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

Abstract

The utility model 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 application belongs to the technical field of overhauling the supercharged air cooler of a low-speed diesel engine, and particularly relates to a high-power low-speed diesel engine supercharged air cooler overhauling platform device. BACKGROUND

[0002] The application relates to daily overhauling and maintenance of a high-power low-speed engine supercharged air cooler. The supercharged air cooler is a tube sheet heat exchanger, and its working principle is as follows: high-temperature supercharged air flows through the heat dissipation fins, heat is transferred to the outer wall of the cooling pipe through convection, then the heat is transferred to the inner wall of the pipe through the heat conduction of the wall, and then the heat is taken away by the convection of the water in the pipe to complete the heat exchange process. When the high-power low-speed engine is running, the supercharged air cooler needs to cool the supercharged air output by the turbocharger from 170-210 DEG C to 35-37 DEG C, so the diesel engine supercharged air cooler is an important part of the low-speed diesel engine and is crucial to the normal operation of the high-power low-speed engine. Daily routine inspection of the supercharged air cooler is required, and the pressure drop and temperature drop of the scavenging air through the supercharged air cooler during the operation of the high-power low-speed engine are measured. When the supercharged air cooler element is damaged, it needs to be disassembled and repaired. Therefore, a high-power low-speed engine supercharged air cooler overhauling 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 engine frame. At present, the ship engine room is generally designed in a compact layout for economy and space utilization, resulting in significant contraction of the bottom line of the engine room, narrow clearance between the engine bed, the engine frame and the bulkhead, and dense arrangement of equipment.

[0004] The overhauling of the supercharged air cooler of the prior art faces severe challenges: the traditional fixed platform cannot be installed due to space limitations, and the temporary overhauling facilities have poor stability and low safety. In addition, the supercharged air cooler needs to be monitored daily for pressure drop and temperature drop, and needs to be quickly disassembled and repaired when the element is damaged, and the existing platform and walkway in the engine room cannot meet the overhauling requirements. Although some ships try to increase the overhauling space by local modification, due to the complexity of the diesel engine structure and the unadjustability of the engine room equipment layout, such solutions are often costly and have limited effect. Therefore, a supercharged air cooler overhauling platform device specially used for high-power low-speed diesel engines is urgently needed, which can provide a safe and stable working environment in a narrow space, and also takes into account the detachability and adaptability, so as to solve the problems of low overhauling efficiency and high risk in the prior art. SUMMARY

[0005] The application provides a large-power low-speed diesel engine supercharged air cooler maintenance platform device to solve the problems of poor adaptability and structural stability, complex structure, low installation efficiency, high maintenance cost and unsafe high-altitude operation of a supercharged air cooler in the prior art.

[0006] The fixed assembly comprises a plurality of bolts and matched elastic washers and is used for fastening and connecting the walking platform support group with the diesel engine rack exhaust side panel and the supercharged air cooler shell.

[0007] The working platform assembly comprises a walking platform floor, a floor guardrail and a guardrail column, the walking platform floor is fixedly arranged on the top of the walking platform support group through bolts, the floor guardrail and the guardrail column are perpendicular to each other and are connected to the edges of the walking 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, the ladder interface of the sixth support is adapted to different-height cabin platforms, and flexible butt joint of the maintenance platform device and the diesel engine cabin channel is realized.

[0009] According to the large-power low-speed diesel engine supercharged air cooler maintenance platform device, the walking platform support group is made of high-strength alloy steel and is coated with a rust-proof coating on the surface.

[0010] According to the large-power low-speed diesel engine supercharged air cooler maintenance platform device, the ladder interface of the sixth support is of a hinged structure and can adjust the inclination angle of the portable ladder.

[0011] According to the large-power low-speed diesel engine supercharged air cooler maintenance platform device, the walking platform floor is a grid steel plate and is provided with anti-skid lines at the edges.

[0012] According to the large-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 large-power low-speed diesel engine supercharged air cooler maintenance platform device, the height of the floor guardrail is 1.2 m and the distance between the guardrail columns is not more than 1.5 m.

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

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

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

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

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

[0019] 1. The flat walking platform support group of the present application is fixed to the exhaust side panel of the diesel engine rack and the supercharged air cooler shell through bolts, and is connected to the engine room platform through the hanging ladder support, which has good space adaptability, fully utilizes the narrow space around the diesel engine, does not need to occupy the layout area of the engine room equipment additionally, and solves the problem that the traditional fixed platform device cannot be installed.

