Anti-electromagnetic interference detachable cable support for LNG transport ship

Abstract

The utility model relates to the field of ship construction, and provides an anti-electromagnetic interference detachable cable support for an LNG transport ship, which comprises two rows of support angle steels, a plurality of cable brackets are mounted on the support angle steels in the same row, and the cable brackets are detachably connected with the support angle steels through connecting pieces. A plurality of cable base plates are installed between the cable brackets which are installed on the two rows of supporting angle steel and are equal in height, and the two sides of each cable base plate are connected with the corresponding cable brackets respectively. The glass fiber reinforced plastic cable bracket is matched with the plastic cable base plate to form an insulated cable supporting frame, so that complete insulation between the cable and the metal piece is realized; meanwhile, by limiting the distance between the upper and lower layers of cable brackets and through the detachable connection and installation mode of the U-shaped hoops, the distance between the upper and lower cables can be conveniently adjusted, electromagnetic interference between the cables is effectively avoided, and finally the stability, accuracy and safety of an electrical system are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of shipbuilding, in particular to a detachable cable bracket for preventing electromagnetic interference of an LNG transport ship. Background Art

[0002] As the basic industrial platform for the intelligence and digitalization of modern ships, ship electrification and automation play a more prominent role in LNG carriers. LNG carriers are recognized as the ceiling of the shipbuilding industry, which puts forward more requirements for ship electrical process design and technology improvement.

[0003] The core of the safety of LNG transport ships is to ensure that the liquid LNG cargo maintains a constant temperature and pressure at minus 163 degrees Celsius. Therefore, a large number of sensors and remote control valves are required to monitor and control key locations such as LNG fuel tanks, cargo holds, and engine rooms. Therefore, in the actual design and construction process, there is a large amount of cross-laying of signal cables and power cables. When the AC cable is energized, an electromagnetic field will be formed in the surrounding area. Other cable conductors or metal loop materials will be magnetized in the periodically changing electromagnetic field, thereby forming a two-level voltage difference in the loop material, causing the signal current or voltage to be unstable. This ultimately leads to risks such as unstable monitoring signals of LNG ships and abnormal operation of remote control components.

[0004] Therefore, it is necessary to effectively avoid the electromagnetic interference of the electromagnetic field generated by the power cable on the signal cable from the perspective of material technology and design within the limited space of the LNG ship, so as to ensure that the electrical system of the LNG ship can be effectively monitored and operated, and improve the stability, accuracy and safety of the system. Summary of the invention

[0005] In order to solve the electromagnetic interference problem existing in the cross-laying process of the electrical system cables of the LNG ship, the utility model provides a detachable cable bracket for LNG transport ship to prevent electromagnetic interference.

[0006] The technical solution adopted by the utility model is:

[0007] A detachable cable bracket for preventing electromagnetic interference of an LNG carrier comprises two rows of supporting angle steels, wherein the supporting angle steels are vertically arranged and welded to the inner wall of the cabin, or the bottom of the supporting angle steels is welded to the floor of the cabin, the supporting angle steels in the same row are evenly spaced, the two rows of supporting angle steels are arranged correspondingly, a plurality of cable brackets are installed on the supporting angle steels in the same row, the cable brackets are horizontally arranged and extend along the arrangement direction of the supporting angle steels, and the plurality of cable brackets are evenly spaced up and down; the cable brackets are detachably connected to the supporting angle steels through a connecting piece, and the connecting piece is a U-shaped clamp. Both ends of the hoop are respectively provided with external threads, and the supporting angle steel is provided with multiple connecting holes along its length direction. The two ends of the U-shaped hoop pass through the connecting holes on the supporting angle steel, and nuts are installed at the ends of the U-shaped hoop. The cable bracket is fixed to the inner side of the U-shaped hoop and between the cable brackets; multiple cable pads are installed between the cable brackets of equal height installed on the two rows of supporting angle steels, and the two sides of the cable pads are respectively connected to the corresponding cable brackets, and the multiple cable pads are distributed at equal intervals along the length direction of the cable bracket; the cable bracket is a fiberglass bracket, and the cable pad is a plastic pad.

[0008] Furthermore, the cable bracket is provided with a plurality of mounting holes along its length direction, the shape of the mounting holes corresponds to the cross-section of the cable pad, and the two ends of the cable pad are respectively inserted into the mounting holes corresponding to the corresponding cable brackets.

