Marine double-layer spiral duct connecting structure

Abstract

The utility model relates to the technical field of connecting structures, in particular to a marine double-layer spiral duct connecting structure. The double-layer spiral duct air tightness detection device comprises flange plates connected to the two ends of a double-layer spiral duct in a welded mode, and is characterized in that bolts, gaskets, sealing gaskets and a pre-fixing assembly are arranged between the two flange plates, and air tightness detection assemblies are arranged on the arc surfaces of the flange plates. The pre-fixing assembly comprises two identical fixing columns fixedly connected to the left end of the flange plate on one side, and triangular blocks are slidably inserted into the two sides of the arc face of each fixing column. And on the other hand, when a worker supports the double-layer spiral air pipe, the double-layer spiral air pipe may shake, dislocation is caused, alignment needs to be conducted again, the installation progress is affected, and on the other hand, the sealing effect between the double-layer spiral air pipe may be affected due to the fact that a sealing gasket deviates on a flange plate during shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of connection structures, in particular to a connection structure for a marine double-layer spiral air duct. Background Technique

[0002] The connection structure is used for connecting and fixing between marine double-layer spiral air ducts. The connection structure consists of flange plates, bolts, gaskets, and sealing gaskets welded to both ends of the double-layer spiral air ducts. When using the connection structure to fixedly connect the marine double-layer spiral air ducts, sealant is applied on the flange plate at one end of a double-layer spiral air duct, then the sealing gasket is covered and sealant is applied again. Then, the other double-layer spiral air duct is dragged so that the flange plate at one end abuts against the sealing gasket, and the mounting holes on the two flange plates are horizontally and vertically aligned. Finally, they are tightened and fixed with bolts and gaskets.

[0003] The inventor found in daily work that when the connection structure is in use, since it is necessary to keep the mounting holes on the two flange plates horizontally and vertically aligned when connecting and fixing the double-layer spiral air ducts, the worker may shake when supporting the double-layer spiral air ducts, resulting in misalignment, so that realignment is required, affecting the installation progress. On the other hand, the shaking may cause the sealing gasket to shift on the flange plate, which may affect the sealing effect between the double-layer spiral air ducts. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that in the actual use process, since it is necessary to keep the mounting holes on the two flange plates horizontally and vertically aligned when connecting and fixing the double-layer spiral air ducts, the worker may shake when supporting the double-layer spiral air ducts, resulting in misalignment, so that realignment is required, affecting the installation progress. On the other hand, the shaking may cause the sealing gasket to shift on the flange plate, which may affect the sealing effect between the double-layer spiral air ducts, and a connection structure for a marine double-layer spiral air duct is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A connection structure for a marine double-layer spiral air duct, including flange plates welded to both ends of the double-layer spiral air duct, characterized in that: between the two flange plates, there are bolts, gaskets, sealing gaskets, and a pre-fixing component. An airtightness detection component is arranged on the arc surface of the flange plate. The pre-fixing component includes two identical fixing columns fixedly connected to the left end of one side of the flange plate. Triangular blocks are slidably inserted on both sides of the arc surface of the fixing column. Fixing holes are opened on both sides of the right end of the other flange plate, and triangular grooves are opened on both sides of the inner wall of the fixing hole.

[0006] The effect achieved by the above components is: by setting a pre-fixing component, when connecting two double-layer spiral air ducts, drag one side of the double-layer spiral air duct so that the two fixing columns on the flange are inserted into the two fixing holes on the flange on the other double-layer spiral air duct, so that the triangular block is stuck in the triangular groove, and then the two double-layer spiral air ducts are pre-fixed, thereby avoiding as much as possible the shaking caused by workers supporting the double-layer spiral air ducts.

[0007] Preferably, a spring is fixedly connected between the two triangular blocks, and the spring is located in the fixing column.

[0008] The effect achieved by the above components is: the triangular block is reset by setting the spring.

[0009] Preferably, a pull rope is fixedly connected between the two triangular blocks, and the pull rope passes through the fixed column.

[0010] The effect achieved by the above components is: pulling the pull rope controls the two triangular blocks to contract, thereby performing disassembly.

[0011] Preferably, a first magnetic sheet is fixedly connected to the inner wall of the triangular groove, and a second magnetic sheet is fixedly connected to one side of the triangular block.

[0012] The effect achieved by the above components is: by setting the magnetic sheet 1 and the magnetic sheet 2, the triangular block is auxiliary limited.

[0013] Preferably, the magnetic sheet 1 and the magnetic sheet 2 attract each other when they are close to each other, and the inner wall of the fixing hole is provided with a sliding surface.

[0014] The effect achieved by the above-mentioned components is: by providing the sliding surface, the insertion area of ​​the fixing hole is increased, thereby assisting the insertion of the fixing column.

[0015] Preferably, the air tightness detection assembly comprises a detection ring arranged between the two flanges, and a whistle is installed on the arc surface of the detection ring.

