Gas collecting device of LNG (Liquefied Natural Gas) ship

Abstract

The utility model belongs to the technical field of ships, and particularly relates to a gas collecting device of an LNG (liquefied natural gas) ship, which comprises a base, a collecting tank is fixedly connected to the upper end of the base, a fixing frame is fixedly connected to the outer side of the collecting tank, the fixing frame is fixedly connected with the base, a gas inlet is formed in the collecting tank, a gas outlet is formed in the collecting tank, and a gas outlet is formed in the gas outlet. The air inlet and the air outlet are both in contact with connecting pipes. By designing the connecting shell, the screw rod, the handle, the rotating plate, the fixing block, the annular groove and other components, the rotating screw rod and the connecting shell generate threaded motion, the screw rod rotates to drive the semicircular sealing sleeve and other components to move, and the semicircular sealing sleeve moves to make contact with the air inlet, the air outlet and the connecting pipe; therefore, the joint of the air inlet and the connecting pipe and the joint of the air outlet and the connecting pipe are sealed, and air leakage at the joint of the air inlet and the connecting pipe and at the joint of the air outlet and the connecting pipe on the device is prevented.

Description

Technical Field

[0001] This utility model relates to the field of marine technology, specifically to a gas collection device for LNG ships. Background Technology

[0002] LNG ships are vessels that use LNG (liquefied natural gas) as their fuel. Against the backdrop of a global push for green environmental protection and sustainable development, the shipping industry, as a crucial pillar of international trade, urgently needs to transform itself through energy conservation and emission reduction. LNG ships, with their unique advantages, are becoming a pioneering force leading the shipping industry towards a green future. As LNG is the primary fuel for ships, it is typically stored using specialized gas collection systems. For example, utility model patent CN220332890U discloses a gas collection device for inland LNG vessels. This device includes a main body, with a combustible gas detector fixedly mounted on its top. Two sets of mounting bases are also fixedly mounted on the top of the main body. This gas collection device for inland LNG vessels uses a baffle to deflect impacting objects, preventing them from directly impacting the main body and providing protection. A telescopic rod combined with a spring can reduce the impact force. When the baffle is impacted, the cylinder can rotate in conjunction with an L-shaped rod, a sliding rod, and a spiral groove. The driving bevel gear and the driven bevel gear can drive the rotating rod and the protective cover to rotate, causing the two sets of protective covers to rotate and fit together, protecting the combustible gas detector from impact and further improving the protective effect. However, in the existing technology, the device lacks a sealing mechanism, making it difficult to seal the connections between the air inlet and the connecting pipe, as well as the air outlet and the connecting pipe. This leads to easy gas leakage at these connections. Furthermore, the device lacks a pressure relief mechanism, making it difficult to release pressure when it becomes too high, which could compromise the safety of the device. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to provide a gas collection device for LNG ships, which solves the problems of the lack of a sealing mechanism, the inconvenience of sealing the connection between the inlet and the connecting pipe, and the inconvenience of sealing the connection between the outlet and the connecting pipe, which makes it easy for gas to leak at the connection between the inlet and the connecting pipe, and the lack of a pressure relief mechanism, which makes it difficult to relieve pressure when the device pressure is too high, thus making the use of the device unsafe.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gas collection device for LNG ships, comprising a base, a collection tank fixedly connected to the upper end of the base, a fixing frame fixedly connected to the outer side of the collection tank, the fixing frame being fixedly connected to the base, an air inlet provided on the collection tank, an air outlet provided on the collection tank, a connecting pipe contacting both the air inlet and the air outlet, a sealing mechanism provided on the outer side of both the air inlet and the air outlet, and a pressure relief mechanism provided on the collection tank.

[0005] Preferably, the sealing mechanism includes a connecting shell. A connecting shell is fixedly connected to the outer sides of both the air inlet and outlet. The connecting shell contacts the connecting pipe. A screw is threadedly connected to the inside of the connecting shell. A rotating plate is fixedly connected to the screw. A fixing block is contacted on the side of the rotating plate away from the screw. An annular groove is formed inside the fixing block. A semi-circular sleeve contacts the inside of the connecting shell. The semi-circular sleeve is fixedly connected to the fixing block. A guide groove is formed inside the connecting shell. A semi-circular sealing sleeve contacts the inside of the connecting shell. A semi-circular sealing sleeve is fixedly connected to the semi-circular sleeve. The semi-circular sealing sleeve contacts the connecting pipe. Both the air inlet and outlet contact the semi-circular sealing sleeve. By rotating the screw and connecting shell, a threaded movement occurs. The screw rotation drives the semi-circular sealing sleeve and other components to move. The semi-circular sealing sleeve moves and contacts the air inlet, outlet, and connecting pipe, thereby sealing the connection between the air inlet and connecting pipe, and the connection between the outlet and connecting pipe, preventing gas leakage at these points.

