Heat dissipation reinforced combined type drip tray structure

Abstract

The invention provides a heat dissipation reinforced combined drip tray structure which is suitable for a B-type independent liquid tank and comprises a drip tray body 1 and a drip tray supporting structure 2. The drip tray body 1 is made of an aluminum alloy material of which the thermal conductivity is higher than 100W / (m.K); the drip tray supporting structure 2 is made of a stainless steel material of which the thermal conductivity is lower than 20W / (m.K); the drip tray body 1 is fixed to the drip tray supporting structure 2 in a bolt connection mode, and the heat insulation gasket 3 is arranged at the connecting position. A plurality of radiating fins 4 are respectively arranged on the surfaces of the drip tray top plate 11 and the drip tray bottom plate 12 of the drip tray body 1; and an insulating layer 6 is arranged between the bottom of the drip tray supporting structure 2 and the ship body inner bottom plate 5. According to the technical scheme, efficient heat dissipation and cold energy blocking of the drip tray structure can be achieved, the volume requirement of the drip tray is reduced, the use amount of low-temperature steel of a ship body structure is reduced, and economical efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship liquid tank structure design, and particularly relates to a heat dissipation enhanced combined drip tray structure. Background Art

[0002] The drip tray is the secondary bulkhead of the B-type independent liquid tank. Since the interior of the drip tray needs to hold low-temperature liquid, its own temperature and the surrounding temperature are extremely low. Since the drip tray is ultimately connected to the inner bottom structure of the ship, if not considered properly, it will lead to an increase in the steel grade of the nearby ship hull structure, and even special low-temperature steel needs to be used, increasing the economic cost.

[0003] For the drip tray structure, the evaporation and diffusion of the low-temperature liquid leaking into the drip tray should be increased as much as possible, while for the inner bottom structure of the ship, the cold energy transferred from the drip tray to the hull structure should be fully blocked. At present, most drip trays are semi-cavity designs made of a uniform material, and their volume is determined according to the liquid leakage rate. To prevent the liquid in the drip tray from evaporating untimely, the volume of the drip tray is usually redundantly increased. Often, there is a lack of space at the bottom of the B-type independent liquid tank, and it is difficult to arrange the drip tray and the liquid tank base.

[0004] Therefore, how to provide a heat dissipation enhanced combined drip tray structure that can both efficiently dissipate heat and block cold energy of the drip tray structure, reduce the volume requirement of the drip tray, and reduce the consumption of low-temperature steel for the hull structure has become an urgent technical problem to be solved. Summary of the Invention

[0005] The embodiment of the present invention provides a heat dissipation enhanced combined drip tray structure that can both efficiently dissipate heat and block cold energy of the drip tray structure, reduce the volume requirement of the drip tray, reduce the consumption of low-temperature steel for the hull structure, and improve the economy.

[0006] In the embodiment of the present invention, a heat dissipation enhanced combined drip tray structure applicable to a B-type independent liquid tank is provided, including: a drip tray body 1 and a drip tray support structure 2;

[0007] The drip tray body 1 is made of an aluminum alloy material with a thermal conductivity higher than 100 W / (m·K);

[0008] The drip tray support structure 2 is made of a stainless steel material with a thermal conductivity lower than 20 W / (m·K);

[0009] The drip tray body 1 is fixed to the drip tray support structure 2 by a bolt connection method, and an adiabatic gasket 3 is provided at the connection;

[0010] A plurality of heat dissipation fins 4 are respectively arranged on the surfaces of the drip tray top plate 11 and the drip tray bottom plate 12 of the drip tray body 1;

[0011] An insulating layer 6 is provided between the bottom of the drip tray support structure 2 and the inner bottom plate 5 of the hull.

[0012] Furthermore, the heat dissipation fins 4 are arranged in an array. The height of a single heat dissipation fin 4 is 10 mm - 50 mm, the thickness is 2 mm - 8 mm, and the fin pitch is 1.5 to 3 times the height of the fin.

[0013] Furthermore, a plurality of convection enhancement holes 41 are provided on the surface of the heat dissipation fins 4. The aperture of the convection enhancement holes 41 is 3 mm - 10 mm, and the hole pitch is 2 to 5 times the aperture.

[0014] Furthermore, the heat insulation gasket 3 is made of an epoxy resin composite material, with a thickness of 5 mm - 15 mm and a Shore hardness of 70D - 90D.

