Double-partition device of oil ship

Abstract

The utility model relates to a double partition device for an oil ship, which is arranged between a left communicating pipeline and a right communicating pipeline and comprises a connecting short pipe and two blind through flanges, each blind through flange comprises a blind flange end and a through hole flange end which are arranged up and down, and a through hole is formed in the center of each through hole flange end. The connecting short pipe is welded between the through holes of the two through hole flange ends, the blind plate flange end and the through hole flange end are provided with an upper bolt hole and a lower bolt hole corresponding to the connecting flange of the communicating pipeline respectively, and the upper bolt hole and the lower bolt hole in the same horizontal radial front and back side are communicated through the vertical bolt sliding groove. According to the utility model, the partition operation time of a dangerous area and a safe area is effectively shortened, the storage management problem of the traditional detachable short pipes is solved, the mixed use and loss risks of the short pipes in the collecting pipe area are avoided, and efficient, stable and reliable isolation protection of the double partition system of the oil ship is realized.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, specifically to a double-partition device for oil and gas tankers. Background Technology

[0002] In the safe operation system of oil tankers, in accordance with the requirements of industry standards such as the International Maritime Organization (IMO) International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code), a double barrier must be built between the dangerous area and the safe area of ​​the oil tanker to prevent major safety accidents caused by the leakage of flammable, explosive, toxic and harmful media.

[0003] Currently, traditional double-isolation systems generally employ a structure of detachable short pipes paired with two shut-off valves, requiring isolation for different types of cargo and connection for the same type of cargo. However, this approach has several drawbacks in practical applications: firstly, the disassembly and assembly of short pipes consumes significant manpower and time, and their storage and management are difficult, requiring dedicated storage space and maintenance measures; secondly, short pipes of different specifications are easily confused during storage and installation, and misinstallation will directly compromise the sealing of the double-isolation system; the risk of component loss is also high, not only increasing maintenance costs but also potentially leading to media leakage due to missing or misinstalled short pipes, severely weakening the reliability and stability of the double-isolation system and causing unpredictable safety hazards. Therefore, there is an urgent need to design a double-isolation device for oil tankers that can effectively shorten the isolation operation time between hazardous and safe areas, solve the storage and management problems of traditional detachable short pipes, avoid the risks of mixed use and loss of short pipes in the manifold area, and achieve efficient, stable, and reliable isolation and protection for oil tanker double-isolation systems. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a dual-isolation device for oil and gas tankers. Through innovative structural design, it effectively shortens the isolation operation time between dangerous and safe areas, solves the problem of traditional detachable short pipe storage and management, avoids the risk of mixed use and loss of short pipes in the pipe gathering area, and realizes efficient, stable and reliable isolation and protection of the dual-isolation system for oil and gas tankers.

[0005] The purpose of this utility model is achieved as follows:

[0006] A double-partition device for an oil tanker is installed between two connecting pipes on the left and right sides. It includes a connecting short pipe and two blind flanges. The blind flanges include a blind flange end and a through-hole flange end, which are arranged vertically. The through-hole flange end has a through hole in the center. The connecting short pipe is welded between the through holes of the two through-hole flange ends. The blind flange end and the through-hole flange end have upper bolt holes and lower bolt holes respectively corresponding to the connecting flanges of the connecting pipes. A vertical bolt groove connects the upper and lower bolt holes on the same side in the horizontal radial direction.

[0007] Preferably, the connecting short pipe is a straight pipe, which connects the through-hole flange ends of the two blind flanges to form a medium flow channel.

[0008] Preferably, the two vertical bolt grooves are symmetrically distributed front and rear, the two upper bolt holes are symmetrically arranged in the horizontal radial direction at the blind flange end, and the two lower bolt holes are symmetrically arranged in the horizontal radial direction at the through flange end.

[0009] Preferably, a stainless steel reinforcing tube is also provided between the two blind flange ends.

[0010] Preferably, there are two stainless steel reinforcing tubes, one above the other, symmetrically arranged in the vertical diameter direction at the end of the blind flange.

[0011] Preferably, the blind flange is provided with a handle at the top.

[0012] The beneficial effects of this utility model are:

[0013] Significantly improved operational efficiency: Compared to traditional detachable short pipes, this device only requires disassembling the blind flange and connecting bolts of the connecting pipe when performing isolation operations between hazardous and safe areas. There is no need to disassemble the entire short pipe. The operation time is reduced from 30 minutes to 10 minutes, which greatly improves operational efficiency. It is especially suitable for emergency isolation scenarios, saving valuable time in response to sudden safety incidents.

[0014] Significantly enhanced reliability: Reduces interface wear caused by frequent disassembly of short pipes, effectively reduces leakage risk, and improves long-term system stability.

[0015] Maintenance costs are significantly reduced: By reducing wear on moving parts, especially avoiding frequent disassembly of short pipes and valve interfaces, the maintenance cycle of check valves and other components is extended by approximately 40%, significantly reducing maintenance costs. At the same time, the reduced manpower and material resources required for short pipe storage management further lower operating costs.

[0016] Excellent spatial adaptability: The short tube length can be shortened to half of the traditional solution, the structure is more compact, and it can easily adapt to complex installation spaces such as narrow compartments of oil tankers, thereby improving the utilization rate of ship space. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a double-partition device for an oil tanker according to the present invention.

[0018] Figure 2 This is the front view of the blind flange.

