A methanol dual-fuel ship connection and filling mechanical interlocking safety filling connector

Abstract

A kind of methanol dual-fuel ship connection and filling mechanical interlocking type safety filling connector belongs to the technical field of methanol fuel.The connector includes receiving pipe head, push-pull sleeve and filling pipe head provided with filling valve, and the connector guarantees that filling valve and push-pull sleeve reach mechanical interlocking.After push-pull sleeve connection is completed, filling valve can be connected, and if push-pull sleeve is not connected, filling valve is mechanically locked and cannot be opened valve;In turn, after filling valve is completely closed, push-pull sleeve can be separated, and before filling valve is not completely closed, push-pull sleeve is mechanically locked and cannot complete separation action.The connector is safer, and can more guarantee that leakage does not occur due to human operation error during filling process.

Description

Technical Field

[0001] This utility model relates to a mechanically interlocked safety refueling connector for connecting and refueling methanol dual-fuel ships, which belongs to the technical field of methanol fuel. Background Technology

[0002] Currently, methanol fuel refueling mainly uses ordinary quick couplings or flange connections, without a specific utility model. Flange connections require several bolts for fixing, which is quite inconvenient. While their safety and sealing performance are relatively good, there is a risk that the valve may be mistakenly closed during refueling, leading to leakage if the flange is disassembled in this situation. Ordinary quick couplings are more convenient to use, but their sealing performance is not as reliable as flanges, and they also pose similar safety hazards. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a mechanically interlocked safety refueling connector for methanol dual-fuel vessels. Through the mechanical design of the refueling pipe head, receiving pipe head, push-pull sleeve, and refueling valve, it achieves mechanical interlocking between the refueling valve and the push-pull sleeve, as well as forced linkage between refueling valve unlocking and refueling valve closure during connection locking and separation operation. While ensuring ease of use and safety, it further prevents leaks caused by misoperation.

[0004] The technical solution adopted in this utility model is: a mechanically interlocked safety refueling connector for connecting and refueling methanol dual-fuel ships, which includes a receiving pipe head, a push-pull sleeve and a refueling pipe head equipped with a refueling valve; In the filling tube head, the filling tube wall is connected to the filling connecting wall, and the filling connecting wall has circumferentially distributed locking slots. Elastic locking blocks are set in the locking slots, and the elastic locking blocks are raised or lowered around the locking block pin. In the receiving tube head, the receiving tube wall is connected to the receiving connecting wall, and there is a groove between the first and second receiving connecting walls; the filling connecting wall and the receiving connecting wall are matched. In the filling valve, the lever is located at one end of the wrench connecting block, and the valve body is fixedly installed at the other end of the wrench connecting block, which passes through the movable cavity and inserts the wrench disc into the filling tube head; the wrench disc is a horseshoe-shaped structure formed by the wrench arc and the wrench string, and the lever and the wrench string are perpendicular to each other; the wrench disc is located in the movable cavity, and rotating the lever causes the wrench disc to rotate in the movable cavity; The push-pull sleeve includes a sleeve body and a sleeve stepped limiting rod. The sleeve stepped limiting rod includes an integral sleeve connecting section and a variable cross-section section. One end of the sleeve connecting section is fixedly connected to the sleeve body. The sleeve stepped limiting rod cooperates with the wrench disc in the movable cavity. Furthermore, the outer diameters of the filling pipe wall and the filling connecting wall are equal, while the inner diameter of the filling pipe wall is smaller than the inner diameter of the filling connecting wall.

[0005] Furthermore, one end of the filling tube head is provided with a connecting thread for connecting to the filling tube.

[0006] Furthermore, the elastic block includes a block connecting end and a block end, with a block pin provided on the block connecting end, and the block pin inserted into the side wall of the block groove.

[0007] Furthermore, the inner diameters of the receiving tube wall and the receiving connecting wall are equal, while the outer diameter of the receiving tube wall is larger than the outer diameter of the receiving connecting wall.

[0008] Furthermore, push-pull handles are symmetrically arranged on the outer surface of the sleeve.

[0009] Furthermore, a limiting pin is provided at the end of the variable cross-section segment.

