Marine engine and generator methanol fuel integrated supply sled
By designing and integrating a methanol fuel supply skid on a seagoing vessel, the main engine and generator can share a single auxiliary system for methanol fuel, solving the problems of large space occupation and unreasonable layout of independent skids, and improving the practicality and safety of the equipment.
Patent Information
- Application Number
- CN202521807872.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-08-25
AI Technical Summary
Onboard ships, the methanol fuel supply skids are two separate sets, which occupy a lot of space and require separate water glycol skids, resulting in wasted space and an unreasonable layout.
Design a skid-mounted methanol fuel integrated supply system for marine main engine and generator. It adopts a single-layer design with two main pipelines to supply the main engine and generator respectively. They share an auxiliary system for heat exchange and venting. Nitrogen purging and venting pipelines improve maintenance safety. A water-glycol system is shared for heat exchange.
It optimizes space utilization, reduces the risk of failure, improves maintenance safety and equipment usability, reduces the space occupied by the equipment, and facilitates maintenance and hoisting.
Smart Images
Figure CN224931771U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine methanol supply technology, and in particular to a skid-mounted integrated methanol fuel supply system for marine main engines and generators. Background Technology
[0002] Skid-mounted equipment, also known as skid-mounted equipment, is supported by an angle steel or I-beam chassis and integrates core components such as pumps, valves, temperature / pressure / flow meters, forming a functional unit that can be moved as a whole.
[0003] In response to the shipping industry's call for "decarbonization," the demand for methanol-fueled ships is increasing. Methanol is a toxic gas, but it is also a clean fuel, producing only carbon dioxide and water vapor upon complete combustion, which remains to be addressed. A methanol fuel supply skid consists of a main supply pipeline and an auxiliary system. Currently, when marine vessels are equipped with both methanol dual-fuel main engines and methanol dual-fuel generators, the methanol fuel supply skids for the main engine and generator are separate sets, each requiring a separate water-glycol skid for heat exchange. This consumes significant shipboard space and necessitates optimized design. Utility Model Content
[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art, and to provide a methanol fuel integrated supply skid for marine main engines and generators. It adopts a single-layer design and has two main pipelines for methanol fuel pressurization, heat exchange and filtration. One main pipeline supplies methanol fuel to the main engine and the other main pipeline supplies methanol fuel to the generator. It can meet the different needs of different methanol fuel users and solve the above-mentioned problems.
[0005] To achieve the above objectives, a skid-mounted integrated methanol fuel supply system for marine main engines and generators is provided, comprising a skid base, a water tank located on one side of one upper end of the skid base, a methanol injection pipe located on the same upper end of the skid base but away from the water tank, a first pump mounting base fixedly connected to the upper side of the skid base near the methanol injection pipe, two main engine methanol pumps and two auxiliary engine methanol pumps fixedly connected to the upper sides of the first pump mounting base respectively, a main engine dual filter located at the upper end of the skid base near the first pump mounting base corresponding to the two main engine methanol pumps, and an auxiliary engine dual filter located at the upper end of the skid base near the first pump mounting base corresponding to the two auxiliary engine methanol pumps; A nitrogen purging pipeline is provided in the area between the methanol injection pipeline and the water tank. A venting pipeline is provided between the methanol injection pipeline and the nitrogen purging pipeline. A shut-off valve is provided at the end of the venting pipeline, and a diaphragm pump is connected in parallel at both ends of the shut-off valve. An FVT cleaning pipeline is provided in the venting pipeline before the diaphragm pump. A second pump mounting base is fixedly connected to the side of the skid-mounted base near the water tank. Two water glycol pumps are fixedly connected above the second pump mounting base. The bottom of the water tank is connected to a heat exchange pipeline through the two water glycol pumps.
[0006] According to the aforementioned integrated methanol fuel supply skid for the main engine and generator of the marine vessel, the two main engine methanol pumps and the two auxiliary engine methanol pumps are respectively connected in parallel, and the methanol injection pipeline is connected to the parallel pipelines of the two main engine methanol pumps and the two auxiliary engine methanol pumps through branch pipelines respectively.
[0007] According to the aforementioned skid-mounted integrated methanol fuel supply system for marine main engine and generator, the heat exchange pipeline is provided with multiple heat exchangers at the end of the skid base away from the water tank, and the fuel outlets of the multiple heat exchangers are respectively connected to the corresponding main engine dual filter and auxiliary engine dual filter. All of the multiple heat exchangers are mounted on the skid base by brackets.
[0008] The main engine and generator of the marine vessel are integrated into a methanol fuel supply skid, with a one-way connection at the top.
[0009] According to the aforementioned skid-mounted integrated methanol fuel supply system for marine main engines and generators, the venting pipeline is connected in one direction to the lower part of each methanol pipeline section via branch pipelines and pneumatic remote control valves.
