A connecting structure of oil pipe and oil return port of a marine lubricating oil circulation tank

Abstract

The invention discloses a connecting structure of an oil pipe and an oil return port in a marine lubricating oil circulation tank. During the oil connection construction, since the flange on the oil return port has not been installed yet, it is necessary to temporarily connect the oil pipe and the oil outlet through an auxiliary structure. At this time, the connecting flange is first fastened to the end plate at the pipe mouth of the oil pipe through a fastener, and then the other end face of the connecting flange is pressed against the oil outlet, and the connecting flange is pressed against the oil return port through a clamping structure, so that the oil pipe and the oil outlet are quickly connected. The connection is firm and safe, and the normal progress of the oil connection construction is ensured. Since it is only necessary to press the end face of the connecting flange against the oil pipe and the oil return port respectively, it is only necessary to ensure that the pipe mouth diameter of the oil pipe and the oil return port diameter are smaller than the outer circumferential diameter of the connecting flange. Therefore, the same set of connecting structures of oil pipe and oil return port in a marine lubricating oil circulation tank can be applied to situations with different oil return port diameters and pipe mouth diameters of the oil pipe, and has a wide range of application and strong versatility.

Description

Technical Field

[0001] The invention relates to a connecting structure of an oil pipe and an oil return port in a marine lubricating oil tank. Background Art

[0002] Large-scale low-speed marine diesel engines require lubricating oil lubrication and cooling during operation. Therefore, it is required to set up a lubricating oil circulation tank in the hull, and achieve pipeline closure by connecting the oil pipe of the lubricating oil circulation tank with the flange on the oil return port of the diesel engine to cool and clarify the lubricating oil used by the diesel engine. However, during the construction of the hull, it is necessary to carry out oil connection construction on the lubricating oil circulation tank. Before the oil connection construction, the flange on the oil return port of the diesel engine has not been installed, which results in that the oil connection pipe cannot be connected with the oil return port of the diesel engine during the oil connection construction, affecting the progress of the oil connection construction. In order to solve the above problems and ensure normal oil connection construction, the prior art is to directly weld the pipe mouth of the oil connection pipe to the top plate of the cabin, and then carry out the oil connection construction. After the oil connection construction is completed, the cabin is cleaned and the oil is removed, and the weld between the oil connection pipe and the cabin top plate is cut to remove the oil connection pipe, resulting in the complexity of the entire oil connection construction process, which is time-consuming and labor-intensive, and has high construction costs. Summary of the invention

[0003] The present invention aims to provide a connection structure of an oil pipe and an oil return port of a marine lubricating oil circulation tank which is convenient, reliable and safe to connect.

[0004] The present invention discloses a connecting structure of an oil string pipe and an oil return port for a marine lubricating oil circulation tank, comprising an oil string pipe and an oil return port fixed on a bulkhead, an end plate being sleeved on a side wall at the pipe opening of the oil string pipe, a connecting flange being arranged between the end plate at the pipe opening of the oil string pipe and the oil return port, a through hole of the connecting flange being opposite to the pipe opening of the oil string pipe and the oil return port, one side of the connecting flange being fastened to the end plate at the pipe opening of the oil string pipe by a fastener, and the other side of the connecting flange being pressed onto the oil return port by a pressing structure.

[0005] The oil pipe and oil return port connection structure for a marine lubricating oil circulation tank described in the present invention has a need to temporarily connect the oil pipe and the oil outlet through an auxiliary structure during the oil construction because the flange on the oil return port has not been installed yet. At this time, the connecting flange is first fastened to the end plate at the oil pipe orifice through a fastener, and then the other end face of the connecting flange is pressed against the oil outlet, and the connecting flange is pressed against the oil return port through a clamping structure, so that the oil pipe and the oil outlet are quickly connected, the connection is firm and safe, and the normal progress of the oil construction is ensured. Since only the end faces of the connecting flange need to be pressed against the oil pipe and the oil return port respectively, it is only necessary to ensure that the diameter of the oil pipe orifice and the diameter of the oil return port are smaller than the outer circumferential diameter of the connecting flange. Therefore, the same set of oil pipe and oil return port connection structures for a marine lubricating oil circulation tank can be applied to situations with different oil return port diameters and oil pipe orifice diameters, and has a wide range of application and strong versatility.