[0016] The effect achieved by the above components is: the detection ring is placed between the two flanges. When the flange between the two double-layer spiral air ducts leaks, the gas is blown toward the whistle (the whistle is a prior art, and the specific use of it will not be described in detail here), thereby making a sound, thereby detecting the air tightness.

[0017] Preferably, sealing rubber rings are fixedly connected to both sides of the inner arc surface of the detection ring, and sealing grooves are provided on the arc surfaces of the two flanges.

[0018] The effect achieved by the above components is: by setting the sealing groove and the sealing rubber ring, the detection ring and the flange are sealed.

[0019] Preferably, the detection ring is set to be a transparent detection ring.

[0020] The effect achieved by the above components is as follows: By setting the detection ring to a transparent color, it assists workers in snapping the sealing rubber ring into the sealing groove.

[0021] In summary, the beneficial effects of the present utility model are as follows:

[0022] In the present utility model, by providing a pre-fixing component, when connecting two double-layer spiral air ducts, dragging one side of the double-layer spiral air duct causes the two fixing columns on the flange to insert into the two fixing holes on the flange of the other double-layer spiral air duct, enabling the triangular block to snap into the triangular groove, thereby pre-fixing the two double-layer spiral air ducts. This can, to the greatest extent possible, avoid the shaking caused when workers hold the double-layer spiral air ducts, solving the problem that when connecting and fixing the double-layer spiral air ducts, it is necessary to keep the mounting holes on the two flanges horizontally and vertically aligned. However, when workers hold the double-layer spiral air ducts, shaking may occur, resulting in misalignment, which requires re-alignment, affecting the installation progress. On the other hand, shaking may cause the sealing gasket to shift on the flange, which may affect the sealing effect between the double-layer spiral air ducts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0024] Figure 2 is a three-dimensional structural schematic diagram of the pre-fixing component of the present utility model;

[0025] Figure 3 is of the present utility model Figure 2 an enlarged three-dimensional structural schematic diagram of A in;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the detection ring of the present utility model.

[0027] Legend: 1, flange; 2, pre-fixing component; 3, airtightness detection component; 4, double-layer spiral air duct; 5, sealing gasket; 6, bolt; 7, gasket; 21, fixing column; 22, triangular block; 23, triangular groove; 24, spring; 25, pull rope; 26, magnetic piece II; 27, magnetic piece I; 28, fixing hole; 29, sliding surface; 31, detection ring; 32, whistle; 33, sealing rubber ring; 34, sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Referring to Figure 1 shown, the present utility model provides a technical solution: A marine double-layer spiral air duct connection structure includes flanges 1 welded to both ends of the double-layer spiral air duct 4. Between the two flanges 1, there are bolts 6, gaskets 7, sealing gaskets 5, and a pre-fixing component 2. The arc surface of the flange 1 is provided with an airtightness detection component 3.

[0029] Specifically describe the specific settings and functions of the pre-fixing component 2 and the airtightness detection component 3 below.

[0030] Refer to Figure 2 and Figure 3 As shown, in this embodiment: The pre-fixing component 2 includes two identical fixing columns 21 fixedly connected to the left end of the flange 1 on one side. Triangular blocks 22 are slidably inserted on both sides of the arc surface of the fixing column 21. Fixing holes 28 are opened on both sides of the right end of the flange 1 on the other side. Triangular grooves 23 are opened on both sides of the inner wall of the fixing hole 28. By setting the pre-fixing component 2, when connecting two double-layer spiral air ducts 4, drag one double-layer spiral air duct 4 so that the two fixing columns 21 on the flange 1 are inserted into the two fixing holes 28 on the flange 1 of the other double-layer spiral air duct 4, so that the triangular blocks 22 are snapped into the triangular grooves 23, thereby pre-fixing the two double-layer spiral air ducts 4, and thus minimizing the shaking caused when workers hold the double-layer spiral air duct 4. A spring 24 is fixedly connected between the two triangular blocks 22. The spring 24 is located inside the fixing column 21. By setting the spring 24, the triangular block is reset. A pull rope 25 is fixedly connected between the two triangular blocks 22. The pull rope 25 passes through the fixing column 21. Pull the pull rope 25 to control the two triangular blocks to contract, so as to disassemble. A magnetic sheet 1 27 is fixedly connected to the inner wall of the triangular groove 23. A magnetic sheet 2 26 is fixedly connected to one side of the triangular block 22. By setting the magnetic sheet 1 27 and the magnetic sheet 2 26, the triangular block 22 is assisted in positioning. The magnetic sheet 1 27 and the magnetic sheet 2 26 attract each other when approaching. A sliding surface 29 is opened on the inner wall of the fixing hole 28. By setting the sliding surface 29, the insertion area of the fixing hole 28 is increased, so as to assist the insertion of the fixing column 21.

