LNG (Liquefied Natural Gas) fuel storage tank for dual-fuel ship

Abstract

The utility model relates to the technical field of fuel storage tanks, and discloses a dual-fuel ship LNG fuel storage tank which comprises a fuel storage tank body, a hydraulic capacity meter is arranged on the front face of the fuel storage tank body, the top of the fuel storage tank body is fixedly connected with an LNG fuel input pipeline, the top of the fuel storage tank body is fixedly connected with a diesel oil input pipeline, and the diesel oil input pipeline is fixedly connected with a diesel oil output pipeline. Quick-release sealing mechanisms are arranged on the left side and the right side of the fuel storage tank body, through the arranged quick-release sealing mechanisms, a push rod is manually pushed upwards, so that a clamping block of the push rod is completely separated from connection between connecting sleeves, then a sealing cover is lifted outwards, and then connection between the sealing cover and the connecting sleeves can be quickly released; according to the fuel storage tank, the connection between the sealing cover and the fuel storage tank main body can be quickly released by a worker, the time required for disassembly is shortened in the disassembly process, the work complexity of the worker is further reduced, and the subsequent cleaning work on the interior of the fuel storage tank main body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel storage tanks, in particular to a dual-fuel ship LNG fuel storage tank. Background Art

[0002] With the tightening of Maritime Organization (IMO) emission standards and adjustments to national energy strategies, LNG is beginning to be used as a marine engine fuel on inland vessels. As a clean fuel, LNG significantly reduces emissions of sulfur dioxide, dust, carbon dioxide, and nitrogen oxides compared to diesel. Furthermore, with the continuous development and improvement of dual-fuel marine technology, the design, manufacture, and installation of LNG fuel storage tanks will place greater emphasis on safety, reliability, and cost-effectiveness.

[0003] According to a large-scale dual-fuel ship LNG fuel storage tank disclosed on the patent website (authorization announcement CN214001963U), "A large-scale dual-fuel ship LNG fuel storage tank includes a fuel storage tank body, a support frame is provided at the bottom of the fuel storage tank body, and sealing valves are fixedly connected to the two sides of the fuel storage tank body by bolts. A diesel storage tank and an LNG storage tank are respectively provided inside the fuel storage tank body. A diesel feed port is provided on the top of the diesel storage tank, and a diesel feed connector is provided at the upper end of the diesel feed port. The diesel feed connector is sealed and connected to a diesel input pipeline. The top of the LNG storage tank is provided with an LNG fuel feed port."

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] During use, the utility model uses the sealing valves provided on both sides of the fuel storage tank body to open the sealing valves by screwing the bolts, thereby cleaning the fuel storage tank body and preventing it from being blocked by impurities. However, in actual use, when the device is used to clean the fuel storage tank body at a later stage, it is necessary to use tools to continuously screw the bolts between the fuel storage tank body and the sealing valves to release the connection between the sealing valves and the fuel storage tank body, which greatly increases the tediousness of the staff's work during the disassembly process, making it inconvenient to quickly disassemble the sealing valves and the fuel tank body, thereby increasing the time required for disassembly and making it inconvenient to perform speed measurement and cleaning work on the inside of the fuel tank body. Therefore, it is necessary to improve a dual-fuel ship LNG fuel storage tank. Utility Model Content

[0006] The purpose of the present invention is to provide a dual-fuel ship LNG fuel storage tank to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dual-fuel ship LNG fuel storage tank, comprising a fuel storage tank body, a hydraulic capacity gauge is provided on the front of the fuel storage tank body, an LNG fuel input pipe is fixedly connected to the top of the fuel storage tank body, a diesel input pipe is fixedly connected to the top of the fuel storage tank body, quick-release sealing mechanisms are provided on the left and right sides of the fuel storage tank body, an oil outlet mechanism is provided inside the quick-release sealing mechanism, a diesel delivery pipe is fixedly connected to the bottom of the fuel storage tank body, an LNG fuel delivery pipe is fixedly connected to the bottom of the fuel tank body, the LNG fuel input pipe and the diesel input pipe are fixedly connected to one end away from the fuel storage tank body with a flange tee, the diesel delivery pipe and the LNG fuel delivery pipe are fixedly connected to one end away from the fuel tank body with a ball valve, and a flange joint is fixedly connected to the left side of the ball valve;

