Connecting device of marine exhaust header

Abstract

The invention provides a connecting device of a marine exhaust header. The connecting device comprises an axial supporting part and a radial supporting part. The axial supporting part comprises a plurality of rigid connecting plates, and the rigid connecting plates are fixedly connected with the exhaust collecting pipe; a first connecting plate is arranged at the lower part of the rigid connecting plate; the radial supporting part comprises a rigid support, the top of the rigid support is fixedly connected with the exhaust header, a second connecting plate is arranged at the bottom of the rigid support, and an elastic piece is arranged between the second connecting plate and the rigid support. According to the exhaust manifold, rigid support and flexible compensation can be provided for the exhaust manifold, the mechanical strength requirement is met, the thermal deformation stress of the exhaust manifold in ship operation can be absorbed, the thermal deformation stress is effectively released, deformation, cracking and bursting of the exhaust manifold are avoided, and the service life of the exhaust manifold is prolonged. The safety and reliability of a ship power system are guaranteed, and the maintenance cost and the fault risk of ship operation are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of shipbuilding, and in particular to a connecting device for a marine exhaust manifold. Background Art

[0002] The marine exhaust manifold is a key component in the ship's power system. It is mainly used to collect the high-temperature exhaust gas discharged from each cylinder of the ship's engine and guide it to the exhaust treatment device or directly discharge it overboard. It plays an important role in ensuring smooth engine exhaust and maintaining the normal operation of the power system.

[0003] Currently, most commonly used marine exhaust manifolds are fixed to the engine frame using rigid connections, directly fastening the exhaust manifold to the frame with rigid fasteners such as bolts. However, marine exhaust manifolds are large in size, and their temperature fluctuates dramatically during operation, varying from normal temperature at startup to high temperatures during stable operation, with a temperature difference of over 500°C.

[0004] Due to the physical properties of metal materials, which expand and contract with heat, significant temperature fluctuations can cause significant thermal deformation stress in the exhaust manifold. Rigid connections restrict the manifold's ability to expand and contract, preventing the effective release of these stresses and causing deformation of the manifold itself. Over long periods of operation, this accumulated deformation can cause the rigid connections to loosen or break, or even crack or explode the manifold itself. This can severely impact the safety and reliability of the ship's power system, increasing maintenance costs and the risk of failure.

[0005] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the existing technology. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a connecting device for a marine exhaust manifold, which can provide rigid support for the exhaust manifold and flexible compensation for the exhaust manifold.

[0007] The embodiment of the present application specifically provides a connecting device for a marine exhaust manifold, comprising:

[0008] The axial support portion includes a plurality of rigid connecting plates, which are used to be fixedly connected to the exhaust manifold; the plurality of rigid connecting plates are arranged along the axial direction of the exhaust manifold. The arrangement direction of each rigid connecting plate is perpendicular to the axial direction of the exhaust manifold, that is, the rigid connecting plates are arranged vertically; a first connecting plate is provided at the lower part of the rigid connecting plate, which is used to fixedly connect the rigid connecting plate to the base of the ship's main engine; the first connecting plate is a steel plate with a predetermined length, and the first connecting plate and the corresponding rigid connecting plate are arranged on the same plane; the axial thermal deformation stress generated by the exhaust manifold is absorbed by the first connecting plate, and the thermal deformation stress is effectively released, thereby avoiding deformation of the exhaust manifold itself and ensuring the normal operation of the exhaust manifold and the ship's power system.

[0009] The radial support, located at the bottom center of the exhaust manifold, includes a rigid support. The rigid support's length runs along the exhaust manifold's axial direction. The top of the rigid support is fixedly connected to the exhaust manifold. A second connecting plate is located at the bottom of the rigid support, connecting to the ship's main engine base. An elastic member is located between the second connecting plate and the rigid support. This elastic member absorbs radial thermal deformation stress from the exhaust manifold, preventing deformation of the exhaust manifold itself and ensuring the proper operation of the exhaust manifold and the ship's power system.

[0010] The present application provides sufficient support for the exhaust manifold through the provision of a rigid connecting plate and a rigid support. Furthermore, the first connecting plate and the elastic member absorb the thermal deformation stress generated by the exhaust manifold, preventing deformation of the exhaust manifold itself and ensuring the normal operation of the exhaust manifold and the ship's power system.

[0011] In an operative manner, the elastic member comprises at least a plurality of elastic sheets, each of the elastic sheets is arranged in a horizontal direction, and the plurality of elastic sheets are stacked to form the elastic member.