[0010] The beneficial effects of this utility model are as follows: This mechanically interlocked safety refueling connector solution for methanol dual-fuel vessels, through the mechanical interlock design of the refueling pipe head, receiving pipe head, push-pull sleeve, and refueling valve, achieves forced linkage between connection locking and refueling valve unlocking, and separation operation and refueling valve closing. Structurally, it eliminates the safety hazards of refueling without a secure connection or separation without closing the refueling valve, effectively preventing methanol leakage, explosion, and personnel poisoning risks. The cooperation between the elastic locking block and the groove, as well as the limiting design of the push-pull sleeve, ensures the stability of the pipe head connection, preventing separation due to vibration or accidental pulling during refueling. The precise matching structure design of each component makes the operation steps simple and clear, achieving safe refueling without complex control programs. It balances operational convenience and reliability, is suitable for the offshore refueling scenario of methanol dual-fuel vessels, and meets the safety and efficiency requirements for refueling flammable and toxic media. Attached Figure Description

[0011] Figure 1 This is a three-dimensional diagram of a mechanically interlocked safety refueling connector for connecting and refueling a methanol dual-fuel ship.

[0012] Figure 2 This is a cross-sectional view of the mechanically interlocked safety filling connector (in the disengaged state) for connection and filling.

[0013] Figure 3 This is a top view of the mechanically interlocked safety filling connector (in the disconnected state) for connection and filling.

[0014] Figure 4 This is a cross-sectional view of the mechanically interlocked safety filling connector (in the disengaged state) for connection and filling.

[0015] Figure 5 This is a cross-sectional view of the mechanically interlocked safety filling connector (in the connected state).

[0016] Figure 6This is a top view of the mechanically interlocked safety filling connector (in the connected state).

[0017] Figure 7 This is an interface diagram of the mechanically interlocked safety filling connector (connected state) for connection and filling.

[0018] Figure 8 This is a schematic diagram of the elastic card block structure.

[0019] In the diagram: 1. Filling pipe head, 11. Filling connection wall, 12. Locking slot, 13. Elastic locking block, 14. Locking pin, 15. Locking connection end, 16. Locking end, 17. Filling pipe wall, 18. Connecting thread; 2. Filling valve; 21. Handle; 22. Wrench disc; 23. Wrench string; 24. Connecting block; 25. Valve body; 26. Movable chamber; 27. Movable chamber body; 28. Wrench arc. 3. Push-pull sleeve; 31. Sleeve body; 32. Push-pull handle; 33. Sleeve stepped limit rod; 34. Sleeve connecting section; 35. Variable cross section; 36. Limiting pin. 4. Receiving tube head; 41. First unit; 42. Groove; 43. Second unit; 44. Receiving tube wall; 45. Receiving connection wall. Detailed Implementation

[0020] The present invention will be specifically described below through embodiments. It should be noted that the following embodiments are only used to further illustrate the present invention, but are not limited thereto, unless otherwise stated.

[0021] Figures 1 to 8 This is a mechanically interlocked safety refueling connector for connecting and refueling methanol dual-fuel ships. It includes a receiving pipe head 4, a push-pull sleeve 3, and a refueling pipe head 1 equipped with a refueling valve 2.

[0022] In the filling tube head 1, the filling tube wall 17 is connected to the filling connecting wall 11. The filling connecting wall 11 has circumferentially distributed locking grooves 12, and elastic locking blocks 13 are installed within the locking grooves 12. The elastic locking blocks 13 can be raised or lowered around the locking pin 14. The outer diameters of the filling tube wall 17 and the filling connecting wall 11 are equal, while the inner diameter of the filling tube wall 17 is smaller than the inner diameter of the filling connecting wall 11. One end of the filling tube head 1 is provided with a connecting thread 18 for connecting to the filling tube. The elastic locking block 13 includes a locking block connecting end 15 and a locking block end 16. A locking pin 14 is installed on the locking block connecting end 15, and the locking pin 14 is inserted into the side wall of the locking groove 12.

[0023] In the receiving tube head 4, the receiving tube wall 44 is connected to the receiving connecting wall 45, and there is a groove 42 between the first unit 41 and the second unit 43 of the receiving connecting wall 45; the filling connecting wall 11 and the receiving connecting wall 45 are fitted together. The inner diameters of the receiving tube wall 44 and the receiving connecting wall 45 are equal, and the outer diameter of the receiving tube wall 44 is larger than the outer diameter of the receiving connecting wall 45.

