Deepwater shear expander with universal oil way connector and operation method

Abstract

The invention provides a deepwater shear expander with a universal oil way connector and an operation method, the deepwater shear expander comprises a butt joint device with the universal oil way connector and a shear expansion arm, the butt joint device comprises a butt joint male head and a butt joint female head, rapid connection and self-locking are achieved through an axial locking device, and it is ensured that a hydraulic oil way is sealed reliably; the female head hydraulic cylinder drives the butt joint male head and the butt joint female head to be in butt joint, and the universal interface supports replacement of various tools. The shearing expansion arm is integrated with a two-way hydraulic lock, a shearing object is fixed through a wave-shaped cutting edge and cutting is completed, and a sawtooth-shaped alloy steel reinforcing tool bit enhances expansion friction force and supporting force. The deep-sea tool has the composite functions of shearing and expanding, the problems that a deep-sea tool is single in function and complex in operation are solved, the high-strength material and the sealing design adapt to the high-pressure and low-temperature environment, the deep-sea operation efficiency and reliability are remarkably improved, and meanwhile the operation risk and cost are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of underwater operation tools, and particularly relates to a deep - water shearing and expanding device with a universal oil circuit interface and an operation method thereof. Background Art

[0002] With the continuous deepening of ocean resource development and deep - sea scientific research, the demand for deep - sea operations is increasing day by day. In the deep - sea environment, operations such as demolition and shearing are often required, such as shipwreck salvage, submarine cable repair, deep - sea rescue, and seabed mineral resource development. However, the deep - sea environment is characterized by high pressure, low temperature, darkness, etc. Traditional land - based demolition tools and simple underwater manual tools are difficult to meet the requirements of these complex operations. Developing an efficient and reliable demolition tool suitable for the deep - sea environment is particularly important. At present, there have been some researches and applications in the field of underwater demolition tools at home and abroad. For example, hydraulic shears and expanders are widely used in fire fighting and earthquake rescue, but most of these tools are only suitable for land environments and cannot be directly applied to deep - sea operations. Deep - sea operation tools need to have higher strength, sealing performance, and reliability to cope with the extreme conditions of the deep sea. In addition, deep - sea operations are usually completed by manned submersibles or remotely operated underwater vehicles (ROVs), so the demolition tools need to be compatible with these devices and can be operated through manipulators. In the design of deep - sea tools, oil - circuit docking is a key technical issue. Hydraulic oil - circuit docking in the deep - sea environment needs to ensure quick connection, reliable sealing, and avoid hydraulic oil leakage during the docking process to prevent pollution to the marine environment. Most of the existing oil - circuit docking devices have complex structures, cumbersome operations, and are difficult to meet the requirements of the deep - sea high - pressure environment. In addition, most of the existing deep - sea demolition tools have single functions, either only able to shear or only able to expand, and cannot meet multiple operation requirements at the same time, resulting in low operation efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a deep - water shearing and expanding device with a universal oil circuit interface and an operation method thereof, which can realize the composite functions of expansion and shearing through hydraulic drive, and can efficiently complete operation tasks such as submarine cable shearing, structure demolition, and slit expansion.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A deep - water shearing and expanding device with a universal oil circuit interface includes: a docking device with a universal oil circuit interface, and a shearing and expanding arm. The docking device includes a male docking head and a female docking head, and the male docking head is connected to the shearing and expanding arm through a hose.

[0006] The male docking head includes a male head body, which has a male head housing on the outside. Inside the male head body, there is a male head oil passage for hydraulic oil to pass through. The male head oil passage is connected to the inside of the guide sleeve. Inside the guide sleeve, there is a male head spring, and the male head spring is connected to the male head moving sleeve.

[0007] The female docking head includes a female head body, which has a female head housing on the outside. Inside the female head body, there is a female head oil passage. Inside the oil chamber between the female head oil passage and the joint flange at the other end of the female head oil passage, there is a female head spring. The female head spring is connected to the female head moving sleeve. The female head moving sleeve is in contact connection with the joint flange. The female head spring and the female head moving sleeve are sleeved on the ejector pin, and the ejector pin is fixedly connected to the female head body. At the tail of the female head body, a female head hydraulic cylinder is installed. The piston rod of the female head hydraulic cylinder of the female head hydraulic cylinder is connected to the female head body.

