A high-pressure built-in air duct structure and its assembly and welding method

Abstract

The present invention relates to the field of shipbuilding technology, and discloses a high-pressure built-in air duct structure, comprising a middle built-in air duct and a side built-in air duct, wherein two groups of side built-in air ducts are provided and are symmetrically arranged on both sides of the middle built-in air duct, the middle built-in air duct comprises a middle air duct platform, a middle deck, a transverse support plate and a longitudinal bulkhead, and the longitudinal bulkhead is provided with air holes, the side built-in air duct comprises a side air duct platform, a side deck and a support assembly, the side deck is provided with air inlets, the middle air duct platform is provided with longitudinal air outlets, and the side air duct platform is provided with transverse air outlets; a method for assembling and welding the high-pressure built-in air duct structure is also disclosed, and the present invention guides and evenly distributes the high-pressure airflow so that the gas can be evenly distributed in the cushioning apron, thereby avoiding local pressure unevenness causing a decrease in the stability of the cushioning apron, and effectively enhancing the structural strength of the high-pressure built-in air duct structure.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a high-pressure built-in air duct structure and an assembly and welding method thereof. Background Art

[0002] In the shipping industry, some ship types (hovercraft) use lift fans to pressurize air, forming a high-pressure airflow that is transported to the lift apron at the bottom of the ship through air ducts. The high-pressure airflow needs to be evenly distributed to the lift apron through the outlet. The design of the air duct needs to ensure that the internal components do not hinder the gas flow. At the same time, the air duct needs to withstand the high-pressure environment from the airflow while being subjected to exciting forces from complex sources, such as mechanical equipment and waves on board. Therefore, a high-pressure built-in air duct structure needs to be designed to solve the above technical problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-pressure built-in air duct structure and its assembly and welding method, which can guide and evenly distribute the high-pressure airflow so that the gas can be evenly distributed in the padding apron, avoid local pressure unevenness causing the padding apron to lose stability, and effectively enhance the structural strength of the high-pressure built-in air duct structure.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a high-pressure built-in air duct structure, which is arranged on the hull frame. The high-pressure built-in air duct structure includes a middle built-in air duct and a side built-in air duct. The side built-in air duct is provided with two groups and is symmetrically arranged on the lateral sides of the middle built-in air duct. The middle built-in air duct includes a middle air duct platform, a middle deck, a transverse support plate and a longitudinal bulkhead. The middle air duct platform is installed on the upper side of the hull frame. The two longitudinal bulkheads extend longitudinally along the hull frame and are respectively connected to the lateral sides of the middle air duct platform. Air holes are provided on the longitudinal bulkheads. The transverse sides of the deck are respectively connected to the two longitudinal bulkheads, the intermediate airway platform, the intermediate deck and the two longitudinal bulkheads form an intermediate airway cavity, a plurality of transverse support plates are arranged in the intermediate airway cavity at intervals along the longitudinal direction of the hull frame, the upper and lower ends of the transverse support plates are respectively connected to the intermediate deck and the intermediate airway platform, and the length of the transverse support plates is less than the width of the intermediate airway platform; a longitudinal air outlet extending in the longitudinal direction of the hull frame is provided on the intermediate airway platform, the upper side of the longitudinal air outlet is communicated with the intermediate airway cavity, and the lower side of the longitudinal air outlet is communicated with the hull frame;

[0005] The built-in side air duct includes a side air duct platform, a side deck and a support assembly. The side air duct platform is installed on the upper side of the hull frame, the support assembly is connected to the outer side of the side air duct platform, and the lateral sides of the side deck are respectively connected to the longitudinal bulkhead and the support assembly. The side air duct platform, the side deck, the support assembly and the longitudinal bulkhead form a side air duct cavity. The side deck is provided with an air inlet, and the support assembly is provided with an air vent; the side air duct platform and the intermediate air duct platform are both provided with lateral air outlets extending laterally along the hull frame, and the lateral air outlets on both sides are respectively connected with the longitudinal air outlets, the upper sides of the lateral air outlets are connected with the intermediate air duct cavity and the side air duct cavity, and the lower sides of the lateral air outlets are connected with the hull frame.

[0006] As a preferred solution of the present invention, the transverse support plate spans the longitudinal air outlet.

[0007] As a preferred solution of the present invention, the support assembly includes a plurality of vertical support circular tubes arranged at intervals, an oblique support circular tube is provided between two adjacent vertical support circular tubes, and the gap between the adjacent vertical support circular tubes and the oblique support circular tubes forms the vent; and a plurality of support circular tubes are provided in the middle airway cavity and the side airway cavity.

