Composite material bulkhead penetration installation structure and method

Abstract

The application discloses a kind of composite material bulkhead cabin piece installation structure and method, cabin piece installation structure includes metal cabin piece, composite material sleeve, fireproof blocking material and fireproof filler, metal inner tube passes through composite material sleeve, wherein, the length of composite material sleeve is shorter than the length of metal inner tube, the inner diameter of composite material sleeve is greater than the outer diameter of metal inner tube;Fireproof blocking material is blocked at the end gap of the overlapping part of composite material sleeve and metal inner tube, and fireproof filler is filled in the gap between composite material sleeve and metal inner tube.The application realizes the isolation of metal cabin piece and composite material bulkhead by introducing composite material sleeve at cabin site, and the connection strength is enhanced by hand paste;Fireproof material filling can effectively realize regional fireproof shock absorption.This technology can be used for the installation of electrical, pipeline, ventilation and other professional cabin structures on the composite material cabin of ship, effectively meet the needs of fireproof, insulation, firm of outfitting on the composite material cabin.

Description

Technical Field

[0001] This invention relates to the field of ship outfitting technology, specifically to an installation process for a composite material compartment through-cabin structure. Background Technology

[0002] With the rapid development of the shipbuilding industry and the increasing demands for lightweight hulls and integrated structural performance, the application of composite materials in ships is gradually increasing. As the functional requirements of new ships increase, the number of through-hull structures such as pipes and cables is also gradually increasing, and the corresponding requirements for sealing and fireproofing are constantly rising. For traditional steel hulls, welding is often used to install through-hull components, but this method is not suitable for installing through-hull components on composite material compartments. Currently, the most direct way to install through-hull components on composite material compartments is to directly pass the metal through-hull components through the bulkhead and deck openings and fix them with adhesive. Although this installation method is relatively convenient, the thickness of the composite material bulkhead is limited, which means a small bonding area, weak vibration resistance, and problems such as cracking during long-term use. Furthermore, the direct contact between the metal through-hull components and the composite material bulkhead poses risks in terms of insulation and fireproofing. Therefore, it is necessary to design an installation method suitable for through-hull structures in composite material compartments, while meeting the requirements for fireproofing, insulation, and robustness in the outfitting of composite material compartments, to solve problems such as low connection strength and substandard fireproofing and insulation performance after installation of through-hull structures in composite material compartments. Summary of the Invention

[0003] In view of this, the present invention proposes a composite material cabin through-cabin structure and installation method to solve the problems of low connection strength and substandard fire resistance and insulation performance after installation of the composite material cabin through-cabin structure.

[0004] A composite material bulkhead through-hole component installation structure includes a metal through-hole component, a composite material sleeve, fireproof filler, fireproof sealant, adhesive, and reinforcing material. The adhesive is fixed between the composite material bulkhead and the composite material sleeve. The reinforcing material is L-shaped and adhered to the composite material bulkhead and wrapped around the composite material sleeve, and fixed at the junction of the composite material bulkhead and the composite material sleeve. The metal through-hole component passes through the composite material sleeve, wherein the length of the composite material sleeve is shorter than the length of the metal through-hole component, and the inner diameter of the composite material sleeve is larger than the outer diameter of the metal through-hole component. The fireproof sealant fills the gaps at both ends of the overlapping portion of the composite material sleeve and the metal through-hole component, and the fireproof filler fills the gaps between the composite material sleeve, the metal through-hole component, and the fireproof sealant.

[0005] Furthermore, the longitudinal cross-sectional shape of the metal penetration component is circular, rectangular, or irregular, and the longitudinal cross-sectional shape of the composite material sleeve is adapted to the shape of the metal penetration component; the introduction of the composite material sleeve can meet the insulation requirements of the composite material compartment outfitting, while improving the structural strength of the penetration part and achieving regional protection and isolation.

[0006] Furthermore, the fire-retardant filler is a hydrated magnesium chloride inorganic fire-retardant filler; the hydrated magnesium chloride filler can effectively achieve regional fire prevention, while also being elastic, effectively isolating the rigid collision between the metal penetration parts and the composite material wall panel caused by vibration, avoiding wear of the composite material, and extending its service life.

[0007] Furthermore, the fire-resistant sealant is an aluminum phosphate-based organic fire-resistant filler.

[0008] Furthermore, there is a gap D between the outer diameter of the metal through-hole component and the inner diameter of the composite material sleeve, with the gap range being 6mm≤D≤10mm.

[0009] Preferably, the outer diameter or side length of the metal through-hole component is less than 300 mm.