[0008] Furthermore, an axial locking device is also included. The axial locking device includes a fixing pin installed on the female head body. The fixing pin slides in the fixing pin sliding groove on the female head housing. The fixing pin is connected to the locking inclined surface, and the locking inclined surface forms an interference fit with the female head housing. The female head body moves towards the male docking head under the push of the female head hydraulic cylinder, driving the locking inclined surface to move towards the male head direction. The locking inclined surface presses down the locking steel ball into the locking groove of the male head body, and the locking steel ball locks the axial positions of the male docking head and the female docking head.

[0009] Furthermore, the locking steel ball is installed in a hole on the female head housing. The locking steel ball has a convex structure, and a small spring is installed between the convex structure and the female head housing. The small spring supports the locking steel ball to ensure that when the male docking head and the female docking head are not docked, the locking steel ball can be restored to its original position.

[0010] Furthermore, a two-way hydraulic lock is installed at the tail of the shearing and expanding arm. The two-way hydraulic lock is connected to the shearing and expanding arm hydraulic cylinder. The shearing and expanding arm hydraulic cylinder is connected to the shearing wavy blade through a connecting rod. The wavy blade is used to clamp the cable for shearing. The head of the shearing wavy blade has a serrated alloy steel reinforcing blade head, and the serrated alloy steel reinforcing blade head is used to enhance the friction and supporting force during expansion.

[0011] Furthermore, the two-way hydraulic lock includes two pilot-operated check valves. The pilot-operated check valves respectively control the oil inlet passage and the oil return passage of the shearing and expanding arm hydraulic cylinder. The two-way hydraulic lock conducts the oil passage under the action of the hydraulic oil pressure and closes the oil passage when there is no hydraulic oil pressure to keep the position of the hydraulic cylinder piston unchanged.

[0012] Furthermore, an interference fit is provided between the female head moving sleeve and the ejector pin to ensure the sealing of the oil circuit.

[0013] Furthermore, a docking device handle is installed on the docking male head.

[0014] Furthermore, a shearing and expanding arm handle is installed outside the shearing and expanding arm.

[0015] The present invention may further include:

[0016] An operation method of the deep - water shearing and expanding tool with a universal oil - circuit interface as described above, the method comprising the following steps:

[0017] The female head is fixed on a manned submersible or a remotely operated underwater vehicle with an oil source, the docking female head is connected to the oil source, the manipulator of the manned submersible or the remotely operated underwater vehicle operates the docking male head to align with the docking female head and perform docking. The female - head hydraulic cylinder pushes the female - head main body to move towards the male - head main body. The guide sleeve, through the interface - head flange, pushes the female - head moving sleeve to move, and the female - head spring is compressed. At the same time, the ejector pin pushes the male - head moving sleeve to move, and the male - head spring is compressed. The oil circuits of the male head and the female head are connected. During the above process, the female - head main body drives the fixed pin and the locking inclined surface to move towards the male head, and the locking inclined surface presses the locking steel ball down into the locking groove to complete the axial locking of the docking device;

[0018] A hose is used to connect the oil circuit of the docking male head and the shearing and expanding arm. Hydraulic oil is passed into the two - way hydraulic lock of the shearing and expanding arm and drives the shearing - and - expanding - arm hydraulic cylinder to move. The piston of the hydraulic cylinder pushes the connecting rod to move, and the movement of the connecting rod drives the shearing and expanding arm to complete the shearing and expanding operations.

[0019] The beneficial effects of the present invention are as follows:

[0020] During the operation of the present invention, the hydraulic oil source is connected to the female head of the oil - circuit docking device. The manipulator of the manned submersible or the remotely operated underwater vehicle operates the male head and the female head to conduct oil - circuit docking. The male head and the deep - water shearing and expanding tool are connected by a hose. Hydraulic oil is supplied to the hydraulic cylinder of the shearing and expanding arm through the oil - circuit docking device. The piston of the shearing - and - expanding - arm hydraulic cylinder pushes the shearing and expanding arm and cooperates with its connecting rod to complete deep - water shearing or expanding operations.