[0031] Refer to Figure 2 and Figure 4 As shown, in this embodiment: The airtightness detection component 3 includes a detection ring 31 arranged between the two flanges 1. A whistle 32 is installed on the arc surface of the detection ring 31. Place the detection ring 31 between the two flanges 1. When the flange 1 between the two double-layer spiral air ducts 4 leaks, the gas blows towards the whistle 32 (the whistle 32 is a prior art, and its specific use will not be elaborated here), so as to emit a sound, thereby detecting the airtightness. Sealing rubber rings 33 are fixedly connected to both sides of the inner arc surface of the detection ring 31. Sealing grooves 34 are opened on the arc surfaces of the two flanges 1. By setting the sealing grooves 34 and the sealing rubber rings 33, the detection ring 31 and the flange 1 are sealed. The detection ring 31 is set as a transparent detection ring 31. By setting the detection ring 31 to be transparent, it assists the worker to snap the sealing rubber ring 33 into the sealing groove 34.

[0032] Working principle:

[0033] When using the connection structure to fix the marine double-layer spiral air duct 4, apply sealant on the flange 1 at one end of a double-layer spiral air duct 4, then cover it with the sealing gasket 5 and then apply sealant again, then drag the other double-layer spiral air duct 4 so that the flange 1 at one end is against the sealing gasket 5, and the mounting holes on the two flanges 1 are aligned horizontally and vertically, and finally tighten and fix them with bolts 6 and gaskets 7. When connecting two double-layer spiral air ducts 4, drag the double-layer spiral air duct 4 on one side so that the two fixing columns 21 on the flange 1 are inserted into the two fixing holes 28 on the flange 1 on the other double-layer spiral air duct 4, so that the triangular block 22 is stuck in the triangular groove 23, and then the two double-layer spiral air ducts 4 are pre-fixed, so as to avoid the shaking caused by the workers supporting the double-layer spiral air duct 4 as much as possible. A spring 24 is placed to reset the triangular block, and the pull rope 25 is pulled to control the two triangular blocks to contract, thereby allowing them to be disassembled. By setting a magnetic sheet 1 27 and a magnetic sheet 2 26, the triangular block 22 is assisted in limiting. By setting a sliding surface 29, the insertion area of ​​the fixing hole 28 is increased to assist in inserting the fixing column 21. The detection ring 31 is placed between the two flanges 1. When the flange 1 between the two double-layer spiral air ducts 4 leaks, the gas is blown to the whistle 32 (the whistle 32 is a prior art, and its specific use is not described in detail here), thereby making a sound to detect air tightness. By setting a sealing groove 34 and a sealing rubber ring 33, the detection ring 31 and the flange 1 are sealed. By setting the detection ring 31 to be transparent, workers are assisted in inserting the sealing rubber ring 33 into the sealing groove 34.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A double-layer spiral air duct connection structure for a ship, comprising flanges (1) welded to both ends of the double-layer spiral air duct (4), characterized in that: Bolts (6), gaskets (7), sealing gaskets (5) and a pre-fixing assembly (2) are arranged between the two flanges (1); an airtightness detection assembly (3) is arranged on the arc surface of the flange (1); the pre-fixing assembly (2) comprises two identical fixing columns (21) fixedly connected to the left end of the flange (1) on one side; triangular blocks (22) are slidably inserted on both sides of the arc surface of the fixing column (21); fixing holes (28) are opened on both sides of the right end of the flange (1) on the other side; and triangular grooves (23) are opened on both sides of the inner wall of the fixing hole (28).

2. A double-layer spiral air duct connection structure for a ship according to claim 1, characterized in that: A spring (24) is fixedly connected between the two triangular blocks (22), and the spring (24) is located inside the fixed column (21).

3. A double-layer spiral air duct connection structure for a ship according to claim 2, characterized in that: A pull rope (25) is fixedly connected between the two triangular blocks (22), and the pull rope (25) passes through the fixed column (21).

4. A double-layer spiral air duct connection structure for a ship according to claim 3, characterized in that: A first magnetic piece (27) is fixedly connected to the inner wall of the triangular groove (23), and a second magnetic piece (26) is fixedly connected to one side of the triangular block (22).

5. A double-layer spiral air duct connection structure for a ship according to claim 4, characterized in that: The first magnetic sheet (27) and the second magnetic sheet (26) attract each other when they are close to each other, and the inner wall of the fixing hole (28) is provided with a sliding surface (29).

6. A double-layer spiral air duct connection structure for a ship according to claim 5, characterized in that: The air tightness detection assembly (3) comprises a detection ring (31) arranged between the two flanges (1), and a whistle (32) is installed on the arc surface of the detection ring (31).

7. A double-layer spiral air duct connection structure for a ship according to claim 6, characterized in that: Sealing rubber rings (33) are fixedly connected to both sides of the inner arc surface of the detection ring (31), and sealing grooves (34) are formed on the arc surfaces of the two flanges (1).

8. A double-layer spiral air duct connection structure for a ship according to claim 7, characterized in that: The detection ring (31) is configured as a transparent detection ring (31).

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