Marine methanol filling pry

Abstract

The invention relates to a marine methanol filling pry which comprises a box body used for storing methanol; the filling pipeline is used for filling methanol into the filling ship; the hose is used for connecting the filling ship and the connected hose; the flexible connecting device is used for realizing flexible connection between the filling pipeline and the hose; the flexible connecting device comprises a flange connected with the filling ship; the flexible joint is used for connecting the flange and the hose; according to the flexible joint, the hose is matched with the fluctuation state of the filling ship through phase change in the flexible state, and the hose and the flange can be conveniently in butt joint in the rigid state. The positions generated in the shaking process of the hose and the injected ship wall are matched through the flexible joint, so that stress between the hose and the flange is buffered, and normal methanol injection work is ensured.

Description

Technical Field

[0001] This application relates to the technical field of ship fuel refueling, and in particular to a ship methanol refueling skid. Background Technology

[0002] Current marine methanol refueling systems typically employ a skid-mounted design, integrating the refueling pipeline, valves, flow meters, emergency shut-off devices, nitrogen purging system, and control system onto a single base.

[0003] The bunkering skid connects to the shore-based storage tank or the receiving flange of the bunkering vessel and the receiving vessel. Before bunkering, the system purges the air in the pipeline with nitrogen to ensure an inert environment. During bunkering, a mass flow meter monitors the bunkering volume in real time, and the control system monitors the pressure, temperature, and liquid level. In case of an emergency, the emergency shut-off device system triggers the emergency shut-off valve to close and disconnects the connection via a dry quick-connect coupling to prevent methanol leakage. After bunkering is completed, nitrogen is used to purge any remaining methanol in the pipeline into the receiving vessel's tank, and then the connection is disconnected.

[0004] During the refueling process, ships are affected by tides, waves, and changes in load, which can cause six degrees of freedom of swaying. Traditional fixed refueling skids or those that rely solely on the flexibility of hoses are prone to stress concentration at the connection points when dealing with large relative displacements, which can even lead to seal failure. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a marine methanol refueling skid.

[0006] The technical solution for a marine methanol refueling skid provided in this application is as follows:

[0007] A marine methanol refueling skid, comprising:

[0008] The container is used to store methanol;

[0009] The refueling pipeline was used to refuel the refueling vessel with methanol.

[0010] Hose, used to connect the refueling vessel to the connecting hose;

[0011] Flexible connection device, used to achieve flexible connection between the filling pipeline and the hose;

[0012] The flexible connection device includes:

[0013] Flange, used to connect to the bunkering vessel;

[0014] Flexible joints are used to connect flanges and hoses;

[0015] The flexible joint achieves adaptation between the flexible hose and the fluctuating state of the refueling vessel through phase change, while facilitating docking of the hose and flange in the rigid state.

[0016] Furthermore, the flexible joint includes:

[0017] The outer casing connects to the flange;

[0018] Inner shell, connected to the hose;

[0019] Axial buffer assembly to buffer the movement of the inner and outer shells along their length; and

[0020] Phase change buffer assembly, used to connect the outer shell and the inner shell;

[0021] The phase change buffer assembly achieves dynamic connection between the hose and the flange in its initial liquid state, and achieves positioning effect between the hose and the flange after its phase change.

[0022] Furthermore, the phase change buffer assembly includes:

[0023] An array of electromagnetic coils is wound around the outer wall of the casing;

[0024] An elastic buffer capsule, used to connect the outer shell and the inner shell and for filling with magnetorheological fluid; and

[0025] Shear-resistant components are used to enhance the shear force exerted along the length of the outer and inner shells during swaying.

[0026] The elastic buffer bladder is designed in a ring-shaped configuration.

[0027] Furthermore, the shear-resistant element includes:

[0028] External magnetic pole pieces are fixed to the inner peripheral wall of the elastic buffer bladder near the outer shell; and

[0029] The internal magnetic pole piece is fixed to the inner peripheral wall of the elastic buffer bladder near the internal cavity.

[0030] The outer and inner magnetic pole pieces are arranged alternately and along the length direction.

[0031] Furthermore, both the outer and inner magnetic pole pieces are provided with perforations, and elastic sheets are provided at the perforations.

[0032] Furthermore, the elastic sheet is inclined, and the elastic sheets of the inner magnetic pole piece and the outer magnetic pole piece are inclined relative to each other.

[0033] Furthermore, the axial buffer assembly includes:

[0034] The vertical block is fixedly connected to the end of the inner ring.