[0012] It should be noted that the elastic member is made of spring steel sheet. When the exhaust manifold undergoes radial deformation due to temperature differences, the radial stress of the exhaust manifold is relieved by compressing the spring steel sheet. The spring steel sheet can maintain its shape under high loads and avoid plastic deformation.

[0013] In one practicable embodiment, the rigid connecting plate includes a fixedly connected annular connecting section and a straight connecting section. The annular connecting section is sleeved onto the arcuate side surface of the exhaust manifold, while the straight connecting section extends downward. The lower portion of the straight connecting section is fixedly connected to the first connecting plate. After the annular connecting section secures the circumference of the exhaust manifold, stress is then transferred through the straight connecting section.

[0014] It should be noted that the annular connecting section is welded to the arc side surface of the exhaust manifold, so as to facilitate the transfer of the thermal deformation stress generated in the axial direction of the exhaust manifold to the first connecting plate for absorption.

[0015] In one implementation, the first connecting plate is detachably fixedly connected to the rigid connecting plate via fastening bolts. When the deformation of the first connecting plate exceeds a threshold, the first connecting plate can be replaced by fastening the bolts. Alternatively, the first connecting plate can be replaced with a different predetermined length based on different installation requirements to ensure proper installation and operation of the exhaust manifold.

[0016] In an operative manner, the width of the first connecting plate is the same as that of the rigid connecting plate, so as to ensure that the thermal deformation stress generated in the axial direction of the exhaust manifold can be completely transferred to the first connecting plate.

[0017] In one practicable embodiment, a first pressure strip is provided at the connection between the first connecting plate and the rigid connecting plate. After the first connecting plate and the rigid connecting plate overlap by a predetermined length, the first pressure strip is pressed onto the connection between the first connecting plate and the rigid connecting plate, and then secured with fastening bolts. The provision of the first pressure strip disperses stress on the fastening bolts along the length of the first pressure strip, preventing excessive stress from causing damage to the connection between the rigid connecting plate and the first connecting plate.

[0018] It should be noted that a plurality of mounting holes are provided on the first connecting plate, the rigid connecting plate and the first pressure strip, and the mounting holes are used for installing fastening bolts.

[0019] In one practicable manner, a first connecting edge is provided at the bottom end of the first connecting plate, the first connecting edge is arranged in a horizontal direction, and the first connecting edge is used to be fixedly connected to the base of the main engine of the ship, so as to facilitate the disassembly and replacement of the first connecting plate.

[0020] In one practicable embodiment, as shown in the figure, the rigid support includes, from top to bottom, an arc-shaped connecting plate, a trapezoidal connecting plate, and a folding support plate; the arc surface of the arc-shaped connecting plate is used to fit with the bottom of the exhaust manifold, the trapezoidal connecting plate is an inverted trapezoidal plate, and the trapezoidal connecting plate is arranged vertically, the folding support plate is arranged horizontally, the top surface of the folding support plate is arranged to fit with the lower edge of the trapezoidal connecting plate, and the length direction of the folding support plate is the same as the axial direction of the exhaust manifold; the bottom of the folding support plate is fixedly connected to the second connecting plate via an elastic member. By setting the arc-shaped connecting plate to fit with the exhaust manifold, the contact area between the arc-shaped connecting plate and the exhaust manifold is increased, ensuring that the thermal deformation stress of the exhaust manifold can be quickly transferred to the rigid support. By setting the folding support plate to fit with the lower edge of the trapezoidal connecting plate, the thermal deformation stress of the exhaust manifold can be further quickly transferred.

[0021] Specifically, the folding support plate includes a horizontal section and two inclined sections, which are respectively connected to the short side and the edges of the two side edges of the trapezoidal connecting plate.

[0022] In an practicable manner, the bottom width of the second connecting plate is greater than the top width of the second connecting plate, which can ensure the stability of the exhaust manifold during operation.

[0023] Specifically, as shown in the figure, the second connecting plate is a trapezoidal structure, and the two side edges of the trapezoidal structure are arc edges, which ensure the stability of the second connecting plate in the vertical direction.

[0024] In one practicable embodiment, a second connecting edge is provided at the bottom end of the second connecting plate, the second connecting edge being fixedly connected to the base of the main engine of the vessel. A third connecting edge is provided at the top end of the second connecting plate, the third connecting edge being fixedly connected to the horizontal section of the folding support plate and the elastic member.