[0010] According to the aforementioned skid-mounted integrated methanol fuel supply system for the main engine and generator of the marine vessel, safety valve discharge pipelines are connected to the outlet pipes of the parallel pipelines of the two main engine methanol pumps and the two auxiliary engine methanol pumps.
[0011] According to the aforementioned skid-mounted integrated methanol fuel supply system for marine main engine and generator, lifting lugs are fixedly connected to both ends of the two sides of the skid-mounted base.
[0012] The above solution has at least one of the following beneficial effects: 1. This utility model is equipped with a nitrogen purging pipeline and a venting pipeline. In conjunction with the FVT cleaning pipeline, it can purge the methanol residue in the pipeline area to be inspected by nitrogen and diaphragm pump as needed, thereby improving the safety of maintenance. The skid layout is reasonable, and the two main pipelines can share a set of auxiliary systems to purge the methanol residue in the skid and FVT pipeline. They can also share a set of water glycol system for heat exchange. Furthermore, the center of gravity is reasonably arranged, which facilitates hoisting and prevents large-scale shaking, thus enhancing the practicality of the device.
[0013] 2. This utility model adopts an optimized and upgraded integrated design with a reasonable layout and small space. By setting two main methanol pumps and two auxiliary methanol pumps, along with two corresponding double filters and two water glycol pumps in the heat exchange system, the pipeline system's moving equipment can maintain a standby configuration, supporting maintenance during system operation, facilitating upkeep, reducing the risk of failure, and enhancing the practicality of the device.
[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 A three-dimensional structural diagram of the left side of the integrated methanol fuel supply skid for the marine main engine and generator of this utility model. Figure 2 A three-dimensional structural diagram of the right side of the skid-mounted integrated methanol fuel supply system for marine main engine and generator of this utility model. Figure 3 This utility model provides a pipeline diagram for the integrated methanol fuel supply skid of the marine main engine and generator.
[0016] Legend: 1. Skid-mounted base; 2. Lifting lugs; 3. Drainage pipeline; 4. Water tank; 5. First pump mounting base; 6. Second pump mounting base; 7. Methanol injection pipeline; 8. Main unit methanol pump; 9. Auxiliary unit methanol pump; 10. Main unit dual filter; 11. Auxiliary unit dual filter; 12. Water glycol pump; 13. Nitrogen purging pipeline; 14. Diaphragm pump; 15. FVT cleaning pipeline; 16. Heat exchange pipeline. Detailed Implementation
[0017] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.
[0018] Reference Figure 1-3This utility model embodiment provides a skid-mounted integrated methanol fuel supply system for marine main engines and generators, including a skid-mounted base 1. Lifting lugs 2 are fixedly connected to both ends of the two sides of the skid-mounted base 1. A water tank 4 is installed on one side of the upper end of the skid-mounted base 1. A methanol injection pipe 7 is installed on the same side of the upper end of the skid-mounted base 1, but away from the water tank 4. A first pump mounting base 5 is fixedly connected to the upper side of the skid-mounted base 1 near the methanol injection pipe 7. Two main engine methanol pumps 8 and two auxiliary engine methanol pumps 9 are fixedly connected to the upper sides of the first pump mounting base 5, respectively. The two main engine methanol pumps 8 and the two auxiliary engine methanol pumps 9 are all connected in parallel. The methanol injection pipe 7 is connected to the two main engine methanol pumps 8 and the two auxiliary engine methanol pumps 9 via branch pipes. The parallel pipelines of the auxiliary methanol pumps 9 are connected. The outlet pipes of the parallel pipelines of the two main methanol pumps 8 and the two auxiliary methanol pumps 9 are all connected to safety valve discharge pipelines. At the end of the skid-mounted base 1 near the first pump mounting base 5, a main dual filter 10 is installed at the position corresponding to the two main methanol pumps 8. At the end of the skid-mounted base 1 near the first pump mounting base 5, an auxiliary dual filter 11 is installed at the position corresponding to the two auxiliary methanol pumps 9. These filters remove solid particles, rust, welding slag and other mechanical impurities from the methanol, protecting downstream precision equipment. Since the dual filter has two independent filtration units, the methanol supply can be ensured by switching the two filtration units during maintenance. A nitrogen purging pipeline 13 is installed in the area between the methanol injection pipeline 7 and the water tank 4. The nitrogen purging pipeline 13 is connected to the upper part of each methanol pipeline section through branch pipelines and pneumatic remote control valves. A venting pipeline 3 is installed between the methanol injection pipeline 7 and the nitrogen purging pipeline 13. The venting pipeline 3 is connected to the lower part of each methanol pipeline section through branch pipelines and pneumatic remote control valves. A shut-off valve is installed at the end of the venting pipeline 3, and a diaphragm pump 14 is installed in parallel at both ends of the shut-off valve. An FVT cleaning pipeline 15 is installed in the venting pipeline 3 before the diaphragm pump 14. This allows the two methanol supply pipelines of the main unit and the auxiliary unit to share a set of auxiliary systems for supplying the skid and draining the residual methanol in the FVT pipeline, which is convenient for maintenance personnel to carry out maintenance work. A second pump mounting base 6 is fixedly connected to the side of the skid-mounted base 1 near the water tank 4. Two water glycol pumps 12 are fixedly connected above the second pump mounting base 6. The bottom of the water tank 4 is connected to a heat exchange pipeline 16 through the two water glycol pumps 12. Multiple heat exchangers are installed on the heat exchange pipeline 16 at the end of the skid-mounted base 1 away from the water tank 4. The fuel outlets of the multiple heat exchangers are respectively connected to the corresponding main engine dual filter 10 and auxiliary engine dual filter 11. The multiple heat exchangers are all mounted on the skid-mounted base 1 by brackets, which can lower the center of gravity of the skid and allow the two methanol supply pipelines of the main engine and auxiliary engine to share a water glycol heat exchange system. Furthermore, the parallel configuration of the two water glycol pumps 12 also allows for maintenance without shutting down the system.
