Engine methanol fuel supply system

Abstract

The utility model discloses an engine methanol fuel supply system belongs to engine technical field, solved the problem of the waste caused by the methanol blowout outside world in the methanol supply pipeline appears the situation of methanol leakage. The engine methanol fuel supply system, including methanol pump, collecting main pipe, controller, the output of methanol pump is equipped with methanol double -walled main pipe, be equipped with a plurality of double -walled tee joint on the methanol double -walled main pipe, every double -walled tee joint one of the joint is equipped with methanol double -walled branch pipe, one end of methanol double -walled branch pipe is equipped with methanol nozzle, and the corresponding joint of double -walled tee joint connected with methanol double -walled main pipe is equipped with first collecting branch pipe, and the corresponding joint of double -walled tee joint connected with methanol double -walled branch pipe is equipped with second collecting branch pipe. The utility model discloses an engine methanol fuel supply system, effectively reduces the resource waste.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and more specifically, to an engine methanol fuel supply system. Background Technology

[0002] Most existing ships use diesel fuel, but with increasingly stringent emission standards, alternative energy sources for marine engines are becoming increasingly important. Among these, the production technology of low-carbon fuel methanol is relatively mature, and methanol engines have broad application prospects.

[0003] A search of CN115234411A reveals a methanol engine fuel system, comprising a methanol supply pipeline including a main pipeline and multiple branch pipelines. The main pipeline is connected to a fuel tank, and each branch pipeline is connected to a cylinder of the engine. Each branch pipeline is equipped with an interconnected methanol supply pump and an injector. A cooling pipeline, through which cooling water flows, is connected to the injectors to cool them. A purging pipeline, connected to the methanol supply pipeline, the methanol supply pump, and the injectors, allows the introduction of inert gas to purge residual methanol from these systems. However, this patent simply purges out methanol from the supply pipeline in case of leakage, failing to adequately address the issue and resulting in waste. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing an engine methanol fuel supply system that can recover leaked methanol into a collection tank for subsequent reuse, effectively saving costs and reducing resource waste.

[0005] The technical solution of this utility model is as follows: A methanol fuel supply system for an engine includes a methanol pump, a collection manifold, and a controller. The output end of the methanol pump is equipped with a methanol double-wall manifold. The methanol double-wall manifold has multiple tee connectors, and one of the tee connectors has a methanol double-wall branch pipe. One end of each methanol double-wall branch pipe has a methanol nozzle. The inner pipe of the methanol double-wall manifold is connected to the inner pipe of the methanol double-wall branch pipe via a tee connector. A first double-wall connecting pipe is provided between the methanol double-wall manifold and the tee connectors. A second double-wall connecting pipe is provided between the methanol double-wall branch pipe and the tee connector. A first collection branch pipe is provided on the first double-wall connecting pipe, and a second collection branch pipe is provided on the second double-wall connecting pipe. Both the first and second collection branch pipes are connected to the collection manifold. One end of the collection manifold has a collection tank. A methanol detection instrument is provided on the collection manifold. A collection pump is also provided on the collection manifold. The methanol detection instrument is electrically connected to the collection pump via the controller.

[0006] As a further improvement, the first double-walled connecting pipe includes a first inner connecting pipe and a first outer connecting pipe. The first inner connecting pipe is installed inside the first outer connecting pipe. One end of the first inner connecting pipe is connected to the inner pipe of the methanol double-walled main pipe, and the other end of the first inner connecting pipe is connected to one of the joints of the tee connector. The first outer connecting pipe is connected to the outer pipe of the methanol double-walled main pipe. The second double-walled connecting pipe includes a second inner connecting pipe and a second outer connecting pipe. The second inner connecting pipe is installed inside the second outer connecting pipe. One end of the second inner connecting pipe is connected to the inner pipe of the methanol double-walled branch pipe, and the other end of the second inner connecting pipe is connected to the other joint of the tee connector. The second outer connecting pipe is connected to the outer pipe of the methanol double-walled branch pipe.

[0007] Furthermore, a first cavity is formed between the first inner connecting pipe and the first outer connecting pipe, and a first channel is provided on the first outer connecting pipe to connect the first cavity with the first collecting branch pipe. A second cavity is formed between the second inner connecting pipe and the second outer connecting pipe, and a second channel is provided on the second outer connecting pipe to connect the second cavity with the second collecting branch pipe. One end of the first channel and the second channel is provided with an oiling bolt, and the first collecting branch pipe and the second collecting branch pipe are both connected to the input end of the oiling bolt.

