Shock absorption connecting structure of marine sealing fan

Abstract

The utility model relates to the technical field of ship manufacturing, and discloses a marine sealing fan damping connecting structure which comprises a supporting rod, one end of the supporting rod is detachably and fixedly connected with a ship body support through a third connecting piece, and the other end of the supporting rod is provided with a second connecting piece and fixedly connected with the end of the supporting rod. The first connecting piece is fixedly connected with the fan shell, an elastic damping element is arranged between the first connecting piece and the second connecting piece, the two ends of the elastic damping element are fixedly connected to the first connecting piece and the second connecting piece respectively, and the elastic damping element can elastically deform under radial and axial loads. Through the arrangement of the elastic damping element between the supporting rod and the fan, the fan body can be effectively supported, the influence of external vibration on the fan body is reduced, the stability of the fan under the influence of the external vibration is kept, vibration damage of a fan pipeline and internal devices is avoided, and the failure frequency of the sealed fan is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to shipbuilding technical field, especially a marine sealed fan damping connection structure. BACKGROUND

[0002] In the shipbuilding field, marine low-speed diesel engine generally needs to keep working for a long time, because its power is larger, when the diesel engine runs, it is necessary to produce larger vibration, and the vibration will affect the use safety and service life of the peripheral equipment of the diesel engine. In actual use, it is found that the vibration brought by the diesel engine has great influence on the sealed fan connected beside, the vibration brought by the diesel engine will be transmitted to the sealed fan body through the related support or ventilation pipeline, causing the rupture of the sealed fan pipeline, even causing the damage of the sealed fan filter, leading to the frequent failure of the sealed fan, so that the maintenance cost of the ship is increased. SUMMARY

[0003] The utility model discloses a marine sealed fan damping connection structure, alleviates the influence of diesel engine vibration on the sealed fan, reduces the failure frequency of the sealed fan.

[0004] To solve the above technical problem, the embodiment of the utility model provides a technical scheme, as follows:

[0005] A marine sealed fan damping connection structure, including the support rod, one end of the support rod is detachably fixedly connected with the ship body support through the third connecting sheet, the other end is equipped with the second connecting sheet and is fixedly connected with the support rod end, still including the first connecting sheet fixedly connected with the fan shell, the first connecting sheet is equipped with the elastic damping element between the second connecting sheet, and the elastic damping element both ends are fixedly connected to the first connecting sheet and the second connecting sheet respectively, and can be elastically deformed under the radial and axial load.

[0006] Further, the elastic damping element is made of spring steel sheet or spring steel wire.

[0007] Further, the side of the first connecting sheet towards the fan shell is equipped with at least two pipe clamps, the pipe clamp is covered with the fan shell and is locked and fixed with the first connecting sheet through the fastener.

[0008] Further, the third connecting sheet and the ship body support are connected through the bolt group, and the damping washer is arranged in the bolt group.

[0009] Further, it further includes the flexible expansion joint arranged between the fan air outlet pipe and the external ventilation pipe, the expansion joint both ends are equipped with the flange, and are sealedly connected with the air outlet pipe and the ventilation pipe respectively through the flange.

[0010] Further, the expansion joint comprises an inner layer conduit and a bellows sleeved outside the conduit, and the bellows is used for absorbing axial and radial displacement of the ventilation pipe.

[0011] Further, the pipe body of the expansion joint is made of a flexible material, and the flexible material is rubber or silica gel.

[0012] The marine sealed fan damping connection structure provided by the embodiment of the utility model, compared with the prior art, through the setting of the elastic damping element between the support rod and the fan, not only can effectively support the fan body, but also can absorb axial and radial vibration energy through the elastic deformation of the elastic damping element, reduce the influence of external vibration on the fan body, maintain the stability of the fan under the influence of external vibration, avoid the vibration damage of the fan pipeline and internal devices, and reduce the failure frequency of the sealed fan; through the setting of the flexible expansion joint, the displacement stress between the ventilation pipe and the air outlet pipe can be reduced or even eliminated, the vibration transmission between the ventilation pipe and the air outlet pipe is reduced, and the stability of the connection between the ventilation pipe and the air outlet pipe is improved; through the bolt connection of the third connecting piece and the support and the bolt connection between the expansion joint and the ventilation pipe and the air outlet pipe, the marine sealed fan damping connection structure is convenient to install and maintain, and is convenient for the modification of the ship in operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] One or more embodiments are illustrated by way of example in the drawings that are for illustrative purposes only, and not for the limitation of embodiments, elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, the drawings do not constitute a proportional limit.

[0014] Figure 1 It is a three-dimensional structure schematic diagram of a marine sealed fan damping connection structure in the embodiment of the utility model;

[0015] Figure 2 It is a front view of a marine sealed fan damping connection structure in the embodiment of the utility model;

[0016] Figure 3 It is an expansion joint structure schematic diagram in the embodiment of the utility model;

[0017] Figure 4 It is a local view of a three-dimensional model of a marine sealed fan damping connection structure application scene in the embodiment of the utility model.

[0018] Mark explanation: 1, pipe clamp;2, first connecting piece;3, second connecting piece;4, elastic damping element;5, support rod;6, third connecting piece;7, expansion joint;71, flange;72, conduit;73, bellows;8, fan;81, air outlet pipe;9, ventilation pipe;10, support. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below in combination with the drawings. However, those skilled in the art can understand that, in the various embodiments of the utility model, many technical details are proposed in order to enable the reader to better understand the present application. However, even if there are no such technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in each claim of the present application can be implemented.

[0020] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0021] In the existing ship structure, the sealing fan arranged near the diesel engine often causes damage and failure of the sealing fan due to vibration conduction.