[0006] The clamping structure includes a plurality of magnetic suction cups and a plurality of clamping codes whose number is the same as the number of the magnetic suction cups. The plurality of magnetic suction cups are arranged at intervals along the outer circumference of the connecting flange. Each magnetic suction cup is adsorbed on the bulkhead. A horizontal strip through hole parallel to the bulkhead is arranged on each magnetic suction cup. The clamping code is L-shaped. After one side of the clamping code passes through the horizontal strip through hole on the corresponding magnetic suction cup, the end of the side passes through the horizontal strip through hole and extends to the top of the connecting flange, and the end of the other side of the clamping code is against the bulkhead. A threaded hole is arranged on the part of the clamping code that passes through the horizontal strip through hole and extends to the top of the connecting flange. The clamping bolt is screwed into the threaded hole, and its end is pressed against the end face of the connecting flange to press the connecting flange against the oil return port. The magnetic suction cup is tightly adsorbed on the bulkhead to provide sufficient supporting strength. Through the cooperation of the clamping code, the magnetic suction cup and the clamping bolt, the clamping code is subjected to force during the tightening process of the clamping bolt. At this time, the magnetic suction cup provides sufficient supporting strength, which can make the locking effect of the clamping bolt better, and further ensure that the connecting flange is firmly and safely pressed against the oil return port; in addition, since several magnetic suction cups are arranged along the outer circumference of the connecting flange, different clamping forces can be applied according to different positions of the end face of the connecting flange when adjusting the clamping bolt, so that the end face of the connecting flange is evenly pressed against the oil return port.

[0007] Alternatively, the clamping structure includes a plurality of clamping codes and tensioning screws with the same number of clamping codes, the clamping code being L-shaped. When the clamping code is installed on the oil return port, part of the long side of the clamping code extends into the oil return port, and the short side of the clamping code is parallel to the side wall of the oil return port. A bar through hole is provided on the long side of the clamping code and on the part extending into the oil return port, and a mounting screw hole is provided on the short side of the clamping code. The locking bolt is screwed into the mounting screw hole on the corresponding clamping code, and the screwed-in end thereof is tightened against the side wall of the oil return port. After each tensioning screw passes through the corresponding bar through hole on the clamping code, its insertion end is tightened into the threaded hole on the connecting flange, and the tensioning screw is locked to the clamping code by a locking nut to tighten the oil return port against the connecting flange. Through the cooperation of the tightening screw, the clamping code, the locking nut and the locking bolt, the clamping structure can press the oil return port tightly against the connecting flange to ensure that the connecting flange is firmly and safely connected to the oil return port and the oil string pipe; in addition, since a strip through hole is provided on the long side of the clamping code and on the part extending into the oil return port, the position of the tightening screw relative to the strip through hole can be moved to adapt to oil return ports of different diameters, thereby further improving the application scope of the clamping structure; and the clamping code is locked on the oil return port by the locking bolt, so that the clamping code provides greater supporting strength for the tightening screw and the locking nut, thereby more effectively ensuring the clamping function of the clamping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 and Figure 2 It is a schematic diagram of the structure of the present invention.

[0009] Figure 3 and Figure 4 Schematic diagram of the connecting flange structure.

[0010] Figure 5 for Figure 3 and Figure 4 A partial enlarged view of part A.

[0011] Figure 6 It is the left view of the magnetic suction cup structure.

[0012] Figure 7 It is a top view of the clamping card code (the clamping card code that matches the tensioning screw).

[0013] Figure 8 It is a structural diagram of the clamping card code (the clamping card code matched with the magnetic suction cup). DETAILED DESCRIPTION

[0014] A connecting structure of a lubricating oil circulation tank oil pipe and an oil return port for a ship, such as Figure 1 to Figure 2 As shown, it includes an oil string pipe 6 and an oil return port 8 fixed on a bulkhead 7, and an end plate 9 is sleeved on the side wall at the pipe opening of the oil string pipe 6. It is characterized in that a connecting flange 1 is arranged between the end plate 9 at the pipe opening of the oil string pipe 6 and the oil return port 8, and a through hole 10 of the connecting flange 1 is opposite to the pipe opening of the oil string pipe 6 and the oil return port 8. One side of the connecting flange 1 is fastened to the end plate 9 at the pipe opening of the oil string pipe 6 as a whole through a fastener, and the other side of the connecting flange 1 is pressed on the oil return port 8 through a pressing structure. The fasteners may be bolts or screws, etc.