[0008] As a preferred solution of the present invention, reinforcing brackets are provided between the vertical supporting circular tube and the side airway platform and the side deck respectively, and reinforcing brackets are provided between the oblique supporting circular tube and the side airway platform and the side deck respectively.

[0009] As a preferred solution of the present invention, two air inlets spaced apart in the longitudinal direction are provided on the side deck, and a plurality of air holes are provided on the longitudinal bulkhead.

[0010] As a preferred solution of the present invention, a reinforcement ring is provided around the air hole.

[0011] As a preferred solution of the present invention, the lower surface of the middle deck and the lower surface of the side deck are both provided with longitudinal T-shaped stiffeners arranged along the longitudinal extension of the hull frame and transverse T-shaped stiffeners arranged along the transverse extension of the hull frame.

[0012] As a preferred solution of the present invention, reinforcing plates are provided between the longitudinal bulkhead and the intermediate airway platform and the side deck, respectively, and a reinforcing plate is provided between the transverse support plate and the intermediate airway platform.

[0013] As a preferred solution of the present invention, an air duct communicating with and cooperating with the longitudinal air outlet and the transverse air outlet is provided in the hull frame.

[0014] In addition, the present invention also provides a method for welding a high-pressure built-in air duct structure, comprising the following steps:

[0015] Step 1: Assemble the middle airway platform and the side airway platform to form a high-pressure airway platform, and install the high-pressure airway platform on the hull frame;

[0016] Step 2: Install two longitudinal bulkheads symmetrically on the intermediate airway platform, and install transverse support plates at intervals along the longitudinal direction on the intermediate airway platform;

[0017] Step 3: Install the two sets of support components on the outside of the side airway platform respectively;

[0018] Step 4: Assemble the middle deck and the side deck to form the upper deck, and connect and fix the upper deck to the longitudinal bulkhead, transverse support plate and support assembly;

[0019] Step 5: Perform precision inspection and non-destructive testing on the high-pressure built-in airway structure.

[0020] Compared with the prior art, the high-pressure built-in air duct structure and its assembly and welding method according to the embodiment of the present invention have the following advantages:

[0021] The present invention uses a lifting fan to vertically direct the high-pressure airflow formed from the air inlets on the side decks on both sides into the built-in air duct on the side, and the high-pressure airflow enters the middle built-in air duct through the air holes. Part of the high-pressure airflow flows from the air vents of the support components in the built-in air duct on the side to the side of the lifting skirt, and part of the high-pressure airflow can flow from the longitudinal air outlet and the transverse air outlet through the hull skeleton to the bottom of the lifting skirt, and part of the high-pressure airflow flows into the longitudinal ends of the lifting skirt through the longitudinal end ports of the middle built-in air duct and the side built-in air duct. The high-pressure airflow is guided and evenly distributed by the high-pressure built-in air duct structure, so that the gas sent to the lifting apron can be evenly distributed, so that the hull reaches a standard lifting state, avoiding local pressure unevenness causing the lifting apron to decrease in stability; and the structural strength of the high-pressure built-in air duct structure is effectively strengthened by the transverse support plate, the longitudinal bulkhead and the support component, without hindering the flow of high-pressure airflow. At the same time, the middle deck and the side deck form the upper deck of the hull, which can reduce the overall weight of the hull and achieve lightweighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0023] Figure 1 A schematic structural diagram of a high-pressure built-in airway structure provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the middle A direction;

[0025] Figure 3 A top view of the high-pressure built-in airway structure provided by the present invention;

[0026] Figure 4 for Figure 3 Cross-section along the middle BB direction;

[0027] Figure 5 for Figure 3 Cross-section in the mid-CC direction;

[0028] Figure 6 It is a top view of the high-pressure airway platform;

[0029] Figure 7 for Figure 3 Intake airflow diagram of a high-pressure built-in air duct structure in the CC direction;

[0030] Figure 8 A gas flow diagram in the middle airway cavity provided by the present invention;

[0031] Figure 9 A schematic diagram of the connection nodes of the vertical support circular tubes provided by the present invention;