[0010] A method for installing a composite material bulkhead through-barrel component includes the following steps:

[0011] S1: Determine the specifications, dimensions, and shape of the metal penetration parts, and manufacture the corresponding specifications of metal penetration parts and composite material sleeves;

[0012] S2: Open a through hole at the part of the composite material bulkhead, pass the composite material sleeve through the through hole, install it vertically inside the composite material bulkhead, and use adhesive to initially fix the composite material bulkhead and the composite material sleeve. The composite material sleeve extends 20mm-30mm beyond the outer plane of the composite material bulkhead on both the left and right sides.

[0013] S3: After the adhesive has cured, the connection between the inner side of the through hole of the composite material cabin and the outer wall of the composite material sleeve is treated with hand lay-up reinforcement material. The hand lay-up treatment can be adapted to different shapes and sizes of composite material sleeves and through holes of composite material cabin walls as needed.

[0014] S4: The metal penetration component passes through the composite material sleeve, and the gaps at both ends of the composite material sleeve and the metal penetration component are filled with fireproof sealant.

[0015] S5: Drill a small hole at the top of the composite material sleeve. The diameter of the hole should not be less than 5mm. Pour the fireproof filler into the small hole to fill and seal the gap between the composite material sleeve and the metal penetration part. The fireproof filler is liquid before curing and can flow to fill the gap, making the filling more uniform. This makes the force more uniform during the rigid collision between the metal penetration part and the composite material sleeve.

[0016] Furthermore, in step S2, before fixing with adhesive, the outer surface of the composite material sleeve is roughened; the adhesive is a vinyl structure adhesive.

[0017] Furthermore, in step S3, the reinforcing material is specifically a high-strength glass fiber fabric and resin composite material. The reinforcing material is longitudinally bonded to the outer wall of the composite material bulkhead and laterally wrapped around the outer wall of the composite material sleeve, with a hand lay-up layer of no less than 3 layers.

[0018] Preferably, the composite material bulkhead and the composite material sleeve have the same matrix; the resin system used for the adhesive and reinforcing material is compatible with the resin system of the composite material bulkhead and the composite material sleeve.

[0019] Compared with existing technologies, the composite material bulkhead through-cabin component installation structure and method described in this invention have the following advantages:

[0020] 1) Composite sleeves are used to isolate and insulate metal penetration parts from composite bulkheads or decks, and hand lay-up reinforcement is used to enhance the connection strength. The composite sleeves are longer than the thickness of the composite bulkheads or decks, which increases the bonding and fixing area of ​​the penetration parts and effectively improves the firmness. At the same time, the hand lay-up process can meet the design requirements of different shapes and sizes as needed, making the process more flexible.

[0021] 2) By filling the space between the metal penetration component and the composite material sleeve with fireproof sealant and fireproof filler, area fireproofing is effectively achieved. The elastic filler, after curing, isolates the rigid collision between the metal penetration component and the composite material caused by vibration. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the composite material bulkhead through-cabin installation structure according to an embodiment of the present invention.

[0023] Figure label:

[0024] 1. Metal penetration component; 2. Composite material bulkhead; 3. Composite material sleeve; 4. Fireproof filler; 5. Fireproof sealant; 6. Adhesive; 7. Reinforcing material. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] A composite material bulkhead through-tank installation structure is disclosed, applicable to the installation of electrical, piping, and ventilation through-tank structures on ship composite material bulkheads. The through-tank installation structure includes a metal through-tank component 1, a composite material sleeve 3, fireproof sealant 4, fireproof filler 5, adhesive 6, and reinforcing material 7. Adhesive 6, specifically a vinyl ester system adhesive, is fixed between the composite material bulkhead 2 and the composite material sleeve 3, providing initial fixation to the composite material bulkhead 2 and the composite material sleeve 3. The reinforcing material 7 is a high-strength glass fiber fabric and resin composite material, with the same resin system as adhesive 6, composite material sleeve 3, and composite material bulkhead 2 (or deck). The reinforcing material 7 is L-shaped and adhered to the composite material bulkhead 2 and wrapped around the composite material sleeve 3, fixed at the junction of the composite material bulkhead 2 and the composite material sleeve 3, specifically longitudinally. On the outer wall of the composite material bulkhead 2, it is transversely wrapped around the outer wall of the composite material sleeve 3, with both longitudinal and transverse lengths not less than 20mm. The resin system of the reinforcing material 7 is the same as the resin matrix of the composite material bulkhead 2 and the composite material sleeve 3, which can effectively improve the fixing and connection strength between the two. The metal through-hole component 1 passes through the composite material sleeve 3, wherein the length of the composite material sleeve 3 is shorter than the length of the metal through-hole component 1, and there is a gap D between the outer diameter of the metal through-hole component 1 and the inner diameter of the composite material sleeve 3, with a gap range of 6mm≤D≤10mm. The longitudinal cross-sectional shape of the metal through-hole component 1 is circular, rectangular or irregular structure, which is suitable for the installation of metal through-hole components 1 with an outer diameter or side length of less than 300mm. The shape of the composite sleeve 3 is adapted to the shape of the metal penetration component 1. Compared with the metal penetration component 1 being directly bonded to the composite bulkhead 2, the introduction of the composite sleeve 3 can meet the insulation requirements of the composite compartment outfitting. At the same time, the composite sleeve 3 and the composite wall panel (bullet or deck) 2 have the same matrix, and the bonding strength between the two is higher than the connection strength between the composite wall panel 2 and the metal penetration component 1.