[0020] 2. The present application adopts a combination design of multiple walking platform supports and reinforcing connecting pieces, cooperates with elastic washers to buffer vibration, has high structural stability, ensures the stability of the platform during diesel engine operation, and avoids displacement or deformation caused by mechanical vibration.

[0021] 3. The detachable walking platform floor and the railing of the present application are convenient for quick assembly and disassembly; the movable hanging ladder support supports the docking of different height engine room platforms, reduces the risk of high-altitude operation, and has high convenience and safety.

[0022] 4. The platform device of the present application is installed integrally with the diesel engine, does not need to be retrofitted to the engine room structure, greatly reduces the construction period and cost, optimizes the maintenance cost, prolongs the maintenance period of the supercharged air cooler, and improves the operation reliability of the diesel engine. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a front view of a structure schematic diagram of a large power low-speed diesel engine supercharged air cooler maintenance platform device of the present application.

[0024] Figure 2 is an installation position schematic diagram of a large power low-speed diesel engine supercharged air cooler maintenance platform device of the present application.

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

[0026] Figure 4 This is a partial schematic diagram (EE direction) of the top view of a high-power low-speed diesel engine turbocharger air cooler maintenance platform device according to the present invention.

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

[0028] In the diagram: 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 post, 100-Burnover air cooler housing, 200-Diesel engine frame exhaust side panel. Detailed Implementation

[0029] Preferred Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] like Figures 1 to 5 As shown: In this embodiment, a maintenance platform device for a high-power low-speed diesel engine turbocharger air cooler includes: a platform support assembly, consisting of a first support 1, a second support 2, a third support 3, a fourth support 4, a fifth support 5, and a sixth support 6. The first support 1 and the second support 2 are fixedly and parallel to each other on the surface of the turbocharger air cooler housing 100, and the third support 3 and the fourth support 4 are fixedly and parallel to each other on the exhaust side panel 200 of the diesel engine frame. The fifth support 5 laterally connects the third support 3 and the fourth support 4 to enhance structural strength. The sixth support 6 is a movable ladder support for installing a portable ladder.

[0032] The fixing components include multiple sets of bolts 7, 9, 13 and matching elastic washers 8, 10, 14, which are used to fasten the walkway support assembly to the diesel engine frame exhaust side panel 200 and the turbocharger air cooler housing 100.

[0033] The work platform assembly includes a walkway floor 11, a floor railing 12, and railing posts 15. The walkway floor 11 is fixedly installed on the top of the walkway support assembly by bolts 13. The floor railing 12 and the railing posts 15 are perpendicular to each other and are connected to the edge of the walkway 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 hanging interface of the sixth support 6 is adapted to different height cabin platforms, so as to realize flexible docking of the maintenance platform device and the diesel engine cabin passage.

[0035] The walking platform support group is made of high-strength alloy steel material, and the surface is coated with a rust-proof coating.

[0036] The ladder hanging interface of the sixth support 6 is a hinged structure, which can adjust the inclination angle of the portable ladder. The walking platform floor 11 is a grid steel plate, and the edge is provided with anti-skid lines.

[0037] The bolts 7, 9 and 13 are high-strength stainless steel bolts, and the elastic washers 8, 10 and 14 are disc spring washers. The height of the floor railing 12 is 1.2 meters, and the spacing between the railing uprights 15 is not more than 1.5 meters. The fifth support 5 is an X-shaped cross support structure, and the two ends are fixed to the third support 3 and the fourth support 4 by welding. The platform device can adapt to the installation requirements of the 6G50ME-C diesel engine. The walking platform support group is an I-shaped steel frame. The tool storage groove is arranged below the walking platform floor 11 for storing maintenance tools.

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

[0039] Firstly, according to the cabin space parameters of the target diesel engine model, the overall size of the maintenance platform is determined. The length, spacing and installation position of the walking platform supports 1-6 need to be accurately matched with the bolt hole positions of the exhaust side panel 200 of the diesel engine frame and the supercharged air cooler shell 100. The installation process is simulated by using three-dimensional modeling software to ensure that there is no spatial interference between the components.

[0040] Then, the support installation and fixation are carried out: the first support 1 and the second support 2 are fixed on the pre-installed seats on both sides of the supercharged air cooler shell 100 by bolts 7, 9 and elastic washers 8, 10;

[0041] The third support 3 and the fourth support 4 are vertically installed on the pre-drilled hole positions of the exhaust side panel 200 of the diesel engine frame by the same specification bolt assembly;

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

[0043] The sixth support 6 is installed at the edge of the platform, and the ladder hanging interface is directed towards the cabin platform, and the ladder angle is adjusted by the hinge shaft.