[0025] Specifically, mounting holes are provided on the third connecting edge, the horizontal section of the folding support plate and the elastic member, and fastening bolts are provided in the mounting holes to fix the third connecting edge with the horizontal section of the folding support plate and the elastic member.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] In the technical solution of the present application, it can provide both rigid support and flexible compensation for the exhaust manifold, which not only meets the mechanical strength requirements, but also absorbs the thermal deformation stress of the exhaust manifold during ship operation, so that the thermal deformation stress can be effectively released, avoiding deformation, cracking and explosion of the exhaust manifold itself, ensuring the safety and reliability of the ship's power system, reducing the maintenance cost and failure risk of ship operation, and facilitating its promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 1 is a schematic structural diagram of a connecting device for a marine exhaust manifold according to an embodiment of the present invention.

[0029] Figure 2 It is a structural schematic diagram of a rigid connecting plate in a connecting device for a marine exhaust manifold according to an embodiment of the present invention.

[0030] Figure 3 It is a structural schematic diagram of a rigid support in a connecting device for a marine exhaust manifold according to an embodiment of the present invention.

[0031] Figure 4 The figure is a schematic structural diagram of a trapezoidal connecting plate in a connecting device for a marine exhaust manifold according to an embodiment of the present invention.

[0032] Figure 5The figure is a schematic structural diagram of a folding support plate in a connecting device for a marine exhaust manifold according to an embodiment of the present invention.

[0033] Figure 6 It is a structural schematic diagram of an elastic member in a connecting device for a marine exhaust manifold according to an embodiment of the present invention.

[0034] The description of the accompanying drawings is as follows:

[0035] 1. Annular connecting section; 2. Exhaust manifold; 3. First connecting plate; 4. Second connecting plate; 5. First pressure strip; 6. Straight plate connecting section; 7. Folding support plate; 8. Third connecting edge; 9. Elastic member; 10. Arc-shaped connecting plate; 11. Trapezoidal connecting plate; 12. Second connecting edge. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0040] See also Figure 1 The present application specifically provides a connecting device for a marine exhaust manifold, comprising:

[0041] The axial support portion includes a plurality of rigid connecting plates, which are used to be fixedly connected to the exhaust manifold 2; the plurality of rigid connecting plates are arranged along the axial direction of the exhaust manifold 2. The arrangement direction of each rigid connecting plate is perpendicular to the axial direction of the exhaust manifold 2, that is, the rigid connecting plates are arranged vertically; a first connecting plate 3 is provided at the lower part of the rigid connecting plate, and the first connecting plate 3 is used to fixedly connect the rigid connecting plate to the base of the ship's main engine; the first connecting plate 3 is a steel plate with a predetermined length, and the first connecting plate 3 and the corresponding rigid connecting plate are arranged on the same plane; the axial thermal deformation stress generated by the exhaust manifold 2 is absorbed by the first connecting plate 3, and the thermal deformation stress is effectively released, thereby avoiding deformation of the exhaust manifold 2 itself and ensuring the normal operation of the exhaust manifold 2 and the ship's power system.

[0042] The radial support, located at the bottom and center of the exhaust manifold 2, includes a rigid support. The rigid support's length runs along the axial direction of the exhaust manifold 2. Its top is fixedly connected to the exhaust manifold 2. A second connecting plate 4 is located at its bottom, connecting to the ship's main engine base. An elastic member 9 is located between the second connecting plate 4 and the rigid support. This elastic member 9 absorbs radial thermal deformation stress from the exhaust manifold 2, preventing deformation of the exhaust manifold 2 itself and ensuring the proper operation of the exhaust manifold 2 and the ship's power system.

[0043] The present application provides sufficient support for the exhaust manifold 2 by providing a rigid connecting plate and a rigid support. Furthermore, combined with the first connecting plate 3 and the elastic member 9, the exhaust manifold 2 absorbs the thermal deformation stress generated by the exhaust manifold 2, preventing deformation of the exhaust manifold 2 itself and ensuring the normal operation of the exhaust manifold 2 and the ship's power system.

[0044] In an operative manner, the elastic member 9 includes at least a plurality of elastic sheets, each of which is arranged in a horizontal direction, and the plurality of elastic sheets are stacked to form the elastic member 9 .

[0045] It should be noted that the elastic member 9 is made of spring steel sheet. When the exhaust manifold 2 undergoes radial deformation due to temperature difference, the radial stress of the exhaust manifold 2 can be released by compressing the spring steel sheet. The spring steel sheet can maintain its shape when subjected to high loads and avoid plastic deformation.