[0021] The present invention has a compound function, integrating the shearing and expanding functions. Only one tool is required to complete multiple operation tasks, reducing the number of tool replacements and significantly improving the efficiency of deep - sea operations.

[0022] The present invention is suitable for the deep - sea environment. The oil - circuit docking device and the shearing and expanding arm are made of high - strength materials and can withstand extreme conditions such as high pressure and low temperature in the deep sea. The sealing design of the oil - circuit docking device and the pressure - maintaining function of the two - way hydraulic lock further improve the reliability of the tool in the deep - sea environment.

[0023] The operation of the present invention is simple. The male and female head oil circuit docking device is designed as a universal oil circuit interface, reducing the operation steps and improving the compatibility between the tool and the manned submersible or remotely operated underwater vehicle (ROV).

[0024] The structure of the present invention is compact. The shear and expansion arm hydraulic cylinder is connected to the linkage mechanism through the piston rod, directly driving the expansion arm to act. The number of parts is reduced, the volume of the entire deep-water shear and expander becomes smaller, the structure is simple and compact, saving materials while reducing transmission losses and improving mechanical efficiency.

[0025] The present invention realizes quick connection and self-locking through the axial locking device, ensuring reliable sealing of the hydraulic oil circuit; the female head hydraulic cylinder drives the docking male head and the docking female head to dock, and the universal interface supports the replacement of various tools. The shear and expansion arm integrates a two-way hydraulic lock, fixes the shearing object through the wavy blade and completes cutting, and the serrated alloy steel reinforced tool head enhances the expansion friction and supporting force. Description of the Drawings

[0026] Attached Figure 1 is the structural schematic diagram of the present invention.

[0027] Attached Figure 2 is the top view sectional view after the docking device of the present invention is connected.

[0028] Attached Figure 3 is the front view sectional view of the docking female head of the present invention before docking.

[0029] Attached Figure 4 is the front view sectional view of the docking male head of the present invention before docking.

[0030] Attached Figure 5 is the partial sectional schematic diagram of the docking device of the handle device carried by the present invention.

[0031] Attached Figure 6 is Attached Figure 5 the partial enlarged view of A in

[0032] Attached Figure 7 is the front view sectional view of the shear and expansion arm of the present invention.

[0033] Attached Figure 8 is the top view of the shear and expansion arm of the present invention.

[0034] Explanation of the marks in the figure:

[0035] 1-1: Hose, 2-1: Female head oil circuit, 2-2: Male head oil circuit, 3-1: Female head hydraulic cylinder, 3-2: Female head hydraulic cylinder piston rod, 3-3: Female head spring, 3-4: Top column, 3-5: Female head moving sleeve, 3-6: Female head housing, 3-7: Connector flange, 3-8: Female head main body, 4-1: Male head moving sleeve, 4-2: Male head spring, 4-3: Guide sleeve, 4-4: Male head housing, 4-5: Male head main body, 5-1: Fixed pin movement groove, 5-2: Fixed pin, 5-3: Locking inclined plane, 5-4: Locking steel ball, 5-5: Docking device handle, 5-6: Locking groove, 5-7: Docking device base, 5-8: Small spring, 6-1: Two-way hydraulic lock, 6-2: Shearing and expanding arm handle, 6-3: Shearing and expanding arm hydraulic cylinder, 7-1: Connecting rod, 7-2: Serrated alloy steel reinforced cutter head, 7-3: Wavy blade edge. Detailed implementation mode

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] The present invention provides a deep-water shearing and expanding device with a universal oil circuit interface. As shown in the attached Figure 1 figures, it includes a docking device with a universal oil circuit interface and a shearing and expanding arm. The docking device includes a docking male head and a docking female head. The docking male head is connected to the shearing and expanding arm through a hose. The universal oil circuit interface is adopted to replace different types of tools, improve the interchangeability of different types of tools, and be more suitable for underwater operations.

