Temperature sensor cable centralized laying device of LNG containment system

Abstract

The utility model relates to a temperature sensor cable centralized laying device of an LNG containment system, which comprises a film cabin centralized cabin penetrating mechanism, the centralized cabin penetrating mechanism comprises a low-temperature mounting plate, a first cabin penetrating piece, a second cabin penetrating piece and an outer casing, the center of the low-temperature mounting plate is connected with one end of the first cabin penetrating piece, and the other end of the first cabin penetrating piece is connected with the other end of the second cabin penetrating piece. The other end of the first cabin penetrating piece is connected with one end of the second cabin penetrating piece, and the other end of the second cabin penetrating piece is connected with the outer cover shell through the connecting circular plate. The low-temperature mounting plate is mounted on the cabin wall of the film fuel cabin, the first cabin penetrating piece is in a hollow cylinder shape, and one end of the first cabin penetrating piece penetrates through the low-temperature mounting plate and then extends out of the cabin wall of the film fuel cabin; the second cabin penetrating piece is in a transversely-arranged hollow cone frustum shape. According to the utility model, the operation stability and operability of equipment are ensured, the influence caused by external environment factors is avoided, the service life is long, and the later maintenance difficulty of sailors is reduced.

Description

Technical Field

[0001] The utility model relates to the application in the installation and fixation of ship cables, in particular to a centralized laying device for temperature sensor cables of an LNG containment system. Background Art

[0002] According to the GTT requirements of the LNG containment system, double sets of temperature sensors are usually installed at different locations in the secondary shielding insulation layer of the membrane type LNG fuel tank to detect the temperature of the point. The purpose is to detect possible insulation layer leakage and temperature monitoring of preheating during maintenance. The double sets of temperature sensors can be used as backup for each other and can be compared with each other to avoid the failure of a single sensor to determine whether the detected temperature is correct. When the detected temperature is lower than the set alarm value, the monitoring system will issue an alarm prompt.

[0003] Taking the shipyard's 8000TEU dual-fuel container ship as an example, a total of 8 pairs of temperature sensors need to be installed in the secondary insulation layer of the ship's membrane-type LNG fuel tank, see Figure 1 , Figure 1 This is a schematic diagram of the cable laying path of the secondary shielding layer temperature sensor of the membrane cabin. According to the existing cable laying and cabin penetration method, each cable is penetrated individually. This method is scattered and has a large number of openings, which is not conducive to construction and has certain risks. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a centralized laying device for temperature sensor cables of an LNG containment system to solve the problems in the above-mentioned background technology.

[0005] The purpose of the utility model is achieved in this way:

[0006] A centralized laying device for temperature sensor cables of an LNG containment system, comprising a membrane tank centralized penetration mechanism, the centralized penetration mechanism comprising a cryogenic mounting plate, a first penetration member, a second penetration member and an outer cover shell, the center of the cryogenic mounting plate is connected to one end of the first penetration member, the other end of the first penetration member is connected to one end of the second penetration member, and the other end of the second penetration member is connected to the outer cover shell via a connecting circular plate;

[0007] The low-temperature mounting plate is installed on the bulkhead of the membrane fuel tank, and the first penetration piece is in the shape of a hollow cylinder. One end of the first penetration piece penetrates the low-temperature mounting plate and then extends out of the bulkhead of the membrane fuel tank; the second penetration piece is in the shape of a horizontally placed hollow frustum of cone, and its smaller diameter opening end is connected to the first penetration piece, and its smaller diameter matches the diameter of the first penetration piece, and its larger diameter opening end is connected to the outer cover shell through a connecting circular plate, and its larger diameter matches the diameter of the outer cover shell; the outer cover shell includes an arc-shaped cylinder and an open plate, and the arc-shaped cylinder is a hollow cylinder with a mouth missing, and the inner wall of the arc-shaped cylinder is provided with a plurality of evenly distributed laying grooves, and an open plate is respectively provided at the left and right ends of the opening of the arc-shaped cylinder to facilitate the entry of cables.

[0008] Furthermore, the first cabin penetration member includes at least one hollow cylindrical stainless steel pipe, and connecting flanges are provided between two adjacent groups of stainless steel pipes.