[0032] In the figure, there are the middle built-in air duct 1; the middle air duct platform 11; the middle deck 12; the transverse support plate 13; the longitudinal bulkhead 14; the air hole 15; the longitudinal air outlet 16; the reinforcing plate 17; the supporting circular pipe 18; the side built-in air duct 2; the side air duct platform 21; the side deck 22; the supporting assembly 23; the air inlet 24; the transverse air outlet 25; the vertical supporting circular pipe 26; the oblique supporting circular pipe 27; the reinforcing bracket 28; the hull frame 3; and the air duct 31. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] like Figures 1 to 9As shown, a high-pressure built-in air duct structure of a preferred embodiment of the present invention is provided on a hull frame 3, and the high-pressure built-in air duct structure includes a middle built-in air duct 1 and a side built-in air duct 2. The side built-in air duct 2 is provided with two groups and is symmetrically arranged on both sides of the lateral sides of the middle built-in air duct 1. The middle built-in air duct 1 includes a middle air duct platform 11, a middle deck 12, a transverse support plate 13 and a longitudinal bulkhead 14. The middle air duct platform 11 is installed on the upper side of the hull frame 3, and the two longitudinal bulkheads 14 extend longitudinally along the hull frame 3 and are respectively connected to the On the lateral sides of the intermediate airway platform 11, the longitudinal bulkheads 14 are provided with air holes 15, and the lateral sides of the intermediate deck 12 are respectively connected to the two longitudinal bulkheads 14. The intermediate airway platform 11, the intermediate deck 12 and the two longitudinal bulkheads 14 form an intermediate airway cavity, and a plurality of transverse support plates 13 are arranged in the intermediate airway cavity at intervals along the longitudinal direction of the hull frame 3. The upper and lower ends of the transverse support plates 13 are respectively connected to the intermediate deck 12 and the intermediate airway platform 11, and the length of the transverse support plates 13 is less than the width of the intermediate airway platform 11; Figure 6 As shown, the intermediate airway platform 11 is provided with a longitudinal air outlet 16 extending longitudinally along the hull frame 3. The upper side of the longitudinal air outlet 16 is communicated with the intermediate airway cavity, and the lower side of the longitudinal air outlet 16 is communicated with the hull frame 3.

[0036] The side built-in airway 2 includes a side airway platform 21, a side deck 22 and a support assembly 23. The side airway platform 21 is arranged on the upper side of the hull frame 3, and the middle deck 12 and the side airway platform 21 are located on the same plane. The support assembly 23 is connected to the outside of the side airway platform 21. The lateral sides of the side deck 22 are respectively connected to the longitudinal bulkhead 14 and the support assembly 23. The side airway platform 21, the side deck 22, the support assembly 23 and the longitudinal bulkhead 14 form a side airway cavity. An air inlet 24 is provided on the side deck 22, and a vent is provided on the support assembly 23. Figure 6 As shown, the side air duct platform 21 and the intermediate air duct platform 11 are provided with transverse air outlets 25 extending laterally along the hull frame 3, and the transverse air outlets 25 on both sides are respectively connected with the longitudinal air outlets 16, and the upper sides of the transverse air outlets 25 are connected with the intermediate air duct cavity and the side air duct cavity, and the lower sides of the transverse air outlets 25 are connected with the hull frame. Specifically, the longitudinal air outlet 16 and the transverse air outlet 25 form a cross-shaped air outlet as a whole, and the center point of the cross-shaped air outlet is located at the center point of the intermediate air duct platform 11.

[0037] The present invention uses the cushioning fan to vertically enter the side built-in air duct 2 from the air inlet 24 on the side deck 22 on both sides, and the high-pressure air flow enters the middle built-in air duct 1 through the air hole 15. Part of the high-pressure air flow flows from the air vent of the support component 23 in the side built-in air duct 2 to the side of the cushioning apron. Part of the high-pressure air flow can flow from the longitudinal air outlet 16 and the transverse air outlet 25 through the hull frame 3 to the bottom of the cushioning apron. Part of the high-pressure air flow flows into the longitudinal end ports of the middle built-in air duct 1 and the side built-in air duct 2. The high-pressure airflow is guided and evenly distributed at both longitudinal ends of the lifting skirt through the high-pressure built-in air duct structure, so that the gas sent into the lifting skirt can be evenly distributed, so that the hull reaches a standard lifting state, avoiding local pressure unevenness causing the lifting skirt to lose stability; and the structural strength of the high-pressure built-in air duct structure is effectively enhanced by the transverse support plate 13, the longitudinal bulkhead 14 and the support assembly 23, without hindering the flow of high-pressure airflow. At the same time, the middle deck 12 and the side deck 22 form the upper deck of the hull, which can reduce the overall weight of the hull and achieve lightweighting.

[0038] Exemplarily, the transverse support plate 13 spans the longitudinal air outlet 16 , effectively improving the structural strength of the intermediate air duct platform 11 .