[0038] As shown in the attached Figure 2 , 3 figures, the docking female head includes a female head main body 3-8. The outside of the female head main body 3-8 has a female head housing 3-6. The inside of the female head main body 3-6 has a female head oil circuit 2-1. There is a female head spring 3-3 in the oil chamber between the female head oil circuit 2-1 and the connector flange 3-7 at the other end of the female head oil circuit 2-1. The female head spring 3-3 is connected to the female head moving sleeve 3-5. The female head moving sleeve 3-5 is in contact connection with the connector flange 3-7. The female head spring 3-3 and the female head moving sleeve 3-5 are sleeved on the top column 3-4. The top column 3-4 is fixedly connected to the female head main body 3-8. The tail of the female head main body 3-8 is equipped with a female head hydraulic cylinder 3-1. The female head hydraulic cylinder piston rod 3-2 of the female head hydraulic cylinder 3-1 is connected to the female head main body 3-8.

[0039] As shown in the attached Figure 2 , 4As shown in the figure, the male docking head includes a male head body 4-5. The outside of the male head body 4-5 is provided with a male head housing 4-4. Inside the male head body 4-5, there is a male head oil passage 2-2 for hydraulic oil to pass through. The male head oil passage 2-2 is internally connected to the inside of the guide sleeve 4-3. Inside the guide sleeve 4-3, there is a male head spring 4-2, and the male head spring 4-2 is connected to the male head moving sleeve 4-1.

[0040] As shown in the attached Figure 5 figure, this embodiment further includes an axial locking device. The axial locking device includes a fixed pin 5-2 installed on the female head body 3-8. The fixed pin 5-2 slides in a fixed pin sliding groove 5-1 on the female head housing 3-6. The fixed pin 5-2 is connected to a locking inclined surface 5-3. The locking inclined surface forms an interference fit with the female head housing 3-6. The female head body 3-8 moves towards the male docking head under the push of the female head hydraulic cylinder 3-1, driving the locking inclined surface 5-3 to move towards the male head direction. The locking inclined surface 5-3 presses the locking steel ball 5-4 into the locking groove 5-6 of the male head body 4-5. The locking steel ball 5-4 locks the axial positions of the male docking head and the female docking head. The axial locking device is used to ensure self-locking after the male docking head and the female docking head are connected, prevent hydraulic oil leakage, and ensure connection reliability.

[0041] As shown in the attached Figure 6 figure, the locking steel ball 5-4 is installed in a hole on the female head housing 3-6. The locking steel ball 5-4 has a convex structure. A small spring 5-8 is installed between the convex structure and the female head housing 3-6. The small spring 5-8 supports the locking steel ball 5-4 to ensure that when the male docking head and the female docking head are not docked, the locking steel ball 5-4 can be restored to its original position.

[0042] As shown in the attached Figures 7 - 8 figure, a two-way hydraulic lock 6-1 is installed at the tail of the shear expansion arm. The two-way hydraulic lock 6-1 is connected to the shear expansion arm hydraulic cylinder 6-3. The shear expansion arm hydraulic cylinder 6-3 is connected to the shear wave-shaped blade 7-3 through a connecting rod 7-1. The wave-shaped blade 7-3 is used to hold the cable for shearing. The head of the shear wave-shaped blade 7-3 has a serrated alloy steel reinforcing blade head 7-2, and the serrated alloy steel reinforcing blade head 7-2 is used to enhance the friction and supporting force during expansion. The two-way hydraulic lock 6-1 is used to keep the piston position of the shear expansion arm hydraulic cylinder 6-3 unchanged and prevent backtracking.

[0043] In this embodiment, the two-way hydraulic lock 6-1 includes two pilot-operated check valves, which respectively control the oil inlet and return oil circuits of the shear-expansion arm hydraulic cylinder 6-3. The two-way hydraulic lock 6-1 conducts the oil circuit under the action of hydraulic oil pressure and closes the oil circuit when there is no hydraulic oil pressure, so as to keep the position of the hydraulic cylinder piston unchanged.