[0019] in:

[0020] Connecting pipe 1; connecting flange 1.1; blind flange 2; blind flange end 2.1; upper bolt hole 2.1.1; through-hole flange end 2.2; through hole 2.2.1; lower bolt hole 2.2.2; vertical bolt groove 2.3; connecting short pipe 3; stainless steel reinforcing pipe 4; handle 5; connecting bolt 6. Detailed Implementation

[0021] See Figure 1 and Figure 2 This utility model relates to a double-partition device for oil tankers, which is installed between two connecting pipes 1 on the left and right sides. It includes two blind flanges 2 and a connecting short pipe 3. The blind flange 2 is made of a steel plate with a thickness of 15mm. The blind flange 2 includes a blind flange end 2.1 and a through-hole flange end 2.2 arranged on the upper and lower sides. The through-hole flange end 2.2 has a through hole 2.2.1 in the center. The connecting short pipe 3 is welded between the two through holes 2.2.1. The connecting short pipe 3 is a straight pipe. The connecting short pipe 3 connects the through-hole flange ends 2.2 of the two blind flanges 2 to form a medium flow channel.

[0022] The blind flange end 2.1 and the through-hole flange end 2.2 corresponding to the connecting flange 1.1 of the connecting pipe 1 are respectively provided with upper bolt holes 2.1.1 and lower bolt holes 2.2.2. The two upper bolt holes 2.1.1 are located in the horizontal radial direction of the blind flange end 2.1, and the two lower bolt holes 2.2.2 are located in the horizontal radial direction of the through-hole flange end 2.2. Vertical bolt grooves 2.3 connect the upper and lower bolt holes 2.1.1 and 2.2.2 on the same side of the horizontal radial direction. The two vertical bolt grooves 2.3 are symmetrically distributed front and back.

[0023] A stainless steel reinforcing tube 4 is also provided between the two blind flange ends 2.1. There are two stainless steel reinforcing tubes 4, one above the other. The two stainless steel reinforcing tubes 4 are symmetrically arranged in the vertical diameter direction of the blind flange ends and avoid the upper bolt hole 2.1.1 and the vertical bolt groove 2.3 to improve the overall connection strength and accurately fix the distance between the two blind flange ends 2.1 located on the upper part of the blind flange 2 to ensure structural stability.

[0024] The blind flange 2 is equipped with a handle 5 on top, which facilitates the overall pushing of the device and quickly realizes the blind switching of the connecting pipe 1.

[0025] Each connecting pipe 1 is equipped with a connecting flange 1.1 corresponding to each blind flange 2. Each side of the connecting pipe 1 is equipped with a shut-off valve (not shown in the figure) to precisely control the flow direction of the medium and realize the dynamic sealing function of the double isolation system.

[0026] The connecting short pipe 3 is made of 316L stainless steel and is 200mm long, which fully meets the requirements for bolt disassembly space and sealing. After the connecting short pipe 3 is welded to the two blind flanges 2 on the left and right, it needs to be subjected to non-destructive testing such as radiographic testing (RT) or ultrasonic testing (UT) to ensure the welding quality in all aspects and ensure that the welded joint is free of defects such as cracks and porosity.

[0027] Working principle:

[0028] When the connecting pipe 1 is connected to the lower bolt hole 2.2.2 of the corresponding side through-hole flange end 2.2 via the connecting bolt 6, the connecting pipe 1 is connected to the connecting short pipe through the through hole 2.2.1, and the medium flow channel is open.

[0029] When the medium flow channel needs to be interrupted, only the horizontal radial connecting bolt 6 is loosened, the remaining connecting bolts 6 are removed, and the device is pushed down. The horizontal radial connecting bolt 6 slides to the vertical bolt groove 2.3, realizing the rapid pre-installation of the connecting pipe 1 and the blind flange end 2.1. Then the remaining connecting bolts and the upper bolt hole 2.1.1 are installed.

[0030] Practical application verification shows that the device reduces the operation time from 30 minutes in the traditional solution to 10 minutes during the isolation operation; no leakage occurred during the one-year service period, and the number of maintenance times was reduced by 40% compared with the traditional solution, effectively improving the performance and economic benefits of the double isolation system.

[0031] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. An oiling ship double bulkhead device which is provided between left and right two communicating pipes, characterized in that: It includes a connecting short pipe and two blind flanges. The blind flanges include a blind flange end and a through-hole flange end, which are arranged at the top and bottom. The through-hole flange end has a through hole in the center. The connecting short pipe is welded between the through holes of the two through-hole flange ends. The blind flange end and the through-hole flange end have upper bolt holes and lower bolt holes respectively corresponding to the connecting flanges of the connecting pipe. The vertical bolt groove connects the upper and lower bolt holes on the same side of the horizontal radial direction.

2. An oilized ship double bulkhead according to claim 1, characterized in that: The connecting short pipe is a straight pipe that connects the through-hole flange ends of the two blind flanges to form a medium flow channel.

3. An oilized ship double bulkhead according to claim 1, characterized in that: Two vertical bolt grooves are symmetrically distributed front and back, and two corresponding upper bolt holes are symmetrically arranged in the horizontal radial direction at the blind flange end, while two lower bolt holes are symmetrically arranged in the horizontal radial direction at the through flange end.

4. An oilized ship double bulkhead according to claim 1, characterized in that: A stainless steel reinforcing tube is also installed between the two blind flange ends.

5. An oilized ship double bulkhead according to claim 4, characterized in that: Two stainless steel reinforcing tubes are provided at the top and bottom, and the two stainless steel reinforcing tubes are symmetrically arranged in the vertical diameter direction at the end of the blind flange.

6. An oilized ship double bulkhead according to claim 1, characterized in that: The blind flange is equipped with a handle at the top.

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