Overhaul platform device for supercharged air cooler of high-power low-speed diesel engine

Abstract

The invention belongs to the technical field of maintenance of supercharged air coolers of low-speed diesel engines, and particularly relates to a maintenance platform device for a supercharged air cooler of a high-power low-speed diesel engine. The flat walking board support set is fixed to the exhaust side panel of the diesel engine rack and the supercharging air cooler shell through bolts, the hanging ladder support is combined to be connected with the cabin platform, the design that the walking board supports and the reinforcing connecting pieces are combined is adopted, vibration is buffered through the cooperation of the elastic washers, the detachable walking board floor and the handrail, and rapid assembly and disassembly are facilitated; the movable hanging ladder support supports butt joint of cabin platforms with different heights. The space adaptability is good, and the problem that a traditional fixed platform device cannot be installed in a narrow space is solved. And the high-altitude operation risk is reduced, and convenience and safety are high. The construction period and cost are reduced, the maintenance cost is optimized, the maintenance period of the supercharged air cooler is prolonged, and the operation reliability of a diesel engine is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of maintenance of a low-speed diesel engine supercharged air cooler, and in particular relates to a maintenance platform device for a high-power low-speed diesel engine supercharged air cooler. Background Art

[0002] The present invention relates to the daily inspection and maintenance of a high-power low-speed engine supercharged air cooler. The supercharged air cooler is a tube-fin heat exchanger, and its working principle is: the high-temperature supercharged air flows through the heat sink, transfers the heat to the outer wall of the cooling tube by convection, and then transfers the heat to the inner wall of the tube by the heat conduction of the wall, and then the heat is taken away by the convection of the water in the tube to complete the heat exchange process. When the high-power low-speed engine is running, the supercharged air cooler needs to cool the temperature of the supercharged air output by the turbocharger from 170 to 210°C to 35 to 37°C. Therefore, the diesel engine supercharged air cooler is an important component of the low-speed diesel engine and is crucial to the normal operation of the high-power low-speed engine. The supercharged air cooler needs to be routinely inspected every day to measure the pressure drop and temperature drop of the scavenging air passing through the supercharged air cooler when the high-power low-speed engine is running. When the supercharged air cooler component is damaged, it needs to be disassembled and repaired. Therefore, a high-power low-speed engine supercharged air cooler inspection platform is designed.

[0003] The supercharged air cooler of a large low-speed marine diesel engine is usually arranged on the exhaust side of the diesel engine, above the explosion-proof door of the frame. The current ship engine room design generally adopts a compact layout for economic and space utilization considerations, resulting in a significant contraction of the bottom line of the engine room, a narrow gap between the engine base, the frame and the bulkhead, and densely placed equipment.

[0004] The maintenance of the supercharged air cooler with existing technology faces severe challenges: the traditional fixed platform cannot be installed due to space limitations, and the temporary maintenance facilities have problems such as poor stability and low safety. In addition, the supercharged air cooler needs to be monitored for pressure drop and temperature drop every day, and quickly disassembled and repaired when the components are damaged. The existing platforms and walkways in the engine room can hardly meet its maintenance needs. Although some ships have tried to increase the maintenance space through local modifications, such solutions are often costly and have limited effects due to the complexity of the diesel engine structure and the non-adjustability of the engine room equipment layout. Therefore, there is an urgent need for a maintenance platform device dedicated to the supercharged air cooler of a high-power, low-speed diesel engine, which can provide a safe and stable working environment in a small space, while taking into account disassembly and adaptability, so as to solve the problems of low maintenance efficiency and high risk in the existing technology. Summary of the invention

[0005] The present invention is to solve the problems of poor adaptability of the maintenance space of the prior art supercharged air cooler, poor structural stability, complex structure, low installation efficiency, high maintenance cost, unsafe high-altitude operation, etc., and proposes a high-power low-speed diesel engine supercharged air cooler maintenance platform device, including: a platform bracket group, which is composed of a first bracket, a second bracket, a third bracket, a fourth bracket, a fifth bracket and a sixth bracket, wherein the first bracket and the second bracket are fixedly arranged on the surface of the supercharged air cooler shell in parallel with each other, and the third bracket and the fourth bracket are fixedly arranged on the exhaust side panel of the diesel engine frame in parallel with each other; the fifth bracket is transversely connected to the third bracket and the fourth bracket to enhance the structural strength; the sixth bracket is a movable hanging ladder bracket, which is used to install a portable hanging ladder;