[0039] Exemplarily, the support assembly 23 includes a plurality of vertical support circular tubes 26 arranged at intervals, and an oblique support circular tube 27 is provided between two adjacent vertical support circular tubes 26. The gap between the adjacent vertical support circular tubes 26 and the oblique support circular tubes 27 forms an air vent. Furthermore, the two adjacent oblique support circular tubes 27 are inclined in opposite directions to ensure that the connection between the side airway platform 21 and the side deck 22 is stable and high; a plurality of support circular tubes 18 are provided in the intermediate airway cavity and the side airway cavity, and the upper and lower ends of the support circular tubes 18 in the intermediate airway cavity are respectively connected to the intermediate airway platform 11 and the intermediate deck 12, and the upper and lower ends of the support circular tubes 18 in the side airway cavity are respectively connected to the side airway platform 21 and the side deck 22. In addition, the upper and lower ends of the support circular tubes 18 are provided with connecting elbow plates, and multiple support points are provided in the intermediate built-in airway 1 and the side built-in airway 2 to enhance the structural strength of the entire high-pressure built-in airway structure.

[0040] Furthermore, reinforcing brackets 28 are provided between the vertical supporting circular tube 26 and the side airway platform 21 and the side deck 22, respectively, and reinforcing brackets 28 are provided between the oblique supporting circular tube 27 and the side airway platform 21 and the side deck 22, respectively, to improve the connection strength between the supporting assembly 23 and the side airway platform 21 and the side deck 22.

[0041] Exemplarily, two air inlets 24 spaced apart longitudinally are provided on the side deck 22, and a plurality of air holes 15 are provided on the longitudinal bulkhead 14, so that the air holes 15 can evenly guide the high-pressure airflow to the middle built-in air duct 1.

[0042] Furthermore, a reinforcement ring is provided around the air hole 15 to enhance the structural strength of the air hole 15 and prevent the air hole 15 from being deformed by the high-pressure airflow and affecting the structural strength of the longitudinal bulkhead 14 .

[0043] Illustratively, the lower surface of the middle deck 12 and the lower surface of the side deck 22 are both provided with longitudinal T-shaped stiffeners extending along the longitudinal direction of the hull frame 3 and transverse T-shaped stiffeners extending along the transverse direction of the hull frame 3, which effectively improve the structural strength of the middle deck 12 and the side deck 22.

[0044] Furthermore, reinforcing plates 17 are provided between the longitudinal bulkhead 14 and the intermediate airway platform 11 and the side deck 22, respectively, and reinforcing plates 17 are provided between the transverse support plate 13 and the intermediate airway platform 11, so as to improve the rigidity of the connection nodes between the longitudinal bulkhead 14, the transverse support plate 13 and the intermediate airway platform 11 and the side deck 22, thereby enhancing the structural strength of the high-pressure built-in airway structure.

[0045] Specifically, an air duct 31 is provided in the hull frame 3 to communicate with the longitudinal air outlet 16 and the transverse air outlet 25. The air duct 31 is cross-shaped and faces the longitudinal air outlet 16 and the transverse air outlet 25, effectively delivering high-pressure airflow to the bottom of the padding apron.

[0046] The present invention also provides a method for assembling and welding a high-pressure built-in air duct structure, comprising the following steps:

[0047] Step 1: Assemble the intermediate airway platform 11 and the side airway platform 21 to form a high-pressure airway platform, and install the high-pressure airway platform on the hull frame 3;

[0048] Step 2: Install two longitudinal bulkheads 14 symmetrically on the intermediate airway platform 11. The longitudinal bulkheads 14 are welded and fixed by a symmetrical divergent welding method. Install transverse support plates 13 on the intermediate airway platform 11 at intervals along the longitudinal direction.

[0049] Step 3: Install the two sets of support assemblies 23 symmetrically on the outside of the side airway platform 21, and install the multiple support circular tubes 18 symmetrically on the middle airway platform 11 and the side airway platform 21. Install brackets on the vertical support circular tubes 26, the oblique support circular tubes 27, and the support circular tubes 18 of the support assemblies 23. The vertical support circular tubes 26, the oblique support circular tubes 27, and the support circular tubes 18 are welded and fixed by the side welding method;

[0050] Step 4: Assemble the middle deck 12 and the side deck 22 to form the upper deck (eg Figure 6 As shown in the figure, first weld the longitudinal T-shaped stiffeners and transverse T-shaped stiffeners on the upper deck (the middle deck 12 and the side deck 22), and then connect and fix the upper deck to the longitudinal bulkhead 14, the transverse support plate 13 and the support assembly 23;

[0051] Step 5: Perform precision inspection and non-destructive testing on the high-pressure built-in airway structure.

[0052] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection 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 the specific circumstances.