[0006] Preferably, a handle is fixedly connected to the screw. The handle is made of iron, which makes it more durable.

[0007] Preferably, a rotating block is slidably connected inside the annular groove, and the rotating block is fixedly connected to the rotating plate. By designing the rotating block, it can slide within the annular groove.

[0008] Preferably, a guide block is slidably connected inside the guide groove, and the guide block is fixedly connected to the semi-circular sleeve. By designing the guide block, the semi-circular sleeve can be guided.

[0009] Preferably, the pressure relief mechanism includes a pressure gauge, which is installed inside the collection tank. A gas storage shell is fixedly connected to the upper end of the collection tank. An outlet pipe is installed inside the collection tank and fixedly connected to the gas storage shell. A cylinder is fixedly connected to the upper end of the gas storage shell. A cylinder rod is installed at the lower end of the cylinder and slidably connected to the gas storage shell. A sealing sleeve is fixedly fitted inside the gas storage shell and slidably connected to the cylinder rod. A connecting block is fixedly connected to the lower end of the cylinder rod, and a stop block is fixedly connected to the outer side of the connecting block. The stop block contacts the outlet pipe and the gas storage shell. When the pressure in the collection tank is too high according to the pressure gauge, the stop block moves upward, separating from the outlet pipe, and the gas is discharged from the outlet pipe into the gas storage shell, thereby relieving pressure and ensuring safe operation of the device.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model designs components such as a connecting shell, screw, handle, rotating plate, fixing block, and annular groove. The rotating screw causes threaded movement between the connecting shell and the screw, which in turn drives the semi-circular sealing sleeve to move. The semi-circular sealing sleeve moves and contacts the air inlet, air outlet, and connecting pipe, thereby sealing the connection between the air inlet and the connecting pipe, and the connection between the air outlet and the connecting pipe, preventing gas leakage at the connection between the air inlet and the connecting pipe, and the connection between the air outlet and the connecting pipe.

[0012] 2. This utility model, through the design of components such as a pressure display gauge, a gas storage shell, a gas outlet pipe, a cylinder, a cylinder rod, and a sealing sleeve, allows the pressure display gauge to move upwards to collect the pressure in the tank when the pressure is too high. This causes the upward-moving stop to separate from the gas outlet pipe, and the gas is discharged from the gas outlet pipe into the gas storage shell, thereby relieving the pressure of the device and ensuring its safe use. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Partial three-dimensional diagram of the structure;

[0015] Figure 3 This utility model Figure 2 Enlarged view of the connecting pipe;

[0016] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0017] Figure 5 This utility model Figure 2 Enlarged view of point B.

[0018] In the diagram: 1. Base; 2. Collection tank; 3. Fixing frame; 4. Air inlet; 5. Air outlet; 6. Connecting pipe; 7. Sealing mechanism; 71. Connecting shell; 72. Screw; 73. Handle; 74. Rotating plate; 75. Fixing block; 76. Annular groove; 77. Rotating block; 78. Semi-circular sleeve; 79. Guide groove; 710. Guide block; 711. Semi-circular sealing sleeve; 8. Pressure relief mechanism; 81. Pressure display gauge; 82. Air storage shell; 83. Air outlet pipe; 84. Cylinder; 85. Cylinder rod; 86. Sealing sleeve; 87. Connecting block; 88. Stop block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 A gas collection device for an LNG ship includes a base 1, a collection tank 2 fixedly connected to the upper end of the base 1, a fixing frame 3 fixedly connected to the outside of the collection tank 2, the fixing frame 3 being fixedly connected to the base 1, an air inlet 4 and an air outlet 5 provided on the collection tank 2, a connecting pipe 6 contacting both the air inlet 4 and the air outlet 5, a sealing mechanism 7 provided on the outside of both the air inlet 4 and the air outlet 5, and a pressure relief mechanism 8 provided on the collection tank 2.

