a connecting frame (2-4), and two ends of the main telescopic oil cylinder (2-1) are respectively connected with the two connecting frames (2-4).

6. A dry environment building apparatus suitable for bending subsea columns according to any of claims 1-5, characterized in that the top of the left half-pod (1-1-1) and the top of the right half-pod (1-1-2) are provided with a limiting mechanism (1-7) for limiting the opening angle of the left half-pod (1-1-1) and the right half-pod (1-1-2).

7. A dry environment building apparatus suitable for bending a subsea column according to any of claims 1-5, characterized in that the opening and closing system further comprises a locking system for locking the bottom of the left half-tank (1-1-1) and the bottom of the right half-tank (1-1-2) after the bottom of the left half-tank (1-1-1) and the bottom of the right half-tank (1-1-2) are closed, the locking system comprising a secondary telescopic cylinder (2-2) mounted at the bottom of the right half-tank (1-1-2), the head of the telescopic rod of the secondary telescopic cylinder (2-2) is fixedly provided with a locking head (2-2-2), the bottom of the left half-tank (1-1) is provided with a locking mechanism (2-3) for locking or unlocking the locking head (2-2-2).

8. The dry environment building device for bending a seabed column according to claim 7, wherein the locking mechanism (2-3) comprises a locking mechanism main body (2-3-1), a lock hole (2-3-4) for inserting the lock head (2-2-2) is arranged on the locking mechanism main body (2-3-1), a locking groove (2-2-1) is arranged on the outer wall of the lock head (2-2-2), a limiting block (2-2-3) is arranged in the locking groove (2-2-1) in a sliding manner, one end of the limiting block (2-2-3) far away from the secondary telescopic cylinder (2-2) is connected with the side wall of the locking groove (2-2-1) through a first spring (2-2-4), a first guide inclined plane (2-2-5) is arranged on the limiting block (2-2-3) towards the secondary telescopic cylinder (2-2), a locking tongue (2-3) is connected with one end of the locking mechanism main body (2-3-1) through a second spring (2-3-3) into the lock tongue (2-3-2), and the side surface of one end, inserted into the lock hole (2-3-4), of the lock tongue (2-3-2) towards the secondary telescopic oil cylinder (2-2) is a second guide inclined surface (2-3-5).

9. A dry environment building apparatus adapted to bend a subsea column according to claim 8, characterized in that the locking head (2-2-2) is provided with a third guiding ramp (2-2-6) on the side wall of the end remote from the secondary telescopic cylinder (2-2).

10. A dry environment building apparatus suitable for bending a subsea column according to any of claims 1-5, characterized in that the pumping system (3) comprises a high flow pump (3-1) and a low flow pump (3-3), the high flow pump (3-1) being in communication with the bottom of the left half tank (1-1) or the bottom of the right half tank (1-1-2) through a pipe, the bottom of the left half tank (1-1) or the bottom of the right half tank (1-1-2) being provided with a sump (3-2), the low flow pump (3-3) being in communication with the bottom of the sump (3-2) through a pipe.