[0009] Furthermore, a casting hole is provided on the first cabin penetration member, and a matching bolt is arranged in the casting hole.

[0010] Furthermore, the connecting circular plate is provided with a plurality of through holes evenly distributed along the circumference for cables to pass through.

[0011] Furthermore, a stuffing box seal is provided at the through hole of the connecting circular plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a centralized laying device for temperature sensor cables of an LNG containment system, which adopts a centralized penetration part for cable laying, introduces the temperature sensor cable through an outer cover shell, arranges it in order through laying grooves, and then passes through the through hole of a connecting circular plate to enter a second penetration part, enters the first penetration part after the second penetration part is closed, and penetrates the cabin through the first penetration part; the utility model has a simple structure but an ingenious design, is relatively simple to manufacture and install, and has a low cost, which not only meets the requirements of classification society regulations and GTT, but also can effectively save labor costs, ensure the stability and operability of equipment operation, and will not be affected by external environmental factors, has a long service life, and reduces the difficulty of later maintenance by crew members. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cable laying path of the existing membrane cabin secondary shielding layer temperature sensor.

[0015] Figure 2 It is a structural schematic diagram of the centralized cabin penetration component of the utility model.

[0016] Figure 3 for Figure 2 AA cross-section diagram of .

[0017] Figure 4 for Figure 2 Schematic diagram of the BB cross section.

[0018] in:

[0019] Low temperature installation plate 1, first cabin penetration part 2, second cabin penetration part 3, outer cover shell 4, arc tube 41, laying groove 42, open plate 43, connecting flange 5, connecting circular plate 6, through hole 61, matching bolts 7, stuffing box 8. DETAILED DESCRIPTION

[0020] In order to better understand the technical solution of the present invention, the following will be described in detail in conjunction with the relevant illustrations. It should be understood that the following specific embodiments are not intended to limit the specific implementation of the technical solution of the present invention, and are only implementations that can be adopted by the technical solution of the present invention. It should be noted that the description of the positional relationship of each component in this article, such as component A being located above component B, is based on the description of the relative positions of the components in the illustration, and is not intended to limit the actual positional relationship of the components. Example 1

[0021] See also Figure 2-Figure 4 , Figure 2 The structural schematic diagram of the utility model is drawn. As shown in the figure, the utility model relates to a centralized laying device for temperature sensor cables of an LNG containment system, which includes a centralized penetration mechanism for a membrane tank, and the centralized penetration mechanism includes a low-temperature installation plate 1, a first penetration member 2, a second penetration member 3 and an outer cover shell 4, the center of the low-temperature installation plate 1 is connected to one end of the first penetration member 2, the other end of the first penetration member 2 is connected to one end of the second penetration member 3, and the other end of the second penetration member 3 is connected to the outer cover shell 4 through a connecting circular plate 6.

[0022] The low-temperature mounting plate 1 is installed on the bulkhead of the membrane fuel tank, and the first penetration member 2 is hollow cylindrical. One end of the first penetration member 2 penetrates the low-temperature mounting plate 1 and extends out of the bulkhead of the membrane fuel tank; the first penetration member 2 includes at least one hollow cylindrical stainless steel pipe, and a connecting flange 5 is arranged between two adjacent groups of stainless steel pipes; a casting hole is also provided on the first penetration member 2, and a matching bolt 7 is arranged in the casting hole.

[0023] The thickness of the low-temperature installation plate 1 is 15 mm, and the thickness of the first cabin penetration member 2 is 2.77 mm.

[0024] The second cabin penetration member 3 is in the shape of a horizontally placed hollow frustum of a cone, with its smaller diameter opening end connected to the first cabin penetration member 2, and its smaller diameter matches the diameter of the first cabin penetration member 2, and its larger diameter opening end is connected to the outer cover shell 4 through a connecting circular plate 6, and its larger diameter matches the diameter of the outer cover shell 4; the thickness of the second cabin penetration member 3 is 3 mm.