[0035] A buffer box is installed on the inner wall of the outer casing;

[0036] The buffer rod slides out of the buffer box and its end abuts against the vertical block; and

[0037] The deceleration section is used to reduce the movement speed of the buffer rod.

[0038] Furthermore, the deceleration unit includes:

[0039] The buffer plate is slidably installed inside the buffer box; and

[0040] Reset component, used to reset the buffer plate;

[0041] One end of the buffer rod is fixedly connected to the buffer plate, which has multiple buffer holes, and the buffer tank is filled with liquid medium.

[0042] In summary, the beneficial technical effects of this application are as follows:

[0043] 1. When the hose begins to oscillate as it floats with the receiving vessel, the flexible joint is used to counteract the undulation stress of the hose during the floating process. Therefore, it greatly reduces the undulation stress between the flange and the hose, as well as between the flange and the receiving vessel. In other words, the flexible joint achieves the adaptation of the flexible hose to the undulating state of the bunkering vessel through phase change, and facilitates the docking of the hose and the flange in the rigid state.

[0044] 2. During the oil filling process, there is no need to energize the electromagnetic coil array. At this time, the magnetorheological fluid inside the elastic buffer bladder is in a fluid state. When the hose or flange moves with the corresponding oil filling or receiving vessel, the outer wall of the elastic buffer bladder is connected to the inner wall of the outer shell, and the inner wall of the elastic buffer bladder is connected to the outer wall of the inner shell. At this time, the inner shell and the outer shell begin to pull, and the elastic buffer bladder can relieve the pulling force between the inner shell and the outer shell. When installing the hose and flange, the electromagnetic coil is energized, and the magnetorheological fluid inside the elastic buffer bladder becomes semi-solid, which facilitates the connection of the flange and hose.

[0045] 3. There is a gap between the outer and inner magnetic pole pieces, which allows the inner and outer shells to sway along the axial direction. At the same time, the gap between the outer and inner magnetic pole pieces is also the maximum offset dimension of the inner and outer shells along the axial direction. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0047] Figure 2 This is a schematic diagram of a flexible joint according to an embodiment of this application;

[0048] Figure 3 This is a cross-sectional view of a flexible joint according to an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the outer and inner magnetic pole pieces in an embodiment of this application.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Box body;

[0052] 2. Filling pipeline;

[0053] 3. Hose;

[0054] 4. Flange;

[0055] 5. Flexible joint; 50. Outer shell; 51. Inner shell; 52. Electromagnetic coil array; 53. Elastic buffer bladder; 54. Outer magnetic pole piece; 55. Inner magnetic pole piece; 56. Elastic sheet; 57. Perforation; 58. Vertical block; 59. Buffer box; 510. Buffer rod; 511. Buffer plate; 512. Reset component; 513. Buffer hole. Detailed Implementation

[0056] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] This application discloses a marine methanol refueling skid. (Refer to...) Figure 1 It includes: a housing 1 for storing methanol; a refueling pipeline 2 for refueling the refueling vessel with methanol; a hose 3 for connecting the refueling vessel and the hose 3; and a flexible connection device for flexibly connecting the refueling pipeline 2 and the hose 3. In this embodiment, methanol is injected into the receiving vessel through the hose 3 via the refueling pipeline 2. The hose 3 itself can offset some of the stress caused by the swaying of the refueling vessel and the receiving vessel. The flexible connection device is used to elastically soften the connection between the refueling pipeline 2 and the hose 3. Of course, in this embodiment, the flexible connection device can also be hardened, which facilitates the alignment and connection of the hose 3 and the flange 4.

[0058] The flexible connection device includes: a flange 4, which is connected to the bunkering vessel; and a flexible joint 5, which is used to connect the flange 4 and the hose 3. The flexible joint 5 is used to connect the flange 4 and the hose 3. Therefore, when the hose 3 begins to swing as it floats with the receiving vessel, the flexible joint 5 is used to counteract the stress on the hose 3 during the floating process. This greatly reduces the stress on the flange 4 and the hose 3, as well as on the flange 4 and the receiving vessel. In other words, the flexible joint 5 achieves the adaptation of the flexible state of the hose 3 to the undulating state of the bunkering vessel through a phase change, and facilitates the docking of the hose 3 and the flange 4 in the rigid state.