[0015] Furthermore, the drip tray support structure 2 includes: a support panel 21, vertical stiffeners 22, and a horizontal connecting plate 23;

[0016] The support panel 21 is arranged parallel to the bottom surface of the drip tray body 1;

[0017] The vertical stiffeners 22 are arranged at intervals along the length direction of the drip tray support panel 21;

[0018] The horizontal connecting plate 23 is fixedly welded to the inner bottom plate 5 of the hull.

[0019] Furthermore, the spacing of the vertical stiffeners 22 is 200 mm - 500 mm, the height is 1 / 5 to 1 / 3 of the width of the support panel, and the thickness is 5 mm - 15 mm.

[0020] Furthermore, the insulating layer 6 is a polyurethane foam material, with a thickness of 20 mm - 50 mm and a thermal conductivity less than 0.03 W / (m·K).

[0021] Furthermore, a fillet transition is adopted between the top plate 11 and the side plate 13 of the drip tray body 1, and the fillet radius is 2 to 4 times the plate thickness.

[0022] Furthermore, the welded joint 24 between the support structure 2 and the inner bottom plate 5 of the hull adopts an intermittent welding form, the weld length is 50 mm - 100 mm, and the weld spacing is 2 to 3 times the weld length.

[0023] Furthermore, the volume design of the drip tray body 1 satisfies V = Q × t × k, where Q is the leakage rate, t is the emergency treatment time, and k is the volume coefficient with a value of 0.6 - 0.8.

[0024] The beneficial effects brought by the present invention are as follows:

[0025] As can be seen from the above solution, the embodiment of the present invention provides a heat dissipation enhanced combined drip tray structure applicable to a Type B independent liquid tank, including: a drip tray body 1 and a drip tray support structure 2; the drip tray body 1 is made of an aluminum alloy material with a thermal conductivity higher than 100 W / (m·K); the drip tray support structure 2 is made of a stainless steel material with a thermal conductivity lower than 20 W / (m·K); the drip tray body 1 is fixed to the drip tray support structure 2 by a bolt connection method, and a heat insulation gasket 3 is provided at the connection; a plurality of heat dissipation fins 4 are respectively arranged on the surfaces of the drip tray top plate 11 and the drip tray bottom plate of the drip tray body 1; an insulating layer 6 is arranged between the bottom of the drip tray support structure 2 and the inner bottom plate 5 of the ship. The technical solution of the present invention can combine the high-efficiency heat dissipation and cold energy barrier of the drip tray structure, reduce the volume requirement of the drip tray, reduce the amount of low-temperature steel used in the hull structure, and improve the economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic diagram of a heat dissipation enhanced combined drip tray structure according to an embodiment of the present invention;

[0027] In the figure, 1 is the drip tray body, 11 is the drip tray top plate, 2 is the drip tray support structure, 3 is the heat insulation gasket, 4 is the heat dissipation fin, 5 is the inner bottom plate of the ship, and 6 is the insulating layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] As Figure 1 shown, Figure 1 FIG. is a schematic diagram of a heat dissipation enhanced combined drip tray structure according to an embodiment of the present invention.

[0030] In the figure, a heat dissipation enhanced combined drip tray structure applicable to a Type B independent liquid tank includes: a drip tray body 1 and a drip tray support structure 2;

[0031] The drip tray body 1 is made of an aluminum alloy material with a thermal conductivity higher than 100 W / (m·K);

[0032] The drip tray support structure 2 is made of a stainless steel material with a thermal conductivity lower than 20 W / (m·K);

[0033] The drip tray body 1 is fixed to the drip tray support structure 2 by a bolt connection method, and a heat insulation gasket 3 is provided at the connection;

[0034] A plurality of heat dissipation fins 4 are respectively arranged on the surfaces of the drip tray top plate 11 and the drip tray bottom plate 12 of the drip tray body 1;

[0035] An insulating layer 6 is arranged between the bottom of the drip tray support structure 2 and the inner bottom plate 5 of the ship's hull.

[0036] In the embodiment of the present invention, the drip tray body 1 is made of aluminum alloy (such as 5083 aluminum alloy) with a thermal conductivity > 100 W / (m·K) to accelerate the evaporation of cryogenic liquid; the support structure 2 is made of stainless steel (such as 304 stainless steel) with a thermal conductivity < 20 W / (m·K) to delay the transfer of cold energy; bolt connection + insulating gasket can block the heat conduction path at the connection; the heat dissipation fins 4 are distributed on the top plate 11 and the bottom plate 12 to further enhance convective heat dissipation; the insulating layer 6 is arranged between the support structure 2 and the inner bottom plate 5 of the ship's hull to further block cold energy.