[0024] In the filling valve 2, the lever 21 is located at one end of the wrench connecting block 24, passes through the movable cavity 27, and is inserted into the filling tube head 1. The other end of the wrench connecting block 24 is fixedly installed with the valve body 25. The wrench disc 22 is a horseshoe-shaped structure formed by the wrench arc 28 and the wrench string 23. The lever 21 and the wrench string 23 are perpendicular to each other. The wrench disc 22 is located in the movable cavity 26. Rotating the lever 21 causes the wrench disc 22 to rotate in the movable cavity 26.

[0025] The push-pull sleeve 3 includes a sleeve body 31 and a sleeve stepped limiting rod 33. Push-pull handles 32 are symmetrically arranged on the outer surface of the sleeve body 31. The sleeve stepped limiting rod 33 includes an integral sleeve connecting section 34 and a variable cross-section section 35. One end of the sleeve connecting section 34 is fixedly connected to the sleeve body 31; a limiting pin 36 is provided at the end of the variable cross-section section 35. The sleeve stepped limiting rod 33 cooperates with the wrench disc 22 within the movable cavity 26.

[0026] The filling connector includes both connection and disconnection modes: Connection mode: The receiving connection wall 45 and the filling connection wall 11 cooperate with each other. The filling connection wall 11 is sleeved on the outside of the receiving connection wall 45. Pull the push-pull sleeve 3 to the outside of the connection between the filling tube head 1 and the receiving tube head 4. The push-pull sleeve 3 presses against the elastic locking block 13, so that the elastic locking block 13 is locked into the groove 42.

[0027] At this time, the variable cross-section section 35 of the sleeve stepped limiting rod 33 is in the movable cavity 26. The wrench disc 22 cooperates with the variable cross-section section 35. Rotating the wrench handle 21 realizes the opening and closing of the filling valve 2: when the wrench handle 21 is in the same direction as the filling tube head 1, and the wrench chord 23 is perpendicular to the variable cross-section section 35, the filling valve 2 opens; the limiting section of the sleeve connecting section 34 is limited by the wrench arc 28, and thus the push-pull sleeve 3 is locked.

[0028] Separation mode: The wrench disc 22 in the movable cavity 26 cooperates with the variable cross-section section 35. Rotating the wrench handle 21 opens and closes the filling valve 2. When the wrench handle 21 is perpendicular to the filling tube head 1, the wrench string 23 is aligned with the variable cross-section section 35, and the filling valve 2 is closed. At this time, pulling the sleeve stepped limit rod 33 moves it in the gap between the wrench string 23 and the movable cavity 27, and pushing and pulling the sleeve 3 unlocks it. The wrench disc 22 is limited by the sleeve connecting section 34 and cannot rotate, thus locking the filling valve 3. Push the push-pull sleeve 3 away from the outside of the connection between the filling tube head 1 and the receiving tube head 4, and the elastic block 13 pops up and leaves the groove 42, separating the filling connection wall 11 and the receiving connection wall 45.

[0029] When the above technical solution is used: I. Connection Preparation Phase: Establish pipe joint coordination to lay the foundation for interlocking; Confirm the initial state of each component of the filling connector: the filling valve 2 is in the closed state, the handle 21 is perpendicular to the filling tube head 1, the push-pull sleeve 3 is in the "unlocked position" and does not cover the mating area between the filling tube head 1 and the receiving tube head 4, and the elastic block 13 bounces up under its own elasticity.

[0030] Align the docking interface: Align the filling connection wall 11 of the filling tube head 1 with the receiving connection wall 45 of the receiving tube head 4, ensuring that the filling connection wall 11 can be smoothly fitted onto the outside of the receiving connection wall 45, and that the groove 42 of the receiving connection wall 45 corresponds to the position of the locking groove 12 of the filling connection wall 11.

[0031] Complete the tube head fitting: Push the filling tube head 1 towards the receiving tube head 4 until the filling connecting wall 11 and the receiving connecting wall 45 are completely fitted together. At this time, the groove 42 and the locking slot 12 are precisely aligned, preparing for the elastic locking block 13 to engage.

[0032] II. Connection Locking Stage: The pipe head is fixed and the filling valve is unlocked, entering the filling ready state; Pull the push-pull sleeve to lock the tube head: Hold the symmetrical push-pull handle 32 on the outside of the push-pull sleeve 3 and pull the sleeve body 31 towards the connection between the filling tube head 1 and the receiving tube head 4 until the sleeve body 31 completely covers the mating area.