[0006] A fixing assembly, including a plurality of bolts and matching elastic washers, is used to fasten the platform bracket assembly to the exhaust side panel of the diesel engine frame and the supercharged air cooler housing;

[0007] The working platform assembly includes a platform floor, a floor railing and a railing column. The platform floor is fixed on the top of the platform bracket group by bolts. The floor railing and the railing column are perpendicular to each other and connected to the edge of the platform floor to form a protective structure.

[0008] The overall size of the maintenance platform device is customized according to the diesel engine cabin space, and the ladder interface of the sixth bracket is adapted to cabin platforms of different heights to achieve flexible docking of the maintenance platform device with the diesel engine cabin passage.

[0009] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the platform bracket group is made of high-strength alloy steel and the surface is coated with an anti-rust coating.

[0010] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the ladder interface of the sixth bracket is an articulated structure, and the inclination angle of the portable ladder can be adjusted.

[0011] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the platform floor is a gridded steel plate with anti-slip patterns on the edges.

[0012] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the bolts are high-strength stainless steel bolts, and the elastic washers are disc spring washers.

[0013] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the height of the floor railing is 1.2 meters, and the distance between the railing columns does not exceed 1.5 meters.

[0014] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the fifth bracket is an X-shaped cross-support structure, and its two ends are fixed to the third bracket and the fourth bracket by welding.

[0015] According to the above-mentioned high-power low-speed diesel engine supercharger air cooler maintenance platform device, the platform can adapt to the installation requirements of the 6G50ME-C model diesel engine.

[0016] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, the platform support group is an I-shaped steel frame.

[0017] According to the above-mentioned high-power low-speed diesel engine supercharged air cooler maintenance platform device, a tool storage groove is provided under the platform floor for storing maintenance tools.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The platform bracket assembly of the present invention is fixed to the exhaust side panel of the diesel engine frame and the supercharged air cooler housing by bolts, and is connected to the cabin platform in combination with the ladder bracket. It has good spatial adaptability and makes full use of the narrow space around the diesel engine without occupying additional cabin equipment layout area, thus solving the problem that the traditional fixed platform device cannot be installed.

[0020] 2. The present invention adopts a combination design of multiple sets of platform brackets and reinforced connectors, and cooperates with elastic washers to buffer vibration. The structure has high stability, ensuring the stability of the platform when the diesel engine is running, and avoiding displacement or deformation caused by mechanical vibration.

[0021] 3. The detachable platform floor and railing of the present invention are convenient for quick assembly and disassembly; the movable ladder bracket supports the docking of cabin platforms at different heights, reducing the risk of high-altitude operations and providing high convenience and safety.

[0022] 4. The platform device of the present invention is installed as a whole with the diesel engine, and there is no need to modify the cabin structure later, which greatly reduces the construction period and cost, optimizes the maintenance cost, and at the same time extends the maintenance period of the supercharger air cooler, thereby improving the operating reliability of the diesel engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of a structural schematic diagram of a high-power low-speed diesel engine supercharger air cooler maintenance platform device of the present invention.

[0024] Figure 2 The utility model is a schematic diagram of the installation position of a high-power low-speed diesel engine supercharged air cooler maintenance platform device of the present invention.

[0025] Figure 3It is a partial schematic diagram of the DD direction of the top view of the structural schematic diagram of a high-power low-speed diesel engine supercharger air cooler maintenance platform device of the present invention.

[0026] Figure 4 It is a partial schematic diagram of the EE direction of a top view of the structural schematic diagram of a high-power low-speed diesel engine supercharged air cooler maintenance platform device of the present invention.

[0027] Figure 5 It is a rear view of a structural schematic diagram of a high-power low-speed diesel engine supercharger air cooler maintenance platform device of the present invention.