[0008] Furthermore, the collection tank includes a hollow tank body and an inner liner, the inner liner being installed inside the tank body, the inner liner having an inverted conical cross-section, and one end of the collection manifold passing through the tank body and communicating with the inner liner.

[0009] Furthermore, the outer wall of the inner liner and the inner wall of the tank form a third cavity, and the third cavity is provided with heat insulation material.

[0010] Furthermore, the bottom of the tank is provided with a discharge pipe that communicates with the inner liner, and the discharge pipe is provided with a shut-off valve.

[0011] Furthermore, the inner liner is made of corrosion-resistant metal.

[0012] Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model discloses an engine methanol fuel supply system that allows methanol to flow into a collection tank through a first or second collection branch pipe or a main collection pipe, thereby recovering and storing leaked methanol for subsequent use and effectively reducing resource waste. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the double-walled tee connector in this utility model;

[0017] Figure 3 for Figure 2 Enlarged structural diagram of A in the middle;

[0018] Figure 4 for Figure 2 Enlarged structural diagram of B in the middle;

[0019] Figure 5 This is a cross-sectional structural diagram of the collection tank in this utility model.

[0020] Wherein: 1-Methanol pump, 2-Methanol double-wall main pipe, 3-T-connector, 4-Methanol double-wall branch pipe, 5-Collection main pipe, 6-First collection branch pipe, 7-Second collection branch pipe, 8-Collection tank, 9-First cavity, 10-Second cavity, 11-Third cavity, 12-Oil bolt, 13-Drain pipe, 14-Collection pump, 15-Methanol nozzle, 16-First double-wall connecting pipe, 17-Second double-wall connecting pipe, 18-First channel, 19-Second channel, 20-Safety valve, 81-Tank body, 82-Inner liner, 161-First inner connecting pipe, 162-First outer connecting pipe, 171-Second inner connecting pipe, 172-Second outer connecting pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0022] See Figure 1-5A methanol fuel supply system for an engine includes a methanol pump 1, a collection manifold 5, and a controller. The output end of the methanol pump 1 is equipped with a methanol double-walled manifold 2. The methanol double-walled manifold 2 has multiple tee connectors 3. Each tee connector 3 has a methanol double-walled branch pipe 4 at one of its connectors. One end of each methanol double-walled branch pipe 4 is equipped with a methanol nozzle 15. The inner pipe of the methanol double-walled manifold 2 is connected to the inner pipe of the methanol double-walled branch pipe 4 via the tee connectors 3. A first double-walled connecting pipe 16 is provided between the methanol double-walled manifold 2 and the tee connectors 3. A second double-walled connecting pipe 17 is provided between the methanol double-walled branch pipe 4 and the tee connectors 3. The first double-walled connecting pipe 16 is equipped with... There is a first collection branch pipe 6, and a second collection branch pipe 7 is provided on the second double-walled connecting pipe 17. Both the first collection branch pipe 6 and the second collection branch pipe 7 are connected to the main collection pipe 5. A collection tank 8 is provided at one end of the main collection pipe 5. A methanol detection instrument is provided on the main collection pipe 5. A collection pump 14 is also provided on the main collection pipe 5. The methanol detection instrument is electrically connected to the collection pump 14 through a controller. The methanol detection instrument can be electrically connected to an alarm device through the controller. When the methanol detection instrument detects a methanol leak in the methanol double-walled main pipe 2 or the methanol double-labeled branch pipe 4, the alarm device can sound an alarm so that nearby staff can be notified and take action immediately.

[0023] When the methanol detector detects a methanol leak in the inner pipe of the methanol double-wall main pipe 2 or the methanol double-wall branch pipe 4 and sends a feedback to the controller, the controller starts the collection pump 14, which causes the leaked methanol to flow into the collection tank 8 along the first collection branch pipe 6 or the second collection branch pipe 7 and the collection main pipe 5. The leaked methanol is then recovered and stored for subsequent use, effectively reducing resource waste.