[0059] The flexible joint 5 includes: an outer shell 50 connected to the flange 4; and an inner shell 51 connected to the hose 3. In this embodiment, the outer shell 50 is set to be suspended, while the inner shell 51 is located inside the outer shell 50, and the cross-sectional dimension of the inner shell 51 is smaller than that of the outer shell 50. The inner shell 51 is also provided with a channel for methanol to pass through, so that methanol can enter the inner shell 51 through the hose 3 and then be injected into the receiving vessel.

[0060] An axial buffer assembly buffers the longitudinal movement of the inner shell 51 and the outer shell 50; and a phase change buffer assembly connects the outer shell 50 and the inner shell 51. In its initial liquid state, the phase change buffer assembly achieves a dynamic connection between the hose 3 and the flange 4. After its phase change, the phase change buffer assembly achieves a positioning effect between the hose 3 and the flange 4. As the ship sways, the inner shell 51 and the hose 3 receive forces in two or more vertical directions, which in this embodiment are summarized as axial and radial forces. Of course, there is also a shear force, but because there is a gap between the inner shell 51 and the outer shell 50, all shear forces, axial forces, and radial forces can be alleviated by the flexible joint 5. The phase change buffer assembly mainly alleviates axial forces and shear forces.

[0061] The phase change buffer assembly includes: an electromagnetic coil array 52 wound around the outer wall of the outer shell 50; and an elastic buffer bladder 53 used to connect the outer shell 50 and the inner shell 51 and to fill the magnetorheological fluid. The elastic buffer bladder 53 is made of an elastic and wear-resistant material. The phase change principle of the magnetorheological fluid is as follows: when in a zero magnetic field state, magnetic particles (usually micron or nanometer-sized soft magnetic materials) are uniformly dispersed in the base fluid and move freely, and the liquid exhibits normal fluidity. When a magnetic field is applied, the particles are magnetized and attract each other, rapidly forming chain-like or columnar structures along the direction of the magnetic field. The above structures can effectively resist shear force, causing the apparent viscosity of the liquid to rise sharply and the yield stress to increase significantly, thereby changing from a Newtonian fluid to a non-Newtonian fluid with plastic or viscoelastic properties.

[0062] And shear-resistant components are used to enhance the shear force of the swaying between the outer shell 50 and the inner shell 51 along the length direction; the elastic buffer bladder 53 is set in a ring shape, and the elastic buffer bladder 53 is used to connect the outer shell 50 and the inner shell 51, and fill the gap between the outer shell 50 and the inner shell 51. During the oil injection process, it is not necessary to energize the electromagnetic coil array 52. ​​At this time, the magnetorheological fluid in the elastic buffer bladder 53 is in a fluid state. At this time, whether the hose 3 or the flange 4 is swaying with the corresponding oil injection vessel or oil receiving vessel, since the outer wall of the elastic buffer bladder 53 is connected to the inner wall of the outer shell 50, and the inner wall of the elastic buffer bladder 53 is connected to the outer wall of the inner shell 51, the inner shell 51 and the outer shell 50 begin to pull. The elastic buffer bladder 53 can relieve the pulling force between the inner shell 51 and the outer shell 50. When installing the hose 3 and the flange 4, the magnetorheological fluid in the elastic buffer bladder 53 forms a semi-solid state by energizing the electromagnetic coil, which facilitates the connection between the flange 4 and the hose 3.

[0063] The shear-resistant component includes: an outer magnetic pole piece 54, fixed to the inner peripheral wall of the elastic buffer bladder 53 near the outer shell 50; and an inner magnetic pole piece 55, fixed to the inner peripheral wall of the elastic buffer bladder 53 near the inner shell. The outer magnetic pole pieces 54 and the inner magnetic pole pieces 55 are staggered and arranged along the length direction. There are multiple outer magnetic pole pieces 54 and inner magnetic pole pieces 55. One end of the outer magnetic pole piece 54 extends into the magnetorheological fluid, and one end of the inner magnetic pole piece 55 also extends into the magnetorheological fluid. The outer magnetic pole pieces 54 and the inner magnetic pole pieces 55 are distributed along the length direction of the elastic buffer bladder 53. Of course, there is a gap between the outer magnetic pole pieces 54 and the inner magnetic pole pieces 55 to facilitate the inner shell 51 and the outer shell 50 to sway along the axial direction. At the same time, the gap between the outer magnetic pole pieces 54 and the inner magnetic pole pieces 55 is also the maximum offset size of the inner shell 51 and the outer shell 50 along the axial direction. In this embodiment, the oblique offset can be ignored.