[0028] In the figure: 1-first bracket, 2-second bracket, 3-third bracket, 4-fourth bracket, 5-fifth bracket, 6-sixth bracket, 7, 9, 13-bolts, 8, 10, 14-elastic washers, 11-walkway floor, 12-floor railing, 15-railing column, 100-supercharged air cooler housing, 200-diesel engine frame exhaust side panel. DETAILED DESCRIPTION

[0029] Preferred Embodiments

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] like Figures 1 to 5 As shown: In this embodiment, a high-power low-speed diesel engine supercharged air cooler maintenance platform device includes: a platform bracket group, which is composed of a first bracket 1, a second bracket 2, a third bracket 3, a fourth bracket 4, a fifth bracket 5 and a sixth bracket 6, wherein the first bracket 1 and the second bracket 2 are fixedly arranged on the surface of the supercharged air cooler housing 100 in parallel with each other, and the third bracket 3 and the fourth bracket 4 are fixedly arranged on the exhaust side panel 200 of the diesel engine frame in parallel with each other; the fifth bracket 5 is horizontally connected to the third bracket 3 and the fourth bracket 4 to enhance the structural strength; the sixth bracket 6 is a movable hanging ladder bracket for installing a portable hanging ladder;

[0032] The fixing assembly includes a plurality of bolts 7, 9, 13 and matching elastic washers 8, 10, 14, which are used to fasten the platform support assembly with the exhaust side panel 200 of the diesel engine frame and the supercharged air cooler housing 100;

[0033] The working platform assembly includes a platform floor 11, a floor railing 12 and a railing column 15. The platform floor 11 is fixed to the top of the platform bracket assembly by bolts 13. The floor railing 12 and the railing column 15 are perpendicular to each other and connected to the edge of the platform floor 11 to form a protective structure.

[0034] The overall size of the maintenance platform device is customized according to the diesel engine cabin space, and the ladder interface of the sixth bracket 6 is adapted to cabin platforms of different heights to achieve flexible docking of the maintenance platform device with the diesel engine cabin passage.

[0035] The platform bracket assembly is made of high-strength alloy steel and the surface is coated with anti-rust coating.

[0036] The ladder interface of the sixth bracket 6 is an articulated structure, and the inclination angle of the portable ladder can be adjusted. The platform floor 11 is a grid steel plate, and the edge is provided with anti-skid lines.

[0037] Bolts 7, 9, and 13 are high-strength stainless steel bolts, and elastic washers 8, 10, and 14 are disc spring washers. The height of the floor railing 12 is 1.2 meters, and the distance between the railing posts 15 does not exceed 1.5 meters. The fifth bracket 5 is an X-shaped cross support structure, and its two ends are fixed to the third bracket 3 and the fourth bracket 4 by welding. The platform device can adapt to the installation requirements of the 6G50ME-C diesel engine. The walkway bracket group is an I-shaped steel frame. A tool storage slot is provided under the walkway floor 11 for storing maintenance tools.

[0038] The installation steps of a high-power low-speed diesel engine supercharger air cooler maintenance platform device of this embodiment are as follows:

[0039] First, the overall size of the maintenance platform is determined based on the cabin space parameters of the target diesel engine model. The length, spacing and installation position of the platform brackets 1-6 must accurately match the bolt hole positions of the diesel engine frame exhaust side panel 200 and the supercharged air cooler housing 100. Use 3D modeling software to simulate the installation process to ensure that there is no spatial interference between the components.

[0040] Then, the brackets are installed and fixed: the first bracket 1 and the second bracket 2 are fixed to the preset mounting seats on both sides of the supercharged air cooler housing 100 by bolts 7, 9 and elastic washers 8, 10;

[0041] The third bracket 3 and the fourth bracket 4 are vertically mounted on the reserved holes of the exhaust side panel 200 of the diesel engine frame through bolt assemblies of the same specifications;

[0042] The fifth bracket 5 adopts an X-shaped cross structure, and its two ends are welded to the middle of the third bracket 3 and the fourth bracket 4 to enhance the overall rigidity;

[0043] The sixth bracket 6 is installed on the edge of the platform, with its ladder interface facing the direction of the cabin platform, and the ladder angle is adjusted by the hinge axis.

[0044] Next, assemble the work platform: lay the mesh steel plate of the platform floor 11 flat on the top of the platform bracket assembly and fix it with bolts 13 and elastic washers 14;

[0045] Vertically welded railing posts 15 around the platform floor 11, with a spacing of 1.5 meters and a height of 1.2 meters;

[0046] The floor railing 12 is horizontally welded to the top of the railing column 15 to form a continuous guardrail.