[0024] In this embodiment, the first double-walled connecting pipe 16 includes a first inner connecting pipe 161 and a first outer connecting pipe 162. The first inner connecting pipe 161 is installed inside the first outer connecting pipe 162. One end of the first inner connecting pipe 161 is connected to the inner pipe of the methanol double-walled main pipe 2, and the other end of the first inner connecting pipe 161 is connected to one of the joints of the tee connector 3. The first outer connecting pipe 162 is connected to the outer pipe of the methanol double-walled main pipe 2. The second double-walled connecting pipe 17 includes a second inner connecting pipe 171 and a second outer connecting pipe 172. The second inner connecting pipe 171 is installed inside the second outer connecting pipe 172. One end of the second inner connecting pipe 171 is connected to the inner pipe of the methanol double-wall branch pipe 4, and the other end of the second inner connecting pipe 171 is connected to the other connector of the tee connector 3. The second outer connecting pipe 172 is connected to the outer pipe of the methanol double-wall branch pipe 2. When methanol leaks from the methanol double-wall main pipe 2 or the methanol double-wall branch pipe 4, the leaked methanol will flow along the methanol double-wall main pipe 2 or the methanol double-wall branch pipe 4 to the first double-wall connecting pipe 16 or the second double-wall connecting pipe 17, and then flow through the first collecting branch pipe 6 or the second collecting branch pipe 7 into the collecting main pipe 5, and finally flow into the collecting tank 8, thus realizing the recovery of methanol leakage.

[0025] In this embodiment, a first cavity 9 is formed between the first inner connecting pipe 161 and the first outer connecting pipe 162. The first outer connecting pipe 162 is provided with a first channel 18 that connects the first cavity 9 to the first collecting branch pipe 6. A second cavity 10 is formed between the second inner connecting pipe 171 and the second outer connecting pipe 172. The second outer connecting pipe 172 is provided with a second channel 19 that connects the second cavity 10 to the second collecting branch pipe 7. One end of the first channel 18 and the second channel 19 is provided with an oiling bolt 12. The first collecting branch pipe 6 and the second collecting branch pipe 7 are both connected to the input end of the oiling bolt 12. The first collection branch pipe 6 or the second collection branch pipe 7 is connected to the first channel 18 or the second channel 19 via the oil passage bolt 12. When the methanol pump 1 or the collection pump 14 is running, it will generate vibration, which will be transmitted to the first collection branch pipe 6 and the second collection branch pipe 7. The oil passage bolt 12 will not be loosened due to the vibration, which greatly improves the reliability of the connection between the first collection branch pipe 6 or the second collection branch pipe 7 and the first channel 18 or the second channel 19, and effectively prevents leakage at the connection between the first collection branch pipe 6 or the second collection branch pipe 7 and the first channel 18 or the second channel 19 due to long-term vibration.

[0026] In this embodiment, the collection tank 8 includes a hollow tank body 81 and an inner liner 82. The inner liner 82 is installed inside the tank body 81 and has an inverted conical cross-section. One end of the collection manifold 5 passes through the tank body 81 and communicates with the inner liner 82. When there are particulate impurities in the inner liner 82, the particulate impurities settle at the bottom of the inner liner 82, which facilitates the discharge of particulate impurities. Furthermore, the inner liner 82 with this structure can effectively ensure that all methanol inside can be discharged, avoiding the residue and accumulation of methanol in the inner liner 82.

[0027] In this embodiment, the outer wall of the inner liner 82 and the inner wall of the tank 81 form a third cavity 11. The third cavity 11 is provided with heat insulation material, which can be polyurethane foam, having good heat insulation performance and mechanical strength, and can improve the overall rigidity and stability of the collection tank 8. In other embodiments, different heat insulation materials can be replaced according to actual use. The methanol in the methanol double-wall main pipe 2 and methanol double-wall branch pipe 4 is usually in liquid state, so the methanol stored in the inner liner 82 is also in liquid state. Using heat insulation material in the second cavity 10 can prevent the methanol in the inner liner 82 from being vaporized by high temperature, thus preventing safety accidents.

[0028] Preferably, the top of the collection tank 8 is provided with a safety valve 20, which is connected to the inner liner 82. When methanol vaporizes and causes the pressure inside the inner liner 82 to rise, some of the pressure can be released from the safety valve 20, so that the pressure inside the inner liner 82 is within a safe range, thus preventing the pressure inside the inner liner 82 from exceeding the limit value and causing a safety accident.

[0029] In this embodiment, the bottom of the tank 81 is provided with a discharge pipe 13 that communicates with the inner liner 82. The discharge pipe 13 is provided with a shut-off valve. The methanol stored in the inner liner 82 can be discharged through the discharge pipe 13 for easy recycling. Furthermore, due to the inverted conical structure of the inner liner 82, when there are particulate impurities in the inner liner 82, the particulate impurities will settle at the bottom of the inner liner 82 and can also be discharged through the discharge pipe 13.