[0009] Furthermore, the cable pad includes a supporting surface, and right-angle bending surfaces are respectively provided on both sides of the supporting surface in the width direction.

[0010] Furthermore, the cable bracket is a tubular structure, and the inner diameter of the arc segment of the U-shaped clamp corresponds to the outer diameter of the cable bracket.

[0011] Furthermore, the outer side of the U-shaped clamp is covered with a rubber insulating sheath.

[0012] Furthermore, the distance between the upper and lower cable brackets is greater than 100 mm.

[0013] After adopting the above technical scheme, the beneficial effects of the utility model are:

[0014] 1. In order to solve the problem of electromagnetic interference between cables, this technical solution forms an insulated cable support frame by combining a fiberglass cable bracket with a plastic cable pad. The U-shaped clamp connecting the cable bracket and the metal support angle steel adopts an insulating sheath to achieve complete insulation between the cable and the metal parts; at the same time, by limiting the distance between the upper and lower layers of the cable bracket and using the detachable connection and installation method of the U-shaped clamp, it is convenient to adjust the distance between the upper and lower cables, effectively avoiding electromagnetic interference between the cables, and ultimately ensuring the stability, accuracy and safety of the electrical system.

[0015] 2. Through the densely arranged connection holes on the supporting angle steel and the installation method of the U-shaped clamp, combined with the plug-in method between the cable pad and the cable bracket, the entire bracket can be quickly installed and disassembled to meet the use requirements of different cable laying occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is a top view of the utility model.

[0018] Figure 3 It is a side view of the utility model.

[0019] Figure 4 It is a three-dimensional schematic diagram of the utility model.

[0020] In the figure: supporting angle steel 1, cable bracket 2, cable pad 3, connecting piece 4, connecting hole 5, mounting hole 6. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0022] like Figure 1 As shown, a detachable cable bracket for preventing electromagnetic interference of an LNG carrier is provided, which is composed of a frame body consisting of a plurality of supporting angle steels 1, a plurality of cable brackets 2 and a plurality of cable pads 3, and is used for supporting power cables and signal cables for the ship's electrical system.

[0023] Multiple support angle steels 1 form the vertical support of the cable bracket. The support angle steels 1 are arranged in two rows, and the support angle steels 1 in the same row are distributed at equal intervals. The two rows of support angle steels 1 are arranged correspondingly, and the support angle steels 1 are fixedly welded to the bulkhead of the cabin or the top is welded to the top plate of the cabin, or the bottom is welded to the floor of the cabin to form a stable vertical support.

[0024] A plurality of cable brackets 2 and a plurality of cable pads 3 constitute the horizontal support of the cable bracket. The cable bracket 2 is horizontally arranged and extends along the arrangement direction of the support angle steel. The cable bracket 2 is detachably connected to the support angle steel 1 through a connector 4. The cable brackets 2 on the two rows of support angle steels 1 are arranged at equal heights, and a plurality of cable pads 3 with equal spacing are installed between the two corresponding cable brackets 2. The plurality of cable pads 3 and a pair of cable brackets 2 form a support plane, and the support plane is supported by the connection between the cable bracket 2 and the support angle steel 1. The support plane is used to support the cable along the laying direction of the cable.

[0025] There are multiple layers of supporting planes distributed up and down between two rows of supporting angle steels 1, and the distance between adjacent supporting planes is greater than 100mm to avoid electromagnetic interference. In order to further achieve insulation, the cable bracket 2 is made of glass fiber reinforced plastic, and the cable pad 3 is made of plastic pad material, which can effectively avoid contact between the cable and metal parts.

[0026] The cables are laid differently in different parts of the ship. In order to facilitate the adjustment of the spacing, the connection of the technical solution adopts a detachable manner.