[0046] In one practicable embodiment, the rigid connecting plate includes a fixedly connected annular connecting section 1 and a straight connecting section 6. The annular connecting section 1 is sleeved onto the arcuate side surface of the exhaust manifold 2, and the straight connecting section 6 extends downward. The lower portion of the straight connecting section 6 is fixedly connected to the first connecting plate 3. After the annular connecting section 1 secures the circumference of the exhaust manifold 2, stress is transferred through the straight connecting section 6.

[0047] It should be noted that the annular connecting section 1 is welded to the arc side surface of the exhaust manifold 2 so as to facilitate the transfer of the thermal deformation stress generated in the axial direction of the exhaust manifold 2 to the first connecting plate 3 for absorption.

[0048] In one practicable embodiment, the first connecting plate 3 is detachably fixedly connected to the rigid connecting plate via fastening bolts. When the deformation of the first connecting plate 3 exceeds a threshold, the first connecting plate 3 is replaced by fastening bolts. Alternatively, first connecting plates 3 of different predetermined lengths can be replaced based on different installation requirements to ensure proper installation and operation of the exhaust manifold 2.

[0049] In an operative manner, the width of the first connecting plate 3 is the same as that of the rigid connecting plate, so as to ensure that the thermal deformation stress generated in the axial direction of the exhaust manifold 2 can be completely transferred to the first connecting plate 3 .

[0050] In one practicable embodiment, a first pressure strip 5 is provided at the connection between the first connecting plate 3 and the rigid connecting plate. After the first connecting plate 3 and the rigid connecting plate overlap by a predetermined length, the first pressure strip 5 is pressed onto the connection between the first connecting plate 3 and the rigid connecting plate, and then secured with fastening bolts. The provision of the first pressure strip 5 disperses the stress on the fastening bolts along the length of the first pressure strip 5, preventing excessive stress from damaging the connection between the rigid connecting plate and the first connecting plate 3.

[0051] It should be noted that a plurality of mounting holes are provided on the first connecting plate 3 , the rigid connecting plate and the first pressure strip 5 , and the mounting holes are used for installing fastening bolts.

[0052] In one practicable manner, a first connecting edge is provided at the bottom end of the first connecting plate 3 , and the first connecting edge is arranged in a horizontal direction. The first connecting edge is used to be fixedly connected to the base of the main engine of the ship, so as to facilitate the disassembly and replacement of the first connecting plate 3 .

[0053] In one conceivable embodiment, as shown in the figure, the rigid support comprises, from top to bottom, an arcuate connecting plate 10, a trapezoidal connecting plate 11, and a folding support plate 7. The arcuate surface of the arcuate connecting plate 10 is designed to mate with the bottom of the exhaust manifold 2. The trapezoidal connecting plate 11 is an inverted trapezoidal plate and is arranged vertically. The folding support plate 7 is arranged horizontally, with the top surface of the folding support plate 7 mate with the lower edge of the trapezoidal connecting plate 11, and the length of the folding support plate 7 is aligned with the axis of the exhaust manifold 2. The bottom of the folding support plate 7 is fixedly connected to the second connecting plate 4 via an elastic member 9. The arcuate connecting plate 10 mates with the exhaust manifold 2, increasing the contact area with the exhaust manifold 2 and ensuring that thermal deformation stresses of the exhaust manifold 2 are quickly transferred to the rigid support. The folding support plate 7 mates with the lower edge of the trapezoidal connecting plate 11, further ensuring that thermal deformation stresses of the exhaust manifold 2 are quickly transferred.

[0054] Specifically, the folding support plate 7 includes a horizontal section and two inclined sections, which are respectively connected to the edges of the short side and two side edges of the trapezoidal connecting plate 11.

[0055] In an practicable manner, the bottom width of the second connecting plate 4 is greater than the top width of the second connecting plate 4 , which can ensure the stability of the exhaust manifold 2 during operation.

[0056] Specifically, as shown in the figure, the second connecting plate 4 is a trapezoidal structure, and the two side edges of the trapezoidal structure are arc edges, which ensure the stability of the second connecting plate 4 in the vertical direction.

[0057] In one practicable embodiment, a second connecting edge 12 is provided at the bottom end of the second connecting plate 4, and the second connecting edge 12 is used to be fixedly connected to the base of the main engine of the ship. A third connecting edge 8 is provided at the top end of the second connecting plate 4, and the third connecting edge 8 is fixedly connected to the horizontal section of the folding support plate 7 and the elastic member 9.

[0058] Specifically, mounting holes are provided on the third connecting edge 8, the horizontal section of the folding support plate 7 and the elastic member 9, and fastening bolts are provided in the mounting holes to fix the third connecting edge 8 to the horizontal section of the folding support plate 7 and the elastic member 9.