[0021] Please see Figure 1 , Figure 3 , Figure 4The sealing mechanism 7 includes a connecting shell 71. The connecting shell 71 is fixedly connected to the outer sides of both the air inlet 4 and the air outlet 5. The connecting shell 71 contacts the connecting pipe 6. A screw 72 is threadedly connected to the inside of the connecting shell 71. A handle 73 is fixedly connected to the screw 72. The handle 73 is made of iron, which makes it more durable. A rotating plate 74 is fixedly connected to the screw 72. A fixing block 75 is in contact with the side of the rotating plate 74 away from the screw 72. An annular groove 76 is formed inside the fixing block 75. A rotating block 77 is slidably connected inside the annular groove 76 and fixedly connected to the rotating plate 74. The rotating block 77 is designed to slide within the annular groove 76. A semi-circular sleeve 78 is in contact inside the connecting shell 71 and fixedly connected to the fixing block 75. A guide groove 79 is formed inside the connecting shell 71. A guide block 710 is slidably connected inside the guide groove 79. The guide block 710 is fixedly connected to the semi-circular sleeve 78. By designing the guide block 710, the semi-circular sleeve 78 can be guided. The interior of the connecting shell 71 is in contact with a semi-circular sealing sleeve 711. The semi-circular sealing sleeve 711 is fixedly connected to the semi-circular sleeve 78. The semi-circular sealing sleeve 711 is in contact with the connecting pipe 6. The air inlet 4 and the air outlet 5 are both in contact with the semi-circular sealing sleeve 711. By rotating the screw 72, a threaded movement occurs between the screw 72 and the connecting shell 71. The rotation of the screw 72 drives the semi-circular sealing sleeve 711 and other components to move. The semi-circular sealing sleeve 711 moves to contact the air inlet 4, the air outlet 5 and the connecting pipe 6, thereby sealing the connection between the air inlet 4 and the connecting pipe 6, and the connection between the air outlet 5 and the connecting pipe 6, preventing gas leakage at the connection between the air inlet 4 and the connecting pipe 6, and the connection between the air outlet 5 and the connecting pipe 6.

[0022] Please see Figure 1 , Figure 2 , Figure 5 The pressure relief mechanism 8 includes a pressure gauge 81. The pressure gauge 81 is installed inside the collection tank 2. A gas storage shell 82 is fixedly connected to the upper end of the collection tank 2. An outlet pipe 83 is installed inside the collection tank 2 and fixedly connected to the gas storage shell 82. A cylinder 84 is fixedly connected to the upper end of the gas storage shell 82. A cylinder rod 85 is installed at the lower end of the cylinder 84 and slidably connected to the gas storage shell 82. A sealing sleeve 86 is fixedly fitted inside the gas storage shell 82. The sleeve 86 is slidably connected to the cylinder rod 85. A connecting block 87 is fixedly connected to the lower end of the cylinder rod 85. A stop block 88 is fixedly connected to the outside of the connecting block 87. The stop block 88 is in contact with the outlet pipe 83 and the gas storage shell 82. When the pressure of the upward collection tank 2 is too high, the stop block 88 moves upward and separates from the outlet pipe 83. The gas is discharged from the outlet pipe 83 into the gas storage shell 82, thereby depressurizing the device and making the device safe to use.

[0023] The specific implementation process of this utility model is as follows: Before using the device, move the two connecting pipes 6, one to a designated position inside the air inlet 4 and the other to a designated position inside the air outlet 5. Then rotate the handle 73. The rotation of the handle 73 drives the screw 72 to rotate. The rotation of the screw 72 causes a threaded movement with the connecting shell 71, which in turn causes the screw 72 to have a relative displacement. The rotation of the screw 72 drives the rotating plate 74 and the fixed block 75 to move. The movement of the fixed block 75 drives the semi-circular sleeve 78 to move. The movement of the semi-circular sleeve 78 drives the guide block 710 and the semi-circular sealing sleeve 711 to move. The semi-circular sealing sleeve 711 moves and contacts the air inlet 4, the air outlet 5 and the connecting pipe 6, thereby sealing the connection between the air inlet 4 and the connecting pipe 6 and the connection between the air outlet 5 and the connecting pipe 6, preventing gas leakage at the connection between the air inlet 4 and the connecting pipe 6 and the connection between the air outlet 5 and the connecting pipe 6.