[0064] Both the outer magnetic pole piece 54 and the inner magnetic pole piece 55 are provided with perforations 57, and elastic pieces 56 are provided at the perforations 57. The elastic pieces 56 are inclined, and the elastic pieces 56 of the inner magnetic pole piece 55 and the outer magnetic pole piece 54 are inclined relative to each other. There are multiple elastic pieces 56 arranged around the perforations 57, that is, the distance between the ends of the elastic pieces 56 gradually decreases as they move away from the perforations 57. That is, the elastic pieces 56 between two adjacent inner magnetic pole pieces 55 and two adjacent outer magnetic pole pieces 54 are arranged relative to each other. When the magnetorheological fluid begins to flow in the elastic buffer bladder 53, the magnetorheological fluid flows out from the perforations 57 or The inflow also acts as a resistance force to the flow of magnetorheological fluid, further buffering the relative displacement between the inner shell 51 and the outer shell 50. When the corresponding inner magnetic pole piece 55 and outer magnetic pole piece 54 approach each other, the magnetorheological fluid flows in from the elastic piece 56 on the corresponding inner magnetic pole piece 55, at which point the magnetorheological fluid is resisted. As the magnetorheological fluid continues to flow, it needs to flow out from the elastic piece 56 on the corresponding outer magnetic pole piece 54. At this time, it needs to overcome the cavity where multiple elastic pieces 56 approach each other, thus further increasing the resistance of the magnetorheological fluid. Ultimately, the elastic buffer bladder 53 buffers the stress.

[0065] The axial buffer assembly includes: a vertical block 58, fixedly connected to the end of the inner ring; a buffer box 59, disposed on the inner wall of the outer shell 50; a buffer rod 510, which slides out of the buffer box 59 and whose end abuts against the vertical block 58; and a speed-reducing part for reducing the movement speed of the buffer rod 510. The vertical block 58 is vertically arranged and cannot affect the movement between the outer shell 50 and the inner shell 51. The buffer box 59 also cannot affect the movement between the outer shell 50 and the inner shell 51. The buffer rod 510 is slidably disposed in the buffer and one end extends out of the buffer box 59. The buffer box 59 is provided with a sliding hole at a corresponding position. A sealing ring can be provided at the sliding hole position of the buffer box 59 to ensure that the buffer rod 510 and the sliding hole are mutually adapted and sealed for sliding. The buffer box 59 can be filled with a fluid medium. In this embodiment, water or other liquids can be selected. The speed-reducing part buffers the speed of the buffer rod 510 by increasing the resistance of the fluid medium in the buffer box 59. In this embodiment, the vertical block 58 is set to be in contact with the end of the buffer rod 510 during the shaking of the inner shell 51.

[0066] The deceleration unit includes: a buffer plate 511, slidably disposed within a buffer box 59; and a reset member 512 for resetting the buffer plate 511; one end of a buffer rod 510 is fixedly connected to the buffer plate 511; the buffer plate 511 is provided with multiple buffer holes 513; the buffer box 59 is filled with a liquid medium; the reset member 512 is a spring, and multiple springs are provided; one end of the spring contacts the corresponding inner wall of the buffer box 59, and the other end is fixedly connected to the corresponding side wall of the buffer plate 511; the buffer holes 513 are respectively disposed on both sides of the buffer rod 510; when the inner shell 51 drives the vertical block 58 to move, if the inner shell 51 moves axially, the vertical block 58 squeezes the buffer rod 510. The buffer rod 510 moves within the buffer box 59 and the spring is compressed. At the same time, the fluid is blocked from flowing out of the buffer hole 513, which also acts as a resistance, thereby buffering the impact force and positional displacement of the inner shell 51 and the outer shell 50 along the axial direction. When the buffer rod 510 separates from the vertical block 58, the buffer rod 510 slowly returns to its original position under the action of the spring. In this embodiment, the axial buffer assembly can be set to two, located on the outer shell 50 near the end of the inner shell 51.

[0067] The implementation principle of a marine methanol refueling skid in this application embodiment is as follows: When the hose 3 begins to swing as it floats with the oil receiving vessel, the flexible joint 5 is used to counteract the stress on the hose 3 during the floating process. Therefore, it greatly reduces the stress on the flange 4 and the hose 3, as well as on the flange 4 and the oil receiving vessel. That is, the flexible joint 5 achieves the adaptation of the flexible state hose 3 to the undulating state of the refueling vessel through phase change, and facilitates the docking of the hose 3 and the flange 4 in the rigid state.