[0008] The quick-release sealing mechanism includes a quick-release assembly and a sealing assembly, wherein the sealing assembly is arranged outside the quick-release assembly;

[0009] The sealing assembly includes a connecting sleeve, which is fixedly connected to the left and right sides of the fuel storage tank body. A sealing sleeve is slidably connected inside the connecting sleeve. A spring three is fixedly connected between the sealing sleeve and the connecting sleeve. A sealing ring is sleeved on the outside of the sealing sleeve to facilitate sealing at the connection between the fuel storage tank body and the sealing cover to prevent fuel leakage.

[0010] Preferably, grooves are provided at corresponding positions of the sealing sleeve and the connecting sleeve, and the sealing sleeve is slidably connected in the groove to facilitate the abutment of the sealing ring with the sealing cover.

[0011] Preferably, the quick-release assembly includes a sealing cover, which is inserted into the inner side of the connecting sleeve, the sealing cover is internally slidably connected to a limiting block, the limiting block is internally movably connected to a limiting column, the limiting column is externally fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a push rod, the limiting block is externally fixedly connected to a connecting column, the connecting column is externally fixedly connected to a clamping block, a spring 1 is fixedly connected between the clamping block and the sealing cover, a block is internally slidably connected to the sealing cover, and a spring 2 is fixedly connected between the block and the sealing cover, so as to facilitate the later disassembly and cleaning of the interior of the fuel storage tank body.

[0012] Preferably, the bottom of the stopper abuts against the top of the push rod, and a through groove is provided at the corresponding position of the clamping block and the connecting sleeve, and the clamping block is inserted into the through groove, so as to quickly fix the sealing cover and the fuel storage tank body.

[0013] Preferably, an oblique groove is provided at the corresponding positions of the limit block and the limit column, and the limit column is movably connected in the oblique groove, and the connecting plate is slidably connected to the inside of the sealing cover, and the outside of the sealing cover is in contact with the outside of the sealing ring, so as to simultaneously drive the block to move relatively inward.

[0014] Preferably, the oil outlet mechanism includes a fixing bolt, which is threadedly connected to the inside of the sealing cover, and the fixing bolt is rotatably connected to a connecting plate on the outside, and the connecting plate is fixedly connected to an oil distribution rack on the outside, and the sealing cover is fixedly connected to a limit strip on the inside, so as to facilitate the release of internal pressure of the fuel storage tank body during subsequent use.

[0015] Preferably, grooves are provided at positions corresponding to the limit bar and the oil distribution rack, and the oil distribution rack is slidably connected to the outside of the limit bar, so as to facilitate communication between the interior of the fuel storage tank body and the outside.

[0016] Compared with the existing technology, the present invention provides a dual-fuel ship LNG fuel storage tank with the following beneficial effects:

[0017] 1. The dual-fuel ship LNG fuel storage tank is provided with a quick-release sealing mechanism. By manually pushing the push rod upward, the block is completely separated from the connection between the connecting sleeve, and then the sealing cover is pulled outward to quickly release the connection between the sealing cover and the connecting sleeve, so that the staff can quickly release the connection between the sealing cover and the fuel storage tank body, and reduce the time required for disassembly during the disassembly process, further reducing the tediousness of the staff's work, making it convenient for the subsequent cleaning work inside the fuel storage tank body.