[0024] When the pressure in the collection tank 2 is too high, the cylinder 84 is activated. The cylinder 84 drives the cylinder rod 85 to move upward. The upward movement of the cylinder rod 85 causes the connecting block 87 to move upward. The upward movement of the connecting block 87 causes the stop block 88 to move upward. The stop block 88 moves upward and separates from the outlet pipe 83. Gas is discharged from the outlet pipe 83 into the gas storage shell 82, thereby depressurizing the device and ensuring its safe use. When the pressure in the collection tank 2 reaches the specified standard, the cylinder 84 is activated again. The cylinder 84 drives the cylinder rod 85 to move downward. The downward movement of the cylinder rod 85 causes the connecting block 87 to move downward. The downward movement of the connecting block 87 causes the stop block 88 to move downward. The stop block 88 moves downward and contacts the specified position of the outlet pipe 83, causing the device to stop depressurizing.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas collection device for an LNG ship, comprising a base (1), characterized in that: A collection tank (2) is fixedly connected to the upper end of the base (1). A fixing frame (3) is fixedly connected to the outside of the collection tank (2). The fixing frame (3) is fixedly connected to the base (1). An air inlet (4) is provided on the collection tank (2). An air outlet (5) is provided on the collection tank (2). A connecting pipe (6) is in contact with both the air inlet (4) and the air outlet (5). A sealing mechanism (7) is provided on the outside of both the air inlet (4) and the air outlet (5). A pressure relief mechanism (8) is provided on the collection tank (2).

2. The gas collection device for an LNG ship according to claim 1, characterized in that: The sealing mechanism (7) includes a connecting shell (71). The connecting shell (71) is fixedly connected to the outer sides of both the air inlet (4) and the air outlet (5). The connecting shell (71) contacts the connecting pipe (6). A screw (72) is threadedly connected to the inside of the connecting shell (71). A rotating plate (74) is fixedly connected to the screw (72). A fixing block (75) is contacted on the side of the rotating plate (74) away from the screw (72). An annular groove (76) is formed inside the fixing block (75). The interior of the connecting shell (71) is in contact with a semi-circular sleeve (78), which is fixedly connected to the fixing block (75). The interior of the connecting shell (71) is provided with a guide groove (79). The interior of the connecting shell (71) is in contact with a semi-circular sealing sleeve (711). The semi-circular sealing sleeve (711) is fixedly connected to the semi-circular sleeve (78). The semi-circular sealing sleeve (711) is in contact with the connecting pipe (6). The air inlet (4) and the air outlet (5) are both in contact with the semi-circular sealing sleeve (711).

3. A gas collection device for an LNG ship according to claim 2, characterized in that: A handle (73) is fixedly connected to the screw (72), and the handle (73) is made of iron.

4. A gas collection device for an LNG ship according to claim 2, characterized in that: A rotating block (77) is slidably connected inside the annular groove (76), and the rotating block (77) is fixedly connected to the rotating plate (74).

5. A gas collection device for an LNG ship according to claim 2, characterized in that: The guide groove (79) is slidably connected to a guide block (710), and the guide block (710) is fixedly connected to a semi-circular sleeve (78).

6. A gas collection device for an LNG ship according to claim 1, characterized in that: The pressure relief mechanism (8) includes a pressure display gauge (81). The pressure display gauge (81) is installed inside the collection tank (2). A gas storage shell (82) is fixedly connected to the upper end of the collection tank (2). An air outlet pipe (83) is installed inside the collection tank (2). The air outlet pipe (83) is fixedly connected to the gas storage shell (82). A cylinder (84) is fixedly connected to the upper end of the gas storage shell (82). A cylinder rod (85) is installed at the lower end of the cylinder (84). The cylinder rod (85) is slidably connected to the air reservoir (82). A sealing sleeve (86) is fixedly fitted inside the air reservoir (82). The sealing sleeve (86) is slidably connected to the cylinder rod (85). A connecting block (87) is fixedly connected to the lower end of the cylinder rod (85). A stop block (88) is fixedly connected to the outer side of the connecting block (87). The stop block (88) contacts the air outlet pipe (83) and the air reservoir (82).

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