[0033] Elastic locking and positioning: During the movement of the push-pull sleeve 3, its inner wall squeezes the locking end 16 of the elastic locking block 13, causing the elastic locking block 13 to fall downward around the locking pin 14 and finally lock into the groove 42 of the receiving connection wall 45, thereby achieving mechanical fixation between the filling tube head 1 and the receiving tube head 4.

[0034] Sleeve stepped limit rod in place: After the push-pull sleeve 3 is in place, its integrated sleeve stepped limit rod 33 moves with the sleeve body 31, the variable cross section 35 enters the movable cavity 26, and cooperates with the wrench plate 22. The limit pin 36 at the end of the variable cross section 35 prevents the limit rod from coming out.

[0035] Unlock the filling valve: Turn the lever 21 to rotate it from a position perpendicular to the filling tube head 1 to a position aligned with the filling tube head 1.

[0036] Interlock confirmation: At this time, the wrench string 23 of the wrench disc 22 is perpendicular to the variable cross section 35, and the valve body 25 of the filling valve 2 opens as the wrench connecting block 24 rotates; at the same time, the limiting section of the sleeve connecting section 34 is limited by the wrench arc 28 of the wrench disc 22, and the push-pull sleeve 3 cannot move, realizing the interlock logic of pipe head locking-filling valve unlocking, and the joint enters the filling ready state.

[0037] III. During the refueling implementation phase, maintain the interlock status and complete the methanol refueling. Start the refueling system: Connect the refueling pipe through the connecting thread 18 at one end of the refueling pipe head 1, start the methanol refueling equipment, and the methanol enters the ship's methanol tank through the refueling pipe wall 17, the refueling connecting wall 11, the receiving connecting wall 45, and the receiving pipe wall 44.

[0038] Maintaining the interlock state: During the filling process, because the push-pull sleeve 3 is limited by the wrench disc 22, it cannot be pulled to unlock, and the elastic block 13 is always locked in the groove 42, and the pipe head connection is secure; at the same time, the filling valve 2 remains open to ensure stable methanol delivery.

[0039] Monitoring the refueling process: Based on the ship's refueling needs, the refueling volume is monitored through external metering equipment until the preset refueling volume is reached, at which point the refueling system stops operating.

[0040] IV. Separation Preparation Stage: Close the injection valve and unlock the push-pull sleeve to prepare for pipe head separation; To close the filling valve: rotate the lever 21 in the opposite direction, so that the lever 21 is rotated from the state aligned with the filling pipe head 1 back to the state perpendicular to the filling pipe head 1.

[0041] Release the sleeve limit: When the handle 21 is turned, the wrench disc 22 is rotated in the movable cavity 26 until the wrench string 23 is aligned with the direction of the variable cross section 35. At this time, the wrench disc 22 and the sleeve connection section 34 form a limit, and the filling valve 2 is locked and cannot be opened again.

[0042] Unlocking the push-pull sleeve: After the wrench string 23 is aligned with the variable cross section 35, a gap is formed between the wrench string 23 and the movable cavity 27. The sleeve step limit rod 33 can move within the gap, and the locking state of the push-pull sleeve 3 is released.

[0043] V. Separation Completion Stage: Release the tube head fixation and restore the initial state; Push the push-pull sleeve to reset: Hold the push-pull handle 32 and push the sleeve body 31 away from the pipe head connection so that the push-pull sleeve 3 completely leaves the mating area and no longer squeezes the elastic locking block 13.

[0044] Elastic locking block pops up and disengages: After the push-pull sleeve 3 is removed, the elastic locking block 13 lifts up around the locking block pin 14 under its own elasticity, and the locking block end 16 disengages from the groove 42 of the receiving connection wall 45, thus releasing the pipe head fixing relationship.

[0045] Separate tube head: Pull the filling tube head 1 to separate the filling connection wall 11 from the receiving connection wall 45, completing the entire connection-filling-separation process.

[0046] Restore to initial state: Check the reset status of each component, ensuring that the elastic block 13 pops up, the push-pull sleeve 3 returns to the unlocked position, and the filling valve 2 is closed and locked, so as to prepare for the next use.