[0022] As shown in Figure 1 , 2 , 4, an embodiment of the utility model relates to a marine sealing fan damping connection structure, including support rod 5, two ends are connected with ship body support 10 and fan 8 shell respectively. The end of support rod 5 close to support 10 is fixed with third connecting sheet 6, and third connecting sheet 6 is detachably connected with ship body support 10 by bolt group. Preferably, damping washer (not marked in the drawing) is additionally arranged in the bolt group to further buffer the vibration transmission of support 10 to support rod 5;The other end of support rod 5 is fixed with second connecting sheet 3, and first connecting sheet 2 is fixedly connected with fan 8 shell through pipe clamp 1;Elastic damping element 4 is arranged between first connecting sheet 2 and second connecting sheet 3, and the both ends of elastic damping element 4 are fixedly connected with first connecting sheet 2 and second connecting sheet 3 respectively and can be elastically deformed under radial and axial load.

[0023] Preferably, the side of first connecting sheet 2 towards fan 8 shell is provided with at least two pipe clamps 1, the pipe clamp 1 is U-shaped or C-shaped, covers fan 8 shell and is locked on first connecting sheet 2 by fastener, realizes the fixed connection of first connecting sheet 2 and fan 8 shell, so that support rod 5 is fixedly connected with fan 8 through first connecting sheet 2 and supports the body of fan 8.

[0024] In one embodiment, a marine sealed fan damping connection structure is provided, and the elastic damping element 4 is made of spring steel sheet or spring steel wire and is fastened to the first connecting plate 2 and the second connecting plate 3 by fasteners. When the support rod 5 is affected by external force and vibrates, the elastic damping element 4 can absorb axial and radial vibration energy by elastic deformation, reduce the influence of external vibration on the fan 8 body, maintain the stability of the fan 8 under the influence of external vibration, avoid vibration damage to the fan 8 pipeline and internal devices, and reduce the failure frequency of the sealed fan 8.

[0025] As shown in Figures 3-4 In one embodiment, a marine sealed fan damping connection structure is provided, and the elastic damping element 4 is made of spring steel sheet or spring steel wire and is fastened to the first connecting plate 2 and the second connecting plate 3 by fasteners. When the support rod 5 is affected by external force and vibrates, the elastic damping element 4 can absorb axial and radial vibration energy by elastic deformation, reduce the influence of external vibration on the fan 8 body, maintain the stability of the fan 8 under the influence of external vibration, avoid vibration damage to the fan 8 pipeline and internal devices, and reduce the failure frequency of the sealed fan 8.

[0026] The marine sealed fan damping connection structure provided by the embodiment of the utility model, compared with the prior art, through the setting of the elastic damping element between the support rod and the fan, not only can effectively support the fan body, but also can absorb axial and radial vibration energy by elastic deformation, reduce the influence of external vibration on the fan body, maintain the stability of the fan under the influence of external vibration, avoid vibration damage to the fan pipeline and internal devices, and reduce the failure frequency of the sealed fan. Through the setting of the flexible expansion joint, the displacement stress between the ventilation pipe and the air outlet pipe can be reduced or even eliminated, the vibration transmission between the ventilation pipe and the air outlet pipe can be reduced, and the stability of the connection between the ventilation pipe and the air outlet pipe can be improved. Through the bolt connection of the third connecting plate and the support and the bolt connection between the expansion joint and the ventilation pipe and the air outlet pipe, the marine sealed fan damping connection structure is convenient to install and maintain, and is convenient for the modification of the ship in operation.

[0027] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the utility model, and in actual application, various changes can be made to them in form and details without departing from the spirit and scope of the utility model.

Claims

1. A vibration damping connection structure for a marine sealed fan, characterized in that, The support rod (5) is detachably fixedly connected with the ship body support (10) through a third connecting sheet (6) at one end, and is provided with a second connecting sheet (3) at the other end and fixedly connected with the end of the support rod (5); further comprising a first connecting sheet (2) fixedly connected with the shell of the fan (8), and an elastic damping element (4) is arranged between the first connecting sheet (2) and the second connecting sheet (3), and the elastic damping element (4) is fixedly connected at both ends with the first connecting sheet (2) and the second connecting sheet (3) respectively, and can be elastically deformed under radial and axial load.

2. The marine sealed fan isolation connection structure of claim 1, wherein, The elastic damping element (4) is made of spring steel sheet or spring steel wire.

3. The marine sealed fan isolation connection structure of claim 1, wherein, The side of the first connecting sheet (2) facing the shell of the fan (8) is provided with at least two pipe clamps (1), the pipe clamps (1) are arranged around the shell of the fan (8), and are locked and fixed with the first connecting sheet (2) through fasteners.

4. The marine sealed fan isolation connection structure of claim 1, wherein, The third connecting sheet (6) is connected with the ship body support (10) through a bolt set, and a damping washer is arranged in the bolt set.

5. The marine sealed fan isolation connection structure of claim 1, wherein, Further comprising a flexible expansion joint (7) arranged between the fan (8) air outlet pipe (81) and the external ventilation pipe (9), the expansion joint (7) is provided with flanges (71) at both ends, and is sealingly connected with the air outlet pipe (81) and the ventilation pipe (9) through the flanges (71) respectively.

6. The marine sealed fan isolation connection structure of claim 5, wherein, The expansion joint (7) comprises an inner layer conduit (72) and a corrugated pipe (73) sleeved outside the conduit (72), and the corrugated pipe is used for absorbing the axial and radial displacement of the ventilation pipe (9).

7. The marine sealed fan isolation connection structure of claim 5, wherein, The pipe body of the expansion joint (7) is made of flexible material, and the flexible material is rubber or silicone.

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