[0047] Connect and debug the ladder again, select a portable ladder that matches the height of the cabin platform, and hang its upper end on the hinged interface of the sixth bracket 6;

[0048] Adjust the ladder's inclination angle to 30°-45° to ensure that the steps are firmly in contact with the platform;

[0049] Install an anti-drop lock at the connection between the ladder and the platform, and carry out a load-bearing test with a load ≥ 200kg.

[0050] Finally, function verification and optimization are carried out: the maintenance personnel's movements of going up and down the platform are simulated to check the stability of the floor railing 12 and the platform floor 11;

[0051] Start the diesel engine to rated power, observe the displacement of the platform under vibration, and optimize the tightening effect by increasing the number of elastic washers or adjusting the bolt torque when necessary;

[0052] A tool storage slot is installed under the platform floor 11 to improve the convenience of operation.

[0053] Taking the 6G50ME-C diesel engine carried by bulk carriers as an example, after installing the maintenance platform according to the above steps, the maximum amplitude of the platform when running at full load is measured to be less than 0.5mm, the ladder can bear a load of 250kg without deformation, the maintenance efficiency is improved by 40%, and there is no spatial interference problem. It only takes 2 hours to dismantle the platform, which is significantly better than the 3-day transformation cycle of the traditional welded structure.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-power low-speed diesel engine supercharged air cooler maintenance platform device, characterized in that: include: A platform bracket group is composed of a first bracket (1), a second bracket (2), a third bracket (3), a fourth bracket (4), a fifth bracket (5) and a sixth bracket (6), wherein the first bracket (1) and the second bracket (2) are fixedly arranged parallel to each other on the surface of a supercharged air cooler housing (100), and the third bracket (3) and the fourth bracket (4) are fixedly arranged parallel to each other on an exhaust side panel (200) of a diesel engine frame; the fifth bracket (5) is transversely connected to the third bracket (3) and the fourth bracket (4) to enhance structural strength; and the sixth bracket (6) is a movable hanging ladder bracket for installing a portable hanging ladder; A fixing assembly, comprising a plurality of sets of bolts (7, 9, 13) and matching elastic washers (8, 10, 14), used for fastening and connecting the platform bracket assembly with the exhaust side panel (200) of the diesel engine frame and the supercharged air cooler housing (100); The working platform assembly comprises a walkway floor (11), a floor railing (12) and a railing column (15), wherein the walkway floor (11) is fixedly arranged on the top of the walkway bracket assembly by bolts (13), and the floor railing (12) and the railing column (15) are perpendicular to each other and connected to the edge of the walkway floor (11) to form a protective structure; The overall size of the maintenance platform device is customized according to the diesel engine cabin space, and the ladder interface of the sixth bracket (6) is adapted to cabin platforms of different heights, thereby realizing flexible docking of the maintenance platform device with the diesel engine cabin passage.

2. A high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1, characterized in that: The platform bracket assembly is made of high-strength alloy steel and is coated with an anti-rust coating on the surface.

3. A high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1, characterized in that: The ladder interface of the sixth bracket (6) is an articulated structure, and the inclination angle of the portable ladder can be adjusted.

4. A high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1, characterized in that: The walkway floor (11) is a gridded steel plate, and anti-slip patterns are arranged on the edges.

5. The high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1 is characterized by: The bolts (7, 9, 13) are high-strength stainless steel bolts, and the elastic washers (8, 10, 14) are disc spring washers.

6. A high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1, characterized in that: The floor railing (12) has a height of 1.2 meters, and the distance between railing posts (15) does not exceed 1.5 meters.

7. The high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1 is characterized by: The fifth bracket (5) is an X-shaped cross-bracing structure, with two ends fixed to the third bracket (3) and the fourth bracket (4) by welding.

8. The high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1 is characterized by: The platform can adapt to the installation requirements of the 6G50ME-C model diesel engine.

9. The high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1 is characterized by: The walkway support assembly is an I-shaped steel frame.

10. The high-power low-speed diesel engine supercharged air cooler maintenance platform device according to claim 1, characterized in that: A tool storage groove is provided below the platform floor (11) for storing maintenance tools.

Images