[0044] In this embodiment, an interference fit is provided between the female head moving sleeve 3-5 and the ejector pin 3-4 to ensure the sealing of the oil circuit.

[0045] Preferably, a docking device handle 5-5 is installed on the docking male head.

[0046] Preferably, a shear-expansion arm handle 6-2 is installed outside the shear-expansion arm.

[0047] This embodiment further includes:

[0048] An operation method of the deep-water shear-expansion device with a universal oil circuit interface as described above, the method comprising the following steps:

[0049] The female head is fixed on a manned submersible or a remotely operated underwater vehicle (ROV) with an oil source. The docking female head is connected to the oil source. The manipulator of the manned submersible or the remotely operated underwater vehicle operates the docking male head to align with the docking female head and conduct docking. The female head hydraulic cylinder 3-1 pushes the female head body 3-8 to move towards the male head body 4-5. The guide sleeve 4-3 pushes the female head moving sleeve 3-5 to move through the interface head flange 3-7. The female head spring 3-3 is compressed. At the same time, the ejector pin 3-4 pushes the male head moving sleeve 4-1 to move, and the male head spring 4-2 is compressed. The oil circuits of the male head and the female head are connected. During the above process, the female head body 3-8 drives the fixing pin 5-2 and the locking inclined surface 5-3 to move towards the male head. The locking inclined surface 5-3 presses the locking steel ball 5-4 down into the locking groove 5-6 to complete the axial locking of the docking device, improving the reliability and sealing of the oil circuit docking.

[0050] A hose 1-1 is used to connect the oil circuit of the docking male head and the shear-expansion arm. The hydraulic oil is led into the two-way hydraulic lock 6-1 of the shear-expansion arm and pushes the shear-expansion arm hydraulic cylinder 6-3 to move. The hydraulic cylinder piston pushes the connecting rod 7-1 to move. The movement of the connecting rod 7-1 drives the shear-expansion arm to complete the shearing and expansion operations, without any retraction phenomenon, significantly improving the operation quality and efficiency.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A deep - water shearing and expanding device with a universal oil - circuit interface, characterized in that, Comprising: A docking device with a general oil circuit interface and a shearing and expanding arm. The docking device includes a male docking head and a female docking head. The male docking head is connected to the shearing and expanding arm through a hose; The male docking head includes a male head body (4-5). The outside of the male head body (4-5) has a male head housing (4-4). Inside the male head body (4-5), there is a male head oil circuit (2-2) for hydraulic oil to pass through. The male head oil circuit (2-2) is internally connected to the inside of a guide sleeve (4-3). Inside the guide sleeve (4-3), there is a male head spring (4-2). The male head spring (4-2) is connected to a male head moving sleeve (4-1); The female docking head includes a female head body (3-8). The outside of the female head body (3-8) has a female head housing (3-6). Inside the female head body (3-6), there is a female head oil circuit (2-1). Inside the oil cavity between the female head oil circuit (2-1) and a joint flange (3-7) at the other end of the female head oil circuit (2-1), there is a female head spring (3-3). The female head spring (3-3) is connected to a female head moving sleeve (3-5). The female head moving sleeve (3-5) is in contact connection with the joint flange (3-7). The female head spring (3-3) and the female head moving sleeve (3-5) are sleeved on a top column (3-4). The top column (3-4) is fixedly connected to the female head body (3-8). At the tail of the female head body (3-8), there is a female head hydraulic cylinder (3-1). The female head hydraulic cylinder piston rod (3-2) of the female head hydraulic cylinder (3-1) is connected to the female head body (3-8).

2. The deep-water shearing and expanding device with a universal oil circuit interface according to claim 1, wherein It further includes an axial locking device. The axial locking device includes a fixed pin (5-2) installed on the female head body (3-8). The fixed pin (5-2) slides in a fixed pin sliding groove (5-1) on the female head housing (3-6). The fixed pin (5-2) is connected to a locking inclined surface (5-3). The locking inclined surface forms an interference fit with the female head housing (3-6). The female head body (3-8) moves towards the male docking head under the push of the female head hydraulic cylinder (3-1), driving the locking inclined surface (5-3) to move towards the male head direction. The locking inclined surface (5-3) presses the locking steel ball (5-4) into a locking groove (5-6) of the male head body (4-5). The locking steel ball (5-4) locks the axial positions of the male docking head and the female docking head.