[0018] 2. The dual-fuel ship LNG fuel storage tank is provided with an oil outlet mechanism. With the help of tools or manual rotation of the fixing bolts, the fixing bolts are separated from the inside of the sealing cover. During the separation process, the connecting plate is driven to move outward, and the connecting plate simultaneously drives the oil distribution frame to move outward along the limit bar guide, so that the external air pressure is connected to the interior of the fuel storage tank body, so that the internal pressure of the fuel storage tank body can be released during subsequent use, thereby avoiding accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2This is a schematic diagram of the appearance and structure of the quick-release sealing mechanism of the utility model;

[0022] Figure 3 This is a schematic diagram of the expanded structure of the quick-release assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the expanded structure of the sealing component of the utility model;

[0024] Figure 5 This is a schematic diagram of the appearance and structure of the oil outlet mechanism of the utility model.

[0025] In the figure: 1. Fuel storage tank body; 2. Hydraulic capacity gauge; 3. LNG fuel input pipeline; 4. Diesel fuel input pipeline; 5. Flange tee; 6. Quick-release sealing mechanism; 7. Oil outlet mechanism; 8. Diesel delivery pipeline; 9. LNG fuel delivery pipeline; 10. Ball valve; 11. Flange joint; 61. Quick-release assembly; 62. Sealing assembly; 611. Sealing cover; 612. Limit block; 613. Limit column; 614. Connecting plate; 615. Push rod; 616. Connecting column; 617. Spring 1; 618. Block; 619. Stopper; 6110. Spring 2; 621. Connecting sleeve; 622. Spring 3; 623. Sealing sleeve; 624. Sealing ring; 71. Fixing bolt; 72. Connecting plate; 73. Limit strip; 74. Oil distribution rack. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] Example 1:

[0029] See also Figure 1-5The utility model provides a technical solution: a dual-fuel ship LNG fuel storage tank, comprising a fuel storage tank body 1, a hydraulic capacity gauge 2 is provided on the front of the fuel storage tank body 1, an LNG fuel input pipe 3 is fixedly connected to the top of the fuel storage tank body 1, a diesel input pipe 4 is fixedly connected to the top of the fuel storage tank body 1, quick-release sealing mechanisms 6 are provided on the left and right sides of the fuel storage tank body 1, an oil outlet mechanism 7 is provided inside the quick-release sealing mechanism 6, a diesel delivery pipe 8 is fixedly connected to the bottom of the fuel storage tank body 1, and an LNG fuel delivery pipe 9 is fixedly connected to the bottom of the fuel tank body 1, the LNG fuel input pipe 3 and the diesel input pipe 4 are fixedly connected to a flange tee 5 at one end away from the fuel storage tank body 1, the diesel delivery pipe 8 and the LNG fuel delivery pipe 9 are fixedly connected to one end away from the fuel tank body 1, and a flange joint 11 is fixedly connected to the left side of the ball valve 10;

[0030] The quick-release sealing mechanism 6 includes a quick-release assembly 61 and a sealing assembly 62 , wherein the sealing assembly 62 is arranged outside the quick-release assembly 61 ;

[0031] The sealing assembly 62 includes a connecting sleeve 621, which is fixedly connected to the left and right sides of the fuel storage tank body 1. A sealing sleeve 623 is slidably connected inside the connecting sleeve 621. A spring 622 is fixedly connected between the sealing sleeve 623 and the connecting sleeve 621. A sealing ring 624 is sleeved on the outside of the sealing sleeve 623 to facilitate sealing at the connection between the fuel storage tank body 1 and the sealing cover 611 to prevent fuel leakage.

[0032] Furthermore, grooves are provided at corresponding positions of the sealing sleeve 623 and the connecting sleeve 621 , and the sealing sleeve 623 is slidably connected in the grooves, so that the sealing ring 624 thereof is in contact with the sealing cover 611 .

[0033] Furthermore, the quick-release assembly 61 includes a sealing cover 611, which is inserted into the inner side of the connecting sleeve 621. The sealing cover 611 is internally slidably connected to the limiting block 612, and the limiting block 612 is internally movably connected to the limiting column 613. The limiting column 613 is externally fixedly connected to a connecting plate 614, and the bottom of the connecting plate 614 is fixedly connected to a push rod 615. The limiting block 612 is externally fixedly connected to a connecting column 616, and the connecting column 616 is externally fixedly connected to a clamping block 618. A spring 1 617 is fixedly connected between the clamping block 618 and the sealing cover 611. The sealing cover 611 is internally slidably connected to a stopper 619, and a spring 2 6110 is fixedly connected between the stopper 619 and the sealing cover 611, so as to facilitate the later disassembly and cleaning of the interior of the fuel storage tank body 1.