[0037] Among them, the high - thermal - conductivity aluminum alloy body accelerates the evaporation of the liquid, and the low - thermal - conductivity stainless steel support structure reduces the transfer of cold energy. The two work together to solve the contradiction between evaporation efficiency and cold energy blocking. The insulating gasket 3 and the insulating layer 6 form a double barrier, which can reduce the risk of temperature drop of the ship's hull structure and reduce the consumption of low - temperature steel. The heat dissipation fin design further improves the evaporation rate by increasing the heat dissipation surface area and reduces the requirement for the drip tray volume.

[0038] In one embodiment of the present invention, the heat dissipation fins 4 are arranged in an array. The height of a single heat dissipation fin 4 is 10 mm - 50 mm, the thickness is 2 mm - 8 mm, and the fin pitch is 1.5 times to 3 times the fin height.

[0039] Among them, the heat dissipation area and the air flow channel design are optimized. If the pitch is too small (< 1.5 times), it will hinder air flow; if it is too large (> 3 times), it will reduce the heat dissipation efficiency. This design balances heat dissipation and space utilization rate. To adapt to the vibration environment of the ship, a thickness of 2 mm - 8 mm is adopted to ensure the structural strength of the fins and avoid fracture.

[0040] In one embodiment of the present invention, a plurality of convective enhancement holes 41 are formed on the surface of the heat dissipation fins 4. The aperture of the convective enhancement holes 41 is 3 mm - 10 mm, and the hole pitch is 2 times to 5 times the aperture. Among them, setting the hole pitch to be 2 times to 5 times the aperture can avoid overly weakening the thickness of the heat dissipation fins 4.

[0041] In another embodiment of the present invention, the insulating gasket 3 is made of epoxy resin composite material, with a thickness of 5 mm - 15 mm and a Shore hardness of 70D - 90D.

[0042] In another embodiment of the present invention, the support structure 2 includes: a support panel 21, vertical stiffeners 22 and horizontal connection plates 23;

[0043] The support panel 21 is arranged parallel to the bottom surface of the drip tray body 1;

[0044] The vertical reinforcing ribs 22 are arranged at intervals along the length direction of the support panel 21 of the drip tray;

[0045] The horizontal connecting plate 23 is fixedly welded to the inner bottom plate 5 of the ship's hull.

[0046] Among them, the modular design of the support structure 2 and the spaced arrangement of the vertical reinforcing ribs 22 can reduce the weight and improve the bending stiffness; the horizontal connecting plate 23 is welded to the inner bottom plate 5 of the ship's hull, which can prevent the displacement of the support structure.

[0047] In another embodiment of the present invention, the spacing of the vertical reinforcing ribs 22 is 200 mm to 500 mm, the height is 1 / 5 to 1 / 3 of the width of the support panel, and the thickness is 5 mm to 15 mm.

[0048] Among them, the vertical reinforcing ribs 22 adopt a uniform load distribution. If the spacing is <200 mm, it will cause material waste, while if the spacing is >500 mm, the support strength will be reduced. The thickness of 5 mm to 15 mm matches the vibration frequency of the ship's liquid tank to avoid resonance.

[0049] In another embodiment of the present invention, the insulating layer 6 is made of polyurethane foam material, with a thickness of 20 mm to 50 mm and a thermal conductivity less than 0.03 W / (m·K).

[0050] In another embodiment of the present invention, a fillet transition is adopted between the top plate 11 and the side plate 13 of the drip tray body 1, and the fillet radius is 2 to 4 times the plate thickness. Among them, the fillet transition reduces the stress at the weld and extends the fatigue life; in addition, the fillet guides the liquid flow to the center of the drip tray to avoid liquid accumulation at the edge.

[0051] In another embodiment of the present invention, the welded joint 24 between the support structure 2 and the inner bottom plate 5 of the ship's hull adopts an intermittent welding form, the weld length is 50 mm to 100 mm, and the weld spacing is 2 to 3 times the weld length.

[0052] In another embodiment of the present invention, the volume design of the drip tray body 1 satisfies V = Q × t × k, where Q is the leakage rate, t is the emergency treatment time, and k is the volume coefficient, taking 0.6 - 0.8. Compared with the traditional design where k ≥ 1, the technical solution of the present invention reduces k to 0.6 - 0.8 through the improvement of the heat dissipation efficiency, which can save 30% - 40% of the space.