[0053] 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 high-pressure built-in airway structure, characterized in that: The high-pressure built-in air duct structure is arranged on the hull frame, and the high-pressure built-in air duct structure includes a middle built-in air duct and a side built-in air duct. The side built-in air duct is provided with two groups and is symmetrically arranged on the lateral sides of the middle built-in air duct. The middle built-in air duct includes a middle air duct platform, a middle deck, a transverse support plate and a longitudinal bulkhead. The middle air duct platform is installed on the upper side of the hull frame. The two longitudinal bulkheads extend longitudinally along the hull frame and are respectively connected to the lateral sides of the middle air duct platform. Air holes are provided on the longitudinal bulkheads. The lateral sides of the middle deck are respectively connected to two On each of the longitudinal bulkheads, the intermediate airway platform, the intermediate deck and the two longitudinal bulkheads form an intermediate airway cavity, a plurality of transverse support plates are arranged in the intermediate airway cavity at intervals along the longitudinal direction of the hull frame, the upper and lower ends of the transverse support plates are respectively connected to the intermediate deck and the intermediate airway platform, and the length of the transverse support plates is smaller than the width of the intermediate airway platform; a longitudinal air outlet extending along the longitudinal direction of the hull frame is provided on the intermediate airway platform, the upper side of the longitudinal air outlet is communicated with the intermediate airway cavity, and the lower side of the longitudinal air outlet is communicated with the hull frame; The built-in side air duct includes a side air duct platform, a side deck and a support assembly, the side air duct platform is installed on the upper side of the hull frame, the support assembly is connected to the outside of the side air duct platform, the lateral sides of the side deck are respectively connected to the longitudinal bulkhead and the support assembly, the side air duct platform, the side deck, the support assembly and the longitudinal bulkhead form a side air duct cavity, the side deck is provided with an air inlet, and the support assembly is provided with an air vent; the side air duct platform and the intermediate air duct platform are both provided with lateral air outlets extending along the lateral direction of the hull frame, and the lateral air outlets on both sides are respectively connected with the longitudinal air outlets. The upper sides of the transverse air outlets are connected to the intermediate air duct cavity and the side air duct cavity, and the lower sides of the transverse air outlets are connected to the hull frame; the support assembly includes a plurality of vertical support circular tubes arranged at intervals, and an oblique support circular tube is provided between two adjacent vertical support circular tubes, and the gaps between adjacent vertical support circular tubes and the oblique support circular tubes form the air vents; a plurality of support circular tubes are provided in the intermediate air duct cavity and the side air duct cavity, and reinforcing elbow plates are respectively provided between the vertical support circular tubes and the side air duct platform and the side deck, and reinforcing elbow plates are respectively provided between the oblique support circular tubes and the side air duct platform and the side deck.

2. The high-pressure built-in airway structure according to claim 1, characterized in that: The transverse supporting plate spans the longitudinal air outlet.

3. The high-pressure built-in airway structure according to claim 1, characterized in that: The side deck is provided with two air inlets spaced apart in the longitudinal direction, and the longitudinal bulkhead is provided with a plurality of air holes.

4. The high-pressure built-in airway structure according to claim 1, wherein: A reinforcement ring is provided around the air hole.

5. The high-pressure built-in airway structure according to claim 1, characterized in that: The lower surface of the middle deck and the lower surface of the side deck are both provided with longitudinal T-shaped stiffeners arranged along the longitudinal extension of the hull frame and transverse T-shaped stiffeners arranged along the transverse extension of the hull frame.

6. The high-pressure built-in airway structure according to claim 1, characterized in that: Reinforcement plates are provided between the longitudinal bulkhead and the intermediate airway platform and the side deck, respectively, and a reinforcement plate is provided between the transverse support plate and the intermediate airway platform.

7. The high-pressure built-in airway structure according to any one of claims 1 to 6, characterized in that: An air duct communicating with and cooperating with the longitudinal air outlet and the transverse air outlet is provided in the hull frame.

8. A welding method for the high-pressure built-in air duct structure according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Assemble the middle airway platform and the side airway platform to form a high-pressure airway platform, and install the high-pressure airway platform on the hull frame; Step 2: Install two longitudinal bulkheads symmetrically on the intermediate airway platform, and install transverse support plates at intervals along the longitudinal direction on the intermediate airway platform; Step 3: Install the two sets of support components on the outside of the side airway platform respectively; Step 4: Assemble the middle deck and the side deck to form the upper deck, and connect and fix the upper deck to the longitudinal bulkhead, transverse support plate and support assembly; Step 5: Perform precision inspection and non-destructive testing on the high-pressure built-in airway structure.

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