[0034] Furthermore, the bottom of the stopper 619 abuts against the top of the push rod 615, and a through groove is provided at the corresponding position of the block 618 and the connecting sleeve 621, and the block 618 is inserted into the through groove, so as to quickly fix the sealing cover 611 and the fuel storage tank body 1.

[0035] Furthermore, an oblique groove is provided at the corresponding position of the limit block 612 and the limit column 613, and the limit column 613 is movably connected in the oblique groove, and the connecting plate 614 is slidably connected to the inside of the sealing cover 611, and the outside of the sealing cover 611 is in contact with the outside of the sealing ring 624, so as to simultaneously drive the block 618 to move relatively inward.

[0036] Example 2:

[0037] See also Figure 5 , and combined with Example 1, it is further obtained that the oil outlet mechanism 7 includes a fixing bolt 71, the fixing bolt 71 is threadedly connected to the inside of the sealing cover 611, the fixing bolt 71 is rotatably connected to the outside of the connecting plate 72, the connecting plate 614 is fixedly connected to the outside of the oil distribution frame 74, and the sealing cover 611 is fixedly connected to the inside of the limiting strip 73, which is convenient for releasing the internal pressure of the fuel storage tank body 1 during subsequent use.

[0038] Furthermore, grooves are provided at corresponding positions of the limiting strip 73 and the oil distribution rack 74 , and the oil distribution rack 74 is slidably connected to the outside of the limiting strip 73 , so as to facilitate communication between the interior of the fuel storage tank body 1 and the outside.

[0039] During actual operation, when the device is used, first, and when it is necessary to disassemble and clean the inside of the fuel storage tank body 1 later, the push rod 615 is manually pushed upward through the quick-release sealing mechanism 6, and the push rod 615 drives the connecting plate 614 to move upward, and then the connecting plate 614 drives the limit column 613 to move upward, and during the upward movement of the limit column 613, since the limit column 613 and the limit block 612 are provided with inclined grooves at the corresponding positions, the limit column 613 drives the limit block 612 to move inward relative to each other during the upward movement, and then synchronously drives the connecting column 616 to move inward, thereby driving the block 618 to move inward relative to each other, so that the block 618 is completely separated from the connection between the connecting sleeve 621, and then the sealing cover 611 is pulled outward to quickly release the connection between the sealing cover 611 and the connecting sleeve 621. , so that its staff can quickly release the connection between the sealing cover 611 and the fuel storage tank body 1, and during the connection between the sealing cover 611 and the fuel storage tank body 1, the spring three 622 elastic force is used to drive the sealing sleeve 623 to move outward, and the sealing sleeve 623 drives the sealing ring 624 to move outward, so that the sealing ring 624 abuts against the sealing cover 611, thereby improving the sealing effect between the fuel storage tank body 1 and the sealing cover 611 connection, thereby preventing fuel leakage, and then through the provided oil outlet mechanism 7, with the help of tools or manual rotation of the fixing bolt 71, so that the fixing bolt 71 is separated from the inside of the sealing cover 611, and in the process of separation, the connecting plate 72 is driven to move outward, and then the connecting plate 72 synchronously drives the oil distribution frame 74 to move outward along the limit bar 73, so that the external air pressure is communicated with the inside of the fuel storage tank body 1.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A dual-fuel ship LNG fuel storage tank, comprising a fuel storage tank body (1), characterized in that: The front of the fuel storage tank body (1) is provided with a hydraulic capacity gauge (2), the top of the fuel storage tank body (1) is fixedly connected to an LNG fuel input pipeline (3), the top of the fuel storage tank body (1) is fixedly connected to a diesel input pipeline (4), the left and right sides of the fuel storage tank body (1) are provided with quick-release sealing mechanisms (6), the inner side of the quick-release sealing mechanism (6) is provided with an oil outlet mechanism (7), the bottom of the fuel storage tank body (1) is fixedly connected to a diesel delivery pipeline (8), the bottom of the fuel storage tank body (1) is fixedly connected to an LNG fuel delivery pipeline (9), the ends of the LNG fuel input pipeline (3) and the diesel input pipeline (4) away from the fuel storage tank body (1) are fixedly connected to a flange tee (5), the ends of the diesel delivery pipeline (8) and the LNG fuel delivery pipeline (9) away from the fuel storage tank body (1) are fixedly connected to a ball valve (10), and the left side of the ball valve (10) is fixedly connected to a flange joint (11); The quick-release sealing mechanism (6) comprises a quick-release assembly (61) and a sealing assembly (62), wherein the sealing assembly (62) is arranged outside the quick-release assembly (61); The sealing assembly (62) comprises a connecting sleeve (621), the connecting sleeve (621) being fixedly connected to the left and right sides of the fuel storage tank body (1), a sealing sleeve (623) being slidably connected inside the connecting sleeve (621), a spring (622) being fixedly connected between the sealing sleeve (623) and the connecting sleeve (621), and a sealing ring (624) being sleeved outside the sealing sleeve (623).