[0015] like Figure 1 , Figure 3 as well as Figure 6 , Figure 8As shown, the clamping structure includes a plurality of magnetic suction cups 4 and a plurality of clamping codes 2 whose number is the same as that of the magnetic suction cups 4. The plurality of magnetic suction cups 4 are arranged at intervals along the outer circumference of the connecting flange 1, and each magnetic suction cup 4 is adsorbed on the bulkhead 7. A horizontal strip through hole 11 parallel to the bulkhead 7 is arranged on each magnetic suction cup 4. The clamping code 2 is L-shaped. After one side of the clamping code 2 passes through the horizontal strip through hole 11 on the corresponding magnetic suction cup 4, the end of the side passes through the horizontal strip through hole 11 and extends to the top of the connecting flange 1, and the end of the other side of the clamping code 2 abuts against the bulkhead 7. A threaded hole is arranged on the part of the clamping code 2 that passes through the horizontal strip through hole 11 and extends to the top of the connecting flange 1. The clamping bolt 3 is screwed into the threaded hole, and its end abuts against the end face of the connecting flange 1 to abut the connecting flange 1 against the oil return port 8, wherein the magnetic suction cup is a prior art. The spacing between adjacent clamping codes 2 is the same, and the side walls of the magnetic suction cup 4 corresponding to each clamping code 2 are against the side walls of the connecting flange 1. Since the spacing between adjacent clamping codes 2 is the same, the force on the connecting flange 1 can be further made more uniform and will not warp; and the side walls of each magnetic suction cup 4 are against the side walls of the connecting flange 1, which can limit the displacement of the connecting flange 1.

[0016] like Figure 2 , Figure 4 as well as Figure 7 As shown, or the clamping structure includes a plurality of clamping card codes 2 and a tightening screw 13 with the same number as the clamping card codes 2, the clamping card code 2 is L-shaped, and when the clamping card code 2 is installed on the oil return port 8, a portion of the long side of the clamping card code 2 extends into the oil return port 8, and the short side of the clamping card code 2 is parallel to the side wall of the oil return port 8, and a strip through hole 14 is provided on the long side of the clamping card code 2 and on the portion extending into the oil return port 8, and a strip through hole 14 is provided on the clamping card code 2. The short side of the code 2 is provided with a mounting screw hole, and the locking bolt 15 is screwed into the mounting screw hole on the corresponding card machine code 2, and its screwed-in end is tightly pressed against the side wall of the oil return port 8. After each tensioning screw 13 passes through the bar-shaped through hole 14 on the corresponding clamping code 2, its insertion end is screwed into the threaded hole 16 on the connecting flange 1, and the tensioning screw 13 is locked on the clamping code 2 by the locking nut 17 to tighten the oil return port 8 against the connecting flange 1. The spacing between adjacent clamping codes 2 is the same, which can effectively ensure that when the clamping structure is used to clamp the oil return port 8, the oil return port is subjected to more uniform force and will not be lifted. A vertical plate 18 parallel to the short side of the clamping code 2 is arranged on the long side of each clamping code 2, and there is a spacing between the vertical plate 18 and the short side of the clamping code 2, and the spacing forms a clamping groove 19 clamped on the side wall of the oil return port. By clamping the clamping groove 19 on the side wall of the oil return port 8, the oil return port 8 can be effectively prevented from shifting when the clamping structure is installed.

[0017] like Figure 5As shown, an annular toothed surface 12 is respectively arranged on the end surface of the connecting flange 1 facing the oil string pipe 6 and at the through hole 10 close to the connecting flange 1, and on the end surface of the connecting flange 1 facing the oil return port 8 and at the edge of the connecting flange 1, and an annular sealing gasket 5 is arranged on the annular toothed surface 12. By arranging the annular sealing gasket 5, oil leakage during oil stringing construction can be further effectively avoided. In addition, the annular toothed surface 12 can increase the friction between the annular toothed surface 12 and the annular sealing gasket 5 thereon, so that the connection between the connecting flange 1 and the oil return port 8 and the connection between the connecting flange 1 and the end plate 9 on the oil string pipe 6 is more secure, and oil leakage during oil stringing construction can be further avoided.