[0047] Fluid is injected from filling pipe 1 to receiving pipe 4, passing through filling valve 2 and push-pull sleeve 3; ensuring that filling valve 2 and push-pull sleeve 3 are mechanically interlocked. That is, filling valve 2 can only be connected after push-pull sleeve 3 is connected. If push-pull sleeve 3 is not connected, filling valve 2 is mechanically locked and cannot be opened. Conversely, push-pull sleeve 3 can only be separated after filling valve 2 is completely closed. Before filling valve 2 is completely closed, push-pull sleeve 3 is mechanically locked and cannot complete the separation action.

[0048] This connector ensures a mechanical interlock between the leak-proof valve and the quick-connect. Specifically, the leak-proof valve can only be connected after the quick-connect is fully engaged; if the quick-connect is not fully engaged, the leak-proof valve is mechanically locked and cannot be opened. Conversely, the quick-connect can only be disengaged after the leak-proof valve is completely closed; if the leak-proof valve is not fully closed, the quick-connect is mechanically locked and cannot be disengaged. This provides greater safety and better guarantees that leaks will not occur due to human error during refueling.

[0049] Following the above logical sequence ensures that leaks will not occur due to human error during the refueling process.

[0050] The above embodiments are only used to illustrate the present utility model. Any equivalent transformations and improvements made on the basis of the technical solution of the present utility model shall not be excluded from the protection scope of the present utility model.

Claims

1. A mechanically interlocked safety refueling connector for connecting and refueling methanol dual-fuel ships, characterized in that: It includes a receiving tube head (4), a push-pull sleeve (3), and a filling tube head (1) equipped with a filling valve (2); In the filling tube head (1), the filling tube wall (17) is connected to the filling connecting wall (11), and the filling connecting wall (11) has circumferentially distributed locking slots (12). An elastic locking block (13) is provided in the locking slot (12), and the elastic locking block (13) is raised or lowered around the locking pin (14). In the receiving tube head (4), the receiving tube wall (44) is connected to the receiving connecting wall (45), and there is a groove (42) between the first (41) and the second (43) of the receiving connecting wall (45); the filling connecting wall (11) and the receiving connecting wall (45) cooperate with each other; In the filling valve (2), the lever (21) is located at one end of the wrench connecting block (24), and passes through the movable cavity (27) and the wrench disc (22) and is inserted into the filling tube head (1). The other end of the wrench connecting block (24) is fixedly set with valve body (25); the wrench disc (22) is a horseshoe-shaped structure formed by the wrench arc (28) and the wrench string (23). The lever (21) and the wrench string (23) are perpendicular to each other; the wrench disc (22) is located in the movable cavity (26). Rotating the lever (21) will drive the wrench disc (22) to rotate in the movable cavity (26); The push-pull sleeve (3) includes a sleeve body (31) and a sleeve stepped limiting rod (33). The sleeve stepped limiting rod (33) includes an integral sleeve connecting section (34) and a variable cross-section section (35). One end of the sleeve connecting section (34) is fixedly connected to the sleeve body (31). The sleeve stepped limiting rod (33) cooperates with the wrench disc (22) in the movable cavity (26).

2. The methanol dual-fuel ship docking and refueling mechanical interlock safety refueling connector according to claim 1, characterized in that: The outer diameter of the filling pipe wall (17) is equal to that of the filling connecting wall (11), and the inner diameter of the filling pipe wall (17) is smaller than that of the filling connecting wall (11).

3. The methanol dual-fuel ship docking and refueling mechanical interlock safety refueling connector according to claim 1, characterized in that: One end of the filling tube head (1) is provided with a connecting thread (18) for connecting to the filling tube.

4. The methanol dual-fuel ship docking and refueling mechanical interlock safety refueling connector according to claim 1, characterized in that: The elastic block (13) includes a block connecting end (15) and a block end (16). A block pin (14) is provided on the block connecting end (15), and the block pin (14) is inserted into the side wall of the block groove (12).

5. The methanol dual-fuel ship docking and refueling mechanical interlock safety refueling connector according to claim 1, characterized in that: The inner diameters of the receiving tube wall (44) and the receiving connecting wall (45) are equal, and the outer diameter of the receiving tube wall (44) is greater than the outer diameter of the receiving connecting wall (45).

6. The methanol dual-fuel ship docking and refueling mechanical interlock safety refueling connector according to claim 1, characterized in that: Push-pull handles (32) are symmetrically arranged on the outer surface of the sleeve body (31).

7. The methanol dual-fuel ship docking and refueling mechanical interlock safety refueling connector according to claim 1, characterized in that: A limiting pin (36) is provided at the end of the variable cross section (35).

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