[0025] The connecting circular plate 6 is provided with 8 through holes 61 evenly distributed along the circumference for the cables to pass through, and a stuffing box 8 is provided for sealing; the thickness of the connecting circular plate 6 is 6 mm.

[0026] The outer cover shell 4 includes an arc-shaped cylinder 41 and an open plate 43. The arc-shaped cylinder 41 is a hollow cylinder with a missing mouth. The inner wall of the arc-shaped cylinder 41 is provided with 8 evenly distributed laying grooves 42 for clamping cables. An open plate 43 is respectively provided at the left and right ends of the opening of the arc-shaped cylinder 41 to facilitate the entry of cables. The thickness of the outer cover shell 4 is 1.5 mm.

[0027] Working principle:

[0028] The utility model provides a centralized laying device for temperature sensor cables of an LNG containment system, which adopts a centralized cabin penetration piece for cable laying; the temperature sensor cable is laid in the middle gap of the secondary shielding layer, and the cable must be laid in the gap position of the planks in the path from the cable laying to the cabin penetration piece of the membrane cabin, and cannot be pressed under the planks. The gap position is filled and fixed with a flat lace, and the top of the groove is sealed with a cable tape, and a height difference of 100 mm must be maintained between the top of the cable laying and the top surface of the shielding layer.

[0029] The improved membrane cabin penetration piece of the utility model concentrates the cables of all temperature sensors of the secondary shielding layer at one place and passes them out of the cabin, avoiding the occurrence of multiple openings on the membrane cabin, greatly reducing the occurrence of airtightness problems in the later stage, and at the same time, the penetration piece also effectively reduces the difficulty of on-site construction.

[0030] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A centralized laying device for temperature sensor cables of an LNG containment system, characterized in that: It comprises a membrane cabin centralized cabin penetration mechanism, the centralized cabin penetration mechanism comprising a low-temperature installation plate (1), a first cabin penetration member (2), a second cabin penetration member (3) and an outer cover shell (4), the center of the low-temperature installation plate (1) is connected to one end of the first cabin penetration member (2), the other end of the first cabin penetration member (2) is connected to one end of the second cabin penetration member (3), and the other end of the second cabin penetration member (3) is connected to the outer cover shell (4) via a connecting circular plate (6); The low-temperature installation plate (1) is installed on the bulkhead of the membrane fuel tank, the first penetration member (2) is in the shape of a hollow cylinder, one end of the first penetration member (2) penetrates the low-temperature installation plate (1) and then extends out of the bulkhead of the membrane fuel tank; the second penetration member (3) is in the shape of a horizontally placed hollow truncated cone, the smaller diameter opening end of which is connected to the first penetration member (2), the smaller diameter of which matches the diameter of the first penetration member (2), and the larger diameter of which is connected to the outer cover shell (4) through a connecting circular plate (6), the larger diameter of which matches the diameter of the outer cover shell (4); the outer cover shell (4) comprises an arc-shaped cylinder (41) and an open plate (43), the arc-shaped cylinder (41) is a hollow cylinder with a missing opening, the inner wall of the arc-shaped cylinder (41) is provided with a plurality of evenly distributed laying grooves (42), and the left and right ends of the opening of the arc-shaped cylinder (41) are respectively provided with an open plate (43) to facilitate the entry of cables.

2. The centralized laying device for temperature sensor cables of an LNG containment system according to claim 1 is characterized in that: The first cabin penetration member (2) comprises at least one hollow cylindrical stainless steel pipe, and connecting flanges (5) are arranged between two adjacent groups of stainless steel pipes.

3. The centralized laying device for temperature sensor cables of an LNG containment system according to claim 2 is characterized in that: The first cabin penetration member (2) is also provided with a casting hole, in which a matching bolt (7) is arranged.

4. The centralized laying device for temperature sensor cables of an LNG containment system according to claim 1, characterized in that: The connecting circular plate (6) is provided with a plurality of through holes (61) evenly distributed along the circumference for cables to pass through.

5. The centralized laying device for temperature sensor cables of an LNG containment system according to claim 4, characterized in that: A stuffing box (8) is provided at the through hole (61) of the connecting circular plate (6) for sealing.

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