Claims

1. A connecting structure of an oil pipe and an oil return port of a marine lubricating oil circulation tank, comprising an oil pipe (6) and an oil return port (8) fixed on a bulkhead (7), an end plate (9) being sleeved on the side wall at the pipe opening of the oil pipe (6), characterized in that: A connecting flange (1) is provided between the end plate (9) at the pipe mouth of the oil string pipe (6) and the oil return port (8); a through hole (10) of the connecting flange (1) is opposite to the pipe mouth of the oil string pipe (6) and the oil return port (8); one side of the connecting flange (1) is fastened to the end plate (9) at the pipe mouth of the oil string pipe (6) as a whole by a fastener; the other side of the connecting flange (1) is pressed onto the oil return port (8) by a pressing structure; the pressing structure comprises a plurality of magnetic suction cups (4) and a plurality of clamping codes (2) the number of which is the same as that of the magnetic suction cups (4); the plurality of magnetic suction cups (4) are arranged at intervals along the outer circumference of the connecting flange (1); each magnetic suction cup (4) is adsorbed on the bulkhead (7); and a water-tight seal parallel to the bulkhead (7) is provided on each magnetic suction cup (4). A flat strip through hole (11), the clamping code (2) is L-shaped, one side of the clamping code (2) passes through the horizontal strip through hole (11) on the corresponding magnetic suction cup (4), the end of the side passes through the horizontal strip through hole (11) and extends to the top of the connecting flange (1), the end of the other side of the clamping code (2) abuts against the bulkhead (7), a threaded hole is provided on the portion of the clamping code (2) that passes through the horizontal strip through hole (11) and extends to the top of the connecting flange (1), the clamping bolt (3) is screwed into the threaded hole, the end of the clamping bolt (3) abuts against the end surface of the connecting flange (1), and the connecting flange (1) is abutted against the oil return port (8); the side wall of each magnetic suction cup (4) abuts against the side wall of the connecting flange (1); the spacing between adjacent clamping codes (2) is the same.

2. The connecting structure of the oil pipe and the oil return port of a marine lubricating oil circulation tank according to claim 1 is characterized in that: An annular toothed surface (12) is provided on the end surface of the connecting flange (1) facing the oil string pipe (6) and near the through hole (10) of the connecting flange (1) and on the end surface of the connecting flange (1) facing the oil return port (8) and near the edge of the connecting flange (1), and an annular sealing gasket (5) is provided on the annular toothed surface (12).

3. A connecting structure of an oil pipe and an oil return port of a marine lubricating oil circulation tank, comprising an oil pipe (6) and an oil return port (8) fixed on a bulkhead (7), an end plate (9) being sleeved on the side wall at the pipe opening of the oil pipe (6), characterized in that: A connecting flange (1) is provided between the end plate (9) at the pipe opening of the oil string pipe (6) and the oil return port (8); a through hole (10) of the connecting flange (1) is opposite to the pipe opening of the oil string pipe (6) and the oil return port (8); one side of the connecting flange (1) is fastened to the end plate (9) at the pipe opening of the oil string pipe (6) as a whole by a fastener; the other side of the connecting flange (1) is pressed onto the oil return port (8) by a clamping structure; the clamping structure comprises a plurality of clamping clamps (2) and a tightening screw (13) the same number as the clamping clamps (2); the clamping clamps (2) are L-shaped; when the clamping clamps (2) are installed on the oil return port (8), a part of the long side of the clamping clamps (2) extends into the oil return port (8), while a short side of the clamping clamps (2) is in contact with the oil return port (8). The side walls of the oil return port (8) are parallel to each other, a strip through hole (14) is provided on the long side of the clamping card code (2) and on the part extending into the oil return port (8), and a mounting screw hole is provided on the short side of the clamping card code (2). A locking bolt (15) is screwed into the mounting screw hole on the corresponding clamping card code (2), and its screwed-in end is tightened against the side wall of the oil return port (8). After each tensioning screw rod (13) passes through the strip through hole (14) on the corresponding clamping card code (2), its insertion end is screwed into the threaded hole (16) on the connecting flange (1), and the tensioning screw rod (13) is locked on the clamping card code (2) by a locking nut (17) to tighten the oil return port (8) against the connecting flange (1); the spacing between adjacent clamping card codes (2) is the same.

4. The connecting structure of the oil pipe and the oil return port of a marine lubricating oil circulation tank according to claim 3 is characterized in that: An annular toothed surface (12) is provided on the end surface of the connecting flange (1) facing the oil string pipe (6) and near the through hole (10) of the connecting flange (1) and on the end surface of the connecting flange (1) facing the oil return port (8) and near the edge of the connecting flange (1), and an annular sealing gasket (5) is provided on the annular toothed surface (12).

5. The connecting structure of the oil pipe and the oil return port of a marine lubricating oil circulation tank according to claim 4 is characterized in that: A vertical plate (18) parallel to the short side of the clamping code (2) is arranged on the long side of each clamping code (2), and a spacing is provided between the vertical plate (18) and the short side of the clamping code (2), the spacing forming a clamping groove (19) clamped on the side wall of the oil return port.

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