2. The dual-fuel ship LNG fuel storage tank according to claim 1, characterized in that: Grooves are provided at corresponding positions of the sealing sleeve (623) and the connecting sleeve (621), and the sealing sleeve (623) is slidably connected in the grooves.

3. The dual-fuel ship LNG fuel storage tank according to claim 1, characterized in that: The quick-release assembly (61) includes a sealing cover (611), the sealing cover (611) is inserted into the inner side of the connecting sleeve (621), the sealing cover (611) is internally slidably connected to a limiting block (612), the limiting block (612) is internally movably connected to a limiting column (613), the limiting column (613) is externally fixedly connected to a connecting plate (614), the bottom of the connecting plate (614) is fixedly connected to a push rod (615), the limiting block (612) is externally fixedly connected to a connecting column (616), the connecting column (616) is externally fixedly connected to a clamping block (618), a spring 1 (617) is fixedly connected between the clamping block (618) and the sealing cover (611), a stopper (619) is internally slidably connected to the sealing cover (611), and a spring 2 (6110) is fixedly connected between the stopper (619) and the sealing cover (611).

4. The dual-fuel ship LNG fuel storage tank according to claim 3, characterized in that: The bottom of the stopper (619) abuts against the top of the push rod (615), and a through slot is provided at the corresponding position of the clamping block (618) and the connecting sleeve (621), and the clamping block (618) is inserted into the through slot.

5. The dual-fuel ship LNG fuel storage tank according to claim 3, characterized in that: An oblique groove is provided at corresponding positions of the limiting block (612) and the limiting column (613), and the limiting column (613) is movably connected in the oblique groove, and the connecting plate (614) is slidably connected to the inside of the sealing cover (611), and the outside of the sealing cover (611) is in contact with the outside of the sealing ring (624).

6. The dual-fuel ship LNG fuel storage tank according to claim 3, characterized in that: The oil outlet mechanism (7) comprises a fixing bolt (71), the fixing bolt (71) being threadedly connected to the interior of the sealing cover (611), the fixing bolt (71) being rotatably connected to a connecting plate (72) on the exterior, the connecting plate (614) being fixedly connected to an oil distribution frame (74) on the exterior, and the sealing cover (611) being fixedly connected to a limiting strip (73) on the interior.

7. The dual-fuel ship LNG fuel storage tank according to claim 6, characterized in that: The limiting strip (73) and the oil distribution rack (74) are provided with grooves at corresponding positions, and the oil distribution rack (74) is slidably connected to the outside of the limiting strip (73).

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