[0068] During the oil filling process, there is no need to energize the electromagnetic coil array 52. ​​At this time, the magnetorheological fluid inside the elastic buffer bladder 53 is in a fluid state. When the hose 3 or flange 4 moves with the corresponding oil filling vessel or receiving vessel, the outer wall of the elastic buffer bladder 53 is connected to the inner wall of the outer shell 50, and the inner wall of the elastic buffer bladder 53 is connected to the outer wall of the inner shell 51. At this time, the inner shell 51 and the outer shell 50 begin to pull, and the elastic buffer bladder 53 can relieve the pulling force between the inner shell 51 and the outer shell 50. When installing the hose 3 and flange 4, the magnetorheological fluid inside the elastic buffer bladder 53 becomes semi-solid by energizing the electromagnetic coil, which facilitates the connection between the flange 4 and the hose 3.

[0069] There is a gap between the outer magnetic pole piece 54 and the inner magnetic pole piece 55, which facilitates the inner shell 51 and the outer shell 50 to sway along the axial direction. At the same time, the gap between the outer magnetic pole piece 54 and the inner magnetic pole piece 55 is also the maximum offset size of the inner shell 51 and the outer shell 50 along the axial direction. When the magnetorheological fluid flows in from the elastic sheet 56 on the corresponding inner magnetic pole piece 55, the magnetorheological fluid is resisted. As the magnetorheological fluid continues to flow, it needs to flow out from the elastic sheet 56 on the corresponding outer magnetic pole piece 54. At this time, it needs to overcome the cavity where multiple elastic sheets 56 are close to each other, which also has the effect of further increasing the resistance of the magnetorheological fluid. Finally, the elastic buffer bladder 53 has the effect of buffering stress.

[0070] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A marine methanol refueling skid, characterized in that, include: The container is used to store methanol; The refueling pipeline was used to refuel the refueling vessel with methanol. Hose, used to connect the refueling vessel to the connecting hose; Flexible connection device, used to achieve flexible connection between the filling pipeline and the hose; The flexible connection device includes: Flange, used to connect to the bunkering vessel; Flexible joints are used to connect flanges and hoses; The flexible joint achieves adaptation between the flexible hose and the fluctuating state of the refueling vessel through phase change, while facilitating docking of the hose and flange in the rigid state.

2. The marine methanol refueling skid according to claim 1, characterized in that, The flexible joint includes: The outer casing connects to the flange; Inner shell, connected to the hose; Axial buffer assembly to buffer the movement of the inner and outer shells along their length; and Phase change buffer assembly, used to connect the outer shell and the inner shell; The phase change buffer assembly achieves dynamic connection between the hose and the flange in its initial liquid state, and achieves positioning effect between the hose and the flange after its phase change.

3. The marine methanol refueling skid according to claim 2, characterized in that, The phase change buffer component includes: An array of electromagnetic coils is wound around the outer wall of the casing; An elastic buffer capsule, used to connect the outer shell and the inner shell and for filling with magnetorheological fluid; and Shear-resistant components are used to enhance the shear force exerted along the length of the outer and inner shells during swaying. The elastic buffer bladder is designed in a ring-shaped configuration.

4. A marine methanol refueling skid according to claim 3, characterized in that, The shear-resistant component includes: External magnetic pole pieces are fixed to the inner peripheral wall of the elastic buffer bladder near the outer shell; and The internal magnetic pole piece is fixed to the inner peripheral wall of the elastic buffer bladder near the internal cavity. The outer and inner magnetic pole pieces are arranged alternately and along the length direction.

5. A marine methanol refueling skid according to claim 4, characterized in that, Both the outer and inner magnetic pole pieces are provided with perforations, and elastic sheets are provided at the perforations.

6. A marine methanol refueling skid according to claim 5, characterized in that, The elastic sheet is inclined, and the elastic sheets of the inner magnetic pole piece and the outer magnetic pole piece are inclined relative to each other.

7. A marine methanol refueling skid according to claim 3, characterized in that, The axial buffer assembly includes: The vertical block is fixedly connected to the end of the inner ring. A buffer box is installed on the inner wall of the outer casing; The buffer rod slides out of the buffer box and its end abuts against the vertical block; and The deceleration section is used to reduce the movement speed of the buffer rod.

8. A marine methanol refueling skid according to claim 7, characterized in that, The deceleration unit includes: The buffer plate is slidably installed inside the buffer box; and Reset component, used to reset the buffer plate; One end of the buffer rod is fixedly connected to the buffer plate, which has multiple buffer holes, and the buffer tank is filled with liquid medium.

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