[0044] Secondly, the working platform is assembled: the grid steel plate of the walking platform floor 11 is laid flat on the top of the walking platform support group, and is fixed by bolts 13 and elastic washers 14;

[0045] Vertical welding of the railing post 15 along the walkway floor 11, spacing 1.5 meters, height 1.2 meters;

[0046] Horizontal welding of the floor railing 12 on the top of the railing post 15 to form a continuous protective fence.

[0047] Again, the hanging ladder connection and debugging are carried out, a portable hanging ladder suitable for the height of the engine room platform is selected, and the upper end of the hanging ladder is connected to the hinged interface of the sixth support 6;

[0048] The inclination angle of the hanging ladder is adjusted to 30°-45° to ensure that the steps are in stable contact with the platform.

[0049] A anti-dropping lock is installed at the connection between the hanging ladder and the platform, and a load test is carried out, with a load of ≥200kg.

[0050] Finally, the function verification and optimization are carried out: simulate the actions of maintenance personnel going up and down the platform to check the stability of the floor railing 12 and the walkway floor 11.

[0051] Start the diesel engine to the rated power, observe the displacement of the platform in the vibration environment, and if necessary, optimize the fastening effect by increasing the number of elastic washers or adjusting the bolt torque.

[0052] Install a tool storage groove under the walkway floor 11 to improve the convenience of operation.

[0053] Taking the 6G50ME-C diesel engine carried by a bulk cargo ship as an example, after installing the maintenance platform according to the above steps, the maximum amplitude of the platform under full load is less than 0.5mm, the hanging ladder can bear 250kg without deformation, the maintenance efficiency is improved by 40%, and there is no space interference problem. The platform can be disassembled in only 2 hours, which is significantly better than the 3-day modification cycle of the traditional welded structure.

[0054] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A kind of high-power low-speed diesel engine supercharged air cooler overhaul platform device, it is characterized in that, The utility model relates to a kind of diesel engine maintenance platform device, including: Walkway support group is by first support (1), second support (2), third support (3), fourth support (4), fifth support (5) and sixth support (6) are formed, wherein the first support (1) and second support (2) are fixedly arranged on the surface of supercharged air cooler shell (100) mutually parallel, third support (3) and fourth support (4) are fixedly arranged on the exhaust side panel (200) of diesel engine frame mutually parallel;Fifth support (5) is transversely connected third support (3) and fourth support (4) to enhance structural strength;Sixth support (6) is movable ladder support, for installing portable ladder stand; Fixed assembly, including multiple groups of bolts (7,9,13) and supporting elastic washer (8,10,14), for fastening connection between walkway support group and the exhaust side panel (200) of diesel engine frame, supercharged air cooler shell (100); Work platform assembly, including walkway floor (11), floor rail (12) and rail column (15), the walkway floor (11) is fixedly arranged on the top of walkway support group by bolt (13), floor rail (12) and rail column (15) are mutually perpendicular, and are connected and arranged in the edge of walkway floor (11), form protective structure; The overall size of the maintenance platform device is customized according to the diesel engine cabin space, the ladder interface of the sixth support (6) is adapted to different height cabin platform, and the flexible docking of the maintenance platform device and the diesel engine cabin passage is realized.

2. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: The walkway support group is made of high-strength alloy steel and coated with a rust-proof coating.

3. The maintenance platform device for a turbo air cooler of a large-power low-speed diesel engine according to claim 1, characterized in that: The ladder interface of the sixth support (6) is a hinged structure, which can adjust the inclination angle of the portable ladder stand.

4. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: The walkway floor (11) is a grid steel plate with anti-slip patterns on the edges.

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

6. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: The height of the floor rail (12) is 1.2 meters, and the distance between the rail columns (15) is not more than 1.5 meters.

7. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: The fifth support (5) is an X-shaped cross support structure, and the two ends are fixed to the third support (3) and the fourth support (4) by welding.

8. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: The platform can meet the installation requirements of 6G50ME-C diesel engine.

9. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: The walkway support group is an I-shaped steel frame.

10. The large power low speed diesel engine supercharged air cooler overhauling platform device according to claim 1, characterized in that: Tool storage slots are provided below the walkway floor (11) for storing maintenance tools.

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