[0030] In this embodiment, the inner liner 82 is made of corrosion-resistant metal. Methanol leaking from the methanol double-wall main pipe 2 or methanol double-wall branch pipe 4 flows into the inner liner 82 through the first collection branch pipe 6 or the second collection branch pipe 7 and the collection main pipe 5. Methanol is corrosive, and the fact that the inner liner 82 is made of corrosion-resistant metal can effectively extend the service life of the inner liner 82.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. An engine methanol fuel supply system, characterized in that, The system includes a methanol pump (1), a main collection pipe (5), and a controller. The output end of the methanol pump (1) is equipped with a methanol double-wall main pipe (2). The methanol double-wall main pipe (2) is equipped with multiple tee connectors (3). Each tee connector (3) has a methanol double-wall branch pipe (4) on one of its connectors. One end of each methanol double-wall branch pipe (4) is equipped with a methanol nozzle (15). The inner pipe of the methanol double-wall main pipe (2) is connected to the inner pipe of the methanol double-wall branch pipe (4) via the tee connectors (3). A first double-wall connecting pipe (16) is provided between the methanol double-wall main pipe (2) and the tee connectors (3). A second double-walled connecting pipe (17) is provided between the branch pipe (4) and the three-way pipe joint (3). A first collecting branch pipe (6) is provided on the first double-walled connecting pipe (16). A second collecting branch pipe (7) is provided on the second double-walled connecting pipe (17). The first collecting branch pipe (6) and the second collecting branch pipe (7) are both connected to the main collecting pipe (5). A collecting tank (8) is provided at one end of the main collecting pipe (5). A methanol detection instrument is provided on the main collecting pipe (5). A collecting pump (14) is also provided on the main collecting pipe (5). The methanol detection instrument is electrically connected to the collecting pump (14) through a controller.

2. The engine methanol fuel supply system according to claim 1, characterized in that, The first double-walled connecting pipe (16) includes a first inner connecting pipe (161) and a first outer connecting pipe (162). The first inner connecting pipe (161) is installed inside the first outer connecting pipe (162). One end of the first inner connecting pipe (161) is connected to the inner pipe of the methanol double-walled main pipe (2). The other end of the first inner connecting pipe (161) is connected to one of the joints of the tee connector (3). The first outer connecting pipe (162) is connected to the outer pipe of the methanol double-walled main pipe (2). The second double-walled connecting pipe (17) includes a second inner connecting pipe (171) and a second outer connecting pipe (172). The second inner connecting pipe (171) is installed inside the second outer connecting pipe (172). One end of the second inner connecting pipe (171) is connected to the inner pipe of the methanol double-walled branch pipe (4). The other end of the second inner connecting pipe (171) is connected to the other joint of the tee connector (3). The second outer connecting pipe (172) is connected to the outer pipe of the methanol double-walled branch pipe (2).

3. The engine methanol fuel supply system according to claim 2, characterized in that, A first cavity (9) is formed between the first inner connecting pipe (161) and the first outer connecting pipe (162). The first outer connecting pipe (162) is provided with a first channel (18) that connects the first cavity (9) and the first collecting branch pipe (6). A second cavity (10) is formed between the second inner connecting pipe (171) and the second outer connecting pipe (172). The second outer connecting pipe (172) is provided with a second channel (19) that connects the second cavity (10) and the second collecting branch pipe (7). One end of the first channel (18) and the second channel (19) is provided with an oiling bolt (12). The first collecting branch pipe (6) and the second collecting branch pipe (7) are both connected to the input end of the oiling bolt (12).

4. The engine methanol fuel supply system according to claim 1, characterized in that, The collection tank (8) includes a hollow tank body (81) and an inner liner (82). The inner liner (82) is installed inside the tank body (81). The cross-section of the inner liner (82) is an inverted cone shape. One end of the collection main pipe (5) passes through the tank body (81) and communicates with the inner liner (82).

5. The engine methanol fuel supply system according to claim 4, characterized in that, The outer wall of the inner liner (82) and the inner wall of the tank (81) form a third cavity (11), and the third cavity (11) is provided with heat insulation material.

6. The engine methanol fuel supply system according to claim 5, characterized in that, The bottom of the tank (81) is provided with a discharge pipe (13) that communicates with the inner liner (82), and the discharge pipe (13) is provided with a shut-off valve.

7. The engine methanol fuel supply system according to claim 6, characterized in that, The inner liner (82) is made of corrosion-resistant metal.

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