[0059] To sum up, the connecting device of the marine exhaust manifold 2 provided in the present application can not only provide rigid support for the exhaust manifold 2, but also provide flexible compensation for the exhaust manifold 2. It not only meets the mechanical strength requirements, but also can absorb the thermal deformation stress of the exhaust manifold 2 during the operation of the ship, so that the thermal deformation stress can be effectively released, avoiding deformation, cracking and explosion of the exhaust manifold 2 itself, ensuring the safety and reliability of the ship's power system, reducing the maintenance cost and failure risk of ship operation, and facilitating promotion and use.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A connecting device for a marine exhaust manifold, characterized in that: include: The axial support portion comprises a plurality of rigid connecting plates, wherein the rigid connecting plates are used for being fixedly connected to the exhaust manifold (2); the plurality of rigid connecting plates are arranged along the axial direction of the exhaust manifold (2); the arrangement direction of each rigid connecting plate is perpendicular to the axial direction of the exhaust manifold (2); a first connecting plate (3) is arranged at the lower part of the rigid connecting plate, and the first connecting plate (3) is used for fixing the rigid connecting plate to the base of the main engine of the ship; the first connecting plate (3) is a steel plate with a predetermined length, and the first connecting plate (3) and the corresponding rigid connecting plate are arranged on the same plane; A radial support portion is provided at the bottom of the middle position of the exhaust manifold (2), comprising a rigid support, the rigid support being arranged along the axial direction of the exhaust manifold (2), the top of the rigid support being used for fixed connection with the exhaust manifold (2), a second connecting plate (4) being provided at the bottom of the rigid support, the second connecting plate (4) being used for connection with the base of the main engine of the ship; an elastic member (9) being provided between the second connecting plate (4) and the rigid support.

2. The connecting device for marine exhaust manifold according to claim 1, characterized in that: The elastic member (9) comprises at least a plurality of elastic sheets, each of which is arranged in a horizontal direction, and the plurality of elastic sheets are stacked to form the elastic member (9).

3. The connecting device for marine exhaust manifold according to claim 1, characterized in that: The rigid connecting plate comprises a fixedly connected annular connecting section (1) and a straight plate connecting section (6), wherein the annular connecting section (1) is sleeved on the arc side surface of the exhaust manifold (2), and the straight plate connecting section (6) extends downward, and the straight plate connecting section (6) is used for fixed connection with the first connecting plate (3).

4. The connecting device for marine exhaust manifold according to claim 3, characterized in that: A plurality of fastening bolts are provided between the first connecting plate (3) and the rigid connecting plate, and the first connecting plate (3) and the rigid connecting plate are detachably fixedly connected via the fastening bolts.

5. The connecting device for marine exhaust manifold according to claim 1, characterized in that: The width of the first connecting plate (3) is the same as the width of the rigid connecting plate.

6. The connecting device for marine exhaust manifold according to claim 1, characterized in that: A first pressure strip (5) is provided at the connection between the first connecting plate (3) and the rigid connecting plate.

7. The connecting device for marine exhaust manifold according to claim 1, characterized in that: A first connecting edge is provided at the bottom end of the first connecting plate (3), and the first connecting edge is used for fixed connection with the main engine base of the ship.

8. The connecting device for marine exhaust manifold according to claim 1, characterized in that: The rigid support comprises, from top to bottom, an arc-shaped connecting plate (10), a trapezoidal connecting plate (11) and a folding support plate (7); the arc surface of the arc-shaped connecting plate (10) is used to fit with the bottom of the exhaust manifold (2); the trapezoidal connecting plate (11) is an inverted trapezoidal plate, and the trapezoidal connecting plate (11) is arranged vertically; the folding support plate (7) is arranged horizontally, and the length direction of the folding support plate (7) is the same as the axial direction of the exhaust manifold (2); the bottom of the folding support plate (7) is fixedly connected to the second connecting plate (4) through an elastic member (9).

9. The connecting device for marine exhaust manifold according to claim 1, characterized in that: The width of the bottom end of the second connecting plate (4) is greater than the width of the top end of the second connecting plate (4).

10. The connecting device for marine exhaust manifold according to claim 8, characterized in that: A second connecting edge (12) is provided at the bottom end of the second connecting plate (4), and the second connecting edge (12) is used to be fixedly connected to the base of the main engine of the ship; a third connecting edge (8) is provided at the top end of the second connecting plate (4), and the third connecting edge (8) is fixedly connected to the folding support plate (7) and the elastic member (9).

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