[0053] In one embodiment of the present invention, the drip tray body (1) is made of 5083 aluminum alloy (thermal conductivity 121 W / (m·K)), and the support structure (2) is made of 304 stainless steel (thermal conductivity 16.2 W / (m·K));

[0054] The heat dissipation fins (4) have a height of 30 mm, a thickness of 5 mm, and a spacing of 60 mm, and reinforcing holes with a pore diameter of 5 mm and a hole spacing of 15 mm are provided on the surface;

[0055] The volume coefficient k = 0.7, reducing the volume by 30% compared with the traditional design, meeting the working condition requirement of a leakage rate of 0.1 m 3 / h.

[0056] The embodiment of the present invention provides a heat dissipation enhanced combined drip tray structure, which is applicable to a B-type independent liquid tank and includes: a drip tray body 1 and a drip tray support structure 2; the drip tray body 1 is made of an aluminum alloy material with a thermal conductivity higher than 100 W / (m·K); the drip tray support structure 2 is made of a stainless steel material with a thermal conductivity lower than 20 W / (m·K); the drip tray body 1 is fixed to the drip tray support structure 2 by a bolt connection method, and an adiabatic gasket 3 is provided at the connection; a plurality of heat dissipation fins 4 are respectively arranged on the surfaces of the drip tray top plate 11 and the drip tray bottom plate of the drip tray body 1; an insulating layer 6 is provided between the bottom of the drip tray support structure 2 and the inner bottom plate 5 of the ship's hull.

[0057] The technical solution of the present invention can combine the efficient heat dissipation and cold energy barrier of the drip tray structure, reduce the volume requirement of the drip tray, reduce the amount of low-temperature steel used in the hull structure, and improve the economy.

[0058] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A heat dissipation enhanced combined drip tray structure, suitable for type B independent liquid tank, characterized in that: The drip tray structure comprises: a drip tray body (1) and a drip tray supporting structure (2); The drip tray body (1) is made of an aluminum alloy material with a thermal conductivity higher than 100 W / (m·K); The drip tray support structure (2) is made of stainless steel with a thermal conductivity lower than 20 W / (m·K); The drip tray body (1) is fixed to the drip tray support structure (2) by bolt connection, and a heat insulating gasket (3) is provided at the connection point; The surfaces of the drip tray top plate (11) and the drip tray bottom plate (12) of the drip tray body (1) are respectively provided with a plurality of heat dissipation fins (4); An insulating layer (6) is provided between the bottom of the drip tray support structure (2) and the hull inner bottom plate (5).

2. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: The heat dissipation fins (4) are distributed in an array, the height of a single heat dissipation fin (4) is 10 mm to 50 mm, the thickness is 2 mm to 8 mm, and the fin spacing is 1.5 to 3 times the fin height.

3. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: A plurality of convection enhancement holes (41) are provided on the surface of the heat dissipation fin (4); the diameter of the convection enhancement holes (41) is 3 mm to 10 mm, and the hole spacing is 2 to 5 times the hole diameter.

4. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: The thermal insulation gasket (3) is made of epoxy resin composite material, has a thickness of 5 mm to 15 mm, and a Shore hardness of 70D to 90D.

5. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: The drip tray support structure (2) comprises: a support panel (21), vertical reinforcing ribs (22) and a horizontal connecting plate (23); The supporting panel (21) is arranged parallel to the bottom surface of the drip tray body (1); The vertical reinforcing ribs (22) are arranged at intervals along the length direction of the drip tray support panel (21); The horizontal connecting plate (23) is welded and fixed to the inner bottom plate (5) of the hull.

6. The heat dissipation enhanced combined drip tray structure according to claim 5, characterized in that: The vertical reinforcing ribs (22) have a spacing of 200 mm to 500 mm, a height of 1 / 5 to 1 / 3 of the width of the supporting panel, and a thickness of 5 mm to 15 mm.

7. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: The insulating layer (6) is made of polyurethane foam material, has a thickness of 20 mm to 50 mm, and a thermal conductivity coefficient of less than 0.03 W / (m·K).

8. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: A rounded transition is adopted between the top plate (11) and the side plate (13) of the drip tray body (1), and the rounded corner radius is 2 to 4 times the plate thickness.

9. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: The welding joint (24) between the support structure (2) and the hull inner bottom plate (5) is in the form of intermittent welding, the weld length is 50 mm to 100 mm, and the weld spacing is 2 to 3 times the weld length.

10. The heat dissipation enhanced combined drip tray structure according to claim 1, characterized in that: The volume design of the drip tray body (1) satisfies V=Q×t×k, wherein Q is the leakage rate, t is the emergency processing time, and k is the volume coefficient, which is 0.6-0.8.

Images