[0027] First, the installation method of the cable bracket 2: the connector 4 adopts a U-shaped clamp, and each support angle steel 1 is provided with a plurality of connection holes 5 along its length direction, and the cable bracket is fixed to the corresponding support angle steel through the U-shaped clamp. The cable bracket 2 is a tubular structure, and the inner diameter of the arc segment of the U-shaped clamp corresponds to the outer diameter of the cable bracket 2. The U-shaped clamp is sleeved on the outside of the cable bracket 2 and its two ends are passed through the connection holes 5 on the support angle steel 1. The outlet end of the U-shaped clamp is provided with an external thread, and the cable bracket 2 is locked to the support angle steel 1 by the cooperation of the nut and the external thread. When the spacing needs to be adjusted, it is only necessary to adjust the connection point position of the U-shaped clamp and the support angle steel 1. The outside of the U-shaped clamp is also covered with an insulating sheath to further prevent the contact between the cable and the metal parts.

[0028] Next is the installation method of the cable pad 3: mounting holes 6 are respectively opened on opposite sides of a pair of corresponding cable brackets 2, and the two sides of the cable pad 3 are respectively inserted into the mounting holes 6 of the corresponding cable bracket 2, forming a detachable installation method. The number of cable pads 3 can be increased or decreased according to the number of cables, thereby ensuring sufficiently stable support. The cable pad 3 is a U-shaped plate with an opening facing downward, including a support surface, and right-angled bending surfaces are respectively provided on both sides of the width direction of the support surface, thereby increasing the rigidity of the cable pad 3, and the mounting hole 5 is a U-shaped hole corresponding to the cross section of the cable pad 3.

[0029] This technical solution adopts a detachable and adjustable spacing solution. It is designed for ship cable construction space that is very limited. The cable can be fixed layer by layer in the order of top-down or inside-out according to the construction plan. The spacing can be adjusted through the reserved connection holes, and the layer spacing can be adjusted according to the size of the cable outer diameter. In the later stage, when there is a need to add a system or repair and replace, the outer layer or the lower layer can be disassembled one by one without cutting the cable bracket.

Claims

1. A detachable cable support for electromagnetic interference prevention of an LNG carrier, comprising two rows of support angle steels, the support angle steels are vertically arranged and welded to the inner wall of the cabin, or the bottom of the support angle steels are welded to the floor of the cabin, the support angle steels in the same row are evenly spaced, the two rows of support angle steels are correspondingly arranged, a plurality of cable brackets are installed on the support angle steels in the same row, the cable brackets are horizontally arranged and extend along the arrangement direction of the support angle steels, and the plurality of cable brackets are evenly spaced up and down; characterized in that: The cable bracket is detachably connected to each of the supporting angle steels through a connecting piece, and the connecting piece is a U-shaped clamp, and both ends of the U-shaped clamp are respectively provided with external threads, and the supporting angle steel is provided with a plurality of connecting holes along its length direction, and the two ends of the U-shaped clamp pass through the connecting holes on the supporting angle steel, and nuts are installed at the ends of the U-shaped clamp, and the cable bracket is fixed to the inner side of the U-shaped clamp and between the cable brackets; a plurality of cable pads are installed between the cable brackets of equal height installed on the two rows of supporting angle steels, and the two sides of the cable pads are respectively connected to the corresponding cable brackets, and the plurality of cable pads are distributed at equal intervals along the length direction of the cable bracket; the cable bracket is a fiberglass bracket, and the cable pad is a plastic pad.

2. The LNG carrier anti-electromagnetic interference detachable cable bracket according to claim 1 is characterized in that: The cable bracket is provided with a plurality of mounting holes along its length direction. The shape of the mounting holes corresponds to the cross section of the cable pad. Both ends of the cable pad are respectively inserted into the mounting holes corresponding to the corresponding cable brackets.

3. The detachable cable bracket for LNG carrier against electromagnetic interference according to claim 2 is characterized in that: The cable pad comprises a supporting surface, and right-angle bending surfaces are respectively arranged on both sides of the supporting surface in the width direction.

4. The detachable cable bracket for preventing electromagnetic interference of LNG carrier according to claim 1 is characterized in that: The cable bracket is a tubular structure, and the inner diameter of the arc segment of the U-shaped clamp corresponds to the outer diameter of the cable bracket.

5. The detachable cable bracket for preventing electromagnetic interference of LNG carrier according to claim 1 is characterized in that: The outer side of the U-shaped clamp is covered with a rubber insulating sheath.

6. The detachable cable bracket for LNG carrier against electromagnetic interference according to claim 1 is characterized in that: The distance between the upper and lower cable brackets is greater than 100mm.

Images