3. The deep-water cutting and spreading device with a universal oil circuit interface according to claim 2, wherein The locking steel ball (5-4) is installed in a hole on the female head housing (3-6). The locking steel ball (5-4) has a convex structure. A small spring (5-8) is installed between the convex structure and the female head housing (3-6). The small spring (5-8) supports the locking steel ball (5-4) to ensure that when the male docking head and the female docking head are not docked, the locking steel ball (5-4) can be restored to its original position.

4. The deep-water shearing and expanding device with a universal oil circuit interface according to claim 2 or 3, characterized in that A two-way hydraulic lock (6-1) is installed at the tail of the shearing and expanding arm. The two-way hydraulic lock (6-1) is connected to the shearing and expanding arm hydraulic cylinder (6-3). The shearing and expanding arm hydraulic cylinder (6-3) is connected to the shearing wavy blade (7-3) through a connecting rod (7-1). The wavy blade (7-3) is used to clamp the cable for shearing. The head of the shearing wavy blade (7-3) is provided with a serrated alloy steel reinforcing cutter head (7-2), and the serrated alloy steel reinforcing cutter head (7-2) is used to enhance the friction and supporting force during expansion.

5. The deep-water shearing and expanding device with a universal oil circuit interface according to claim 4, characterized in that The two-way hydraulic lock (6-1) includes two pilot-operated check valves. The pilot-operated check valves respectively control the oil inlet and return oil circuits of the shearing and expanding arm hydraulic cylinder (6-3). The two-way hydraulic lock (6-1) conducts the oil circuit under the action of the hydraulic oil pressure and closes the oil circuit when there is no hydraulic oil pressure to keep the position of the hydraulic cylinder piston unchanged.

6. The deep-water shearing and expanding device with a universal oil circuit interface according to claim 1, wherein An interference fit is provided between the female head moving sleeve (3-5) and the ejector pin (3-4) to ensure the oil circuit sealing performance.

7. The deep-water shearing and expanding device with a universal oil circuit interface according to claim 1, wherein A docking device handle (5-5) is installed on the docking male head.

8. The deep-water shearing and expanding device with a universal oil circuit interface according to claim 4, wherein A shearing and expanding arm handle (6-2) is installed outside the shearing and expanding arm.

9. An operation method of the deep-water shearing and expanding device with a universal oil circuit interface according to any one of claims 1-8, characterized in that, The method includes the following steps: The female head is fixed on a manned submersible or a remotely operated underwater vehicle with an oil source. The docking female head is connected to the oil source. The manipulator of the manned submersible or the remotely operated underwater vehicle operates the docking male head to align with the docking female head and conduct docking. The female head hydraulic cylinder (3-1) pushes the female head body (3-8) to move towards the male head body (4-5). The guide sleeve (4-3) pushes the female head moving sleeve (3-5) to move through the interface head flange (3-7). The female head spring (3-3) is compressed. At the same time, the ejector pin (3-4) pushes the male head moving sleeve (4-1) to move, and the male head spring (4-2) is compressed. The oil circuits of the male head and the female head are connected. During the above process, the female head body (3-8) drives the fixing pin (5-2) and the locking inclined surface (5-3) to move towards the male head. The locking inclined surface (5-3) presses the locking steel ball (5-4) down into the locking groove (5-6) to complete the axial locking of the docking device. A hose (1-1) is used to connect the oil circuit of the docking male head and the shearing and expanding arm. The hydraulic oil passes into the two-way hydraulic lock (6-1) of the shearing and expanding arm and drives the shearing and expanding arm hydraulic cylinder (6-3) to move. The hydraulic cylinder piston drives the connecting rod (7-1) to move, and the movement of the connecting rod (7-1) drives the shearing and expanding arm to complete the shearing and expanding operations.

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