[0019] Working principle: During maintenance, the nitrogen purging pipeline 13 and the venting pipeline 3, together with the FVT cleaning pipeline 15, can vent methanol residue in the pipeline area to be inspected through nitrogen and diaphragm pump 14 as needed, improving the safety of maintenance. The skid layout is reasonable, and the two main pipelines can share an auxiliary system for venting methanol residue in the skid and FVT pipelines. They can also share a water glycol system for heat exchange. At the same time, by placing the heavy heat exchange equipment and pipelines on the lower layer and the light venting auxiliary system on the upper layer, the center of gravity of the entire skid is reasonably arranged, which facilitates hoisting and prevents large-scale shaking.
[0020] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A skid-mounted system for integrated methanol fuel supply to marine main engine and generator, including a skid-mounted base (1), characterized in that: A water tank (4) is provided on one side of the upper end of the skid-mounted base (1). A methanol injection pipe (7) is provided on the same side of the upper skid-mounted base (1) but away from the water tank (4). A first pump mounting base (5) is fixedly connected to the side of the upper skid-mounted base (1) near the methanol injection pipe (7). Two main methanol pumps (8) and two auxiliary methanol pumps (9) are fixedly connected to the upper sides of the first pump mounting base (5). A main dual filter (10) is provided at the position corresponding to the two main methanol pumps (8) at the upper end of the skid-mounted base (1) near the first pump mounting base (5). An auxiliary dual filter (11) is provided at the position corresponding to the two auxiliary methanol pumps (9) at the upper end of the skid-mounted base (1) near the first pump mounting base (5). A nitrogen purging pipeline (13) is provided in the area between the methanol injection pipeline (7) and the water tank (4). A venting pipeline (3) is provided between the methanol injection pipeline (7) and the nitrogen purging pipeline (13). A shut-off valve is provided at the end of the venting pipeline (3), and a diaphragm pump (14) is connected in parallel at both ends of the shut-off valve. An FVT cleaning pipeline (15) is provided in the venting pipeline (3) before the diaphragm pump (14). A second pump mounting base (6) is fixedly connected to the side of the skid-mounted base (1) near the water tank (4). Two water glycol pumps (12) are fixedly connected above the second pump mounting base (6). The bottom of the water tank (4) is connected to a heat exchange pipeline (16) through the two water glycol pumps (12).
2. The integrated methanol fuel supply skid for marine main engine and generator as described in claim 1, characterized in that, The two main methanol pumps (8) and the two auxiliary methanol pumps (9) are all connected in parallel. The methanol injection pipeline (7) is connected to the parallel pipelines of the two main methanol pumps (8) and the two auxiliary methanol pumps (9) through branch pipelines.
3. The integrated methanol fuel supply skid for marine main engine and generator as described in claim 1, characterized in that, The heat exchange pipeline (16) has multiple heat exchangers at the end of the skid base (1) away from the water tank (4), and the fuel outlets of the multiple heat exchangers are respectively connected to the corresponding main machine dual filter (10) and auxiliary machine dual filter (11). The multiple heat exchangers are all mounted on the skid base (1) by brackets.
4. The integrated methanol fuel supply skid for marine main engine and generator as described in claim 1, characterized in that, The nitrogen purging pipeline (13) is connected to the upper part of each methanol pipeline section through branch pipelines and pneumatic remote control valves.
5. The integrated methanol fuel supply skid for marine main engine and generator as described in claim 1, characterized in that, The discharge pipeline (3) is connected in one direction to the bottom of each methanol pipeline section through branch pipelines and pneumatic remote control valves.
6. The integrated methanol fuel supply skid for marine main engine and generator as described in claim 2, characterized in that, Safety valve discharge pipelines are connected to the outlet pipes of the parallel pipelines of the two main methanol pumps (8) and the two auxiliary methanol pumps (9).
7. The integrated methanol fuel supply skid for marine main engine and generator as described in claim 1, characterized in that, Lifting lugs (2) are fixedly connected to both ends of the two sides of the skid-mounted base (1).