[0028] Fire-resistant sealant 5 is an aluminum phosphate-based organic fire-resistant sealant. Before curing, it is in a putty-like state, malleable but not flowable. Fire-resistant sealant 4, in its putty state, is used to fill the transverse gaps at both ends of the overlapping portion of the composite material sleeve 3 and the metal penetration component 1. After curing, the composite material sleeve 3, the metal penetration component 1, and the fire-resistant sealant 5 form a sealed space, ensuring good sealing performance and insulation of the penetration component installation structure. Fire-resistant filler 5 is a hydrated magnesium chloride filler. Before curing, it is liquid and can flow and fill the gaps between the composite material sleeve 3, the metal penetration component 1, and the fire-resistant sealant 5. Due to the flowability of the fire-resistant filler 5, it can evenly coat the gaps during filling. Furthermore, the cured fire-resistant filler 5 is elastic, which can prevent rigid collisions between the metal penetration component 1 and the composite material sleeve 3 caused by vibration. The combined effect of fire-resistant sealant 4 and fire-resistant filler 5 effectively achieves regional fireproofing and vibration reduction for the penetration component.

[0029] A method for installing a composite material bulkhead through-barrel component includes the following steps:

[0030] S1: Determine the specifications, dimensions and shape of the metal penetration component 1, and manufacture the metal penetration component 1 and composite material sleeve 3 of the corresponding specifications.

[0031] S2: A through hole is made at the part of the composite material bulkhead 2 that penetrates the bulkhead. The composite material sleeve 3 is passed through the through hole and installed vertically inside the composite material bulkhead 2. The gap between the two is 1-2mm (the gap facilitates the application and fixation of the adhesive 6). The adhesive 6 is used to initially fix the inside of the through hole of the composite material bulkhead 2 and the outer wall of the composite material sleeve 3. The left and right ends of the composite material sleeve 3 extend 20mm-30mm beyond the outer plane of the composite material bulkhead 2. Before fixing with the adhesive 6, the outer surface of the composite material sleeve 3 is roughened to increase the roughness so that the adhesive 6 can maximize its fixing effect. The adhesive 6 is a vinyl ester structural adhesive.

[0032] S3: After the adhesive 6 has cured, the connection between the composite material bulkhead 2 and the composite material sleeve 3 is treated with hand lay-up reinforcing material 7. Reinforcing material 7 is specifically a high-strength glass fiber fabric and resin composite material. After hand lay-up molding, reinforcing material 7 is L-shaped and is fixed to the junction of the composite material bulkhead 2 and the composite material sleeve 3. Specifically, reinforcing material 7 is longitudinally bonded to the outer wall of the composite material bulkhead 2 and laterally wrapped around the outer wall of the composite material sleeve 3. The transverse and longitudinal lengths of reinforcing material 7 are both 20mm. The number of hand lay-up layers is no less than 3.

[0033] S4: The metal penetration component 1 passes through the composite material sleeve 3. Fireproof sealant 5 is used to fill the gaps at both ends of the composite material sleeve 3 and the metal penetration component 1, so that the metal penetration component 1, the composite material sleeve 3 and the fireproof sealant 5 form a sealed space.

[0034] S5: Drill a small hole with a diameter of 5-8mm at the upper end of the composite material sleeve 3, pour the fireproof filler 4 into the small hole, and fill and seal the gap between the composite material sleeve 3, the metal penetration part 1 and the fireproof sealant 5. The fireproof filler 4 is liquid before curing and can flow to fill the gap, making the filling more uniform, and thus making the force more uniform during the rigid collision between the metal penetration part 1 and the composite material sleeve 3.

[0035] Example 1

[0036] A through-hole with an outer diameter of 170 mm is made at the passage of the composite material bulkhead 2. A composite material sleeve 3 of the corresponding specifications is then fabricated. The composite material sleeve 3 is made of glass fiber, carbon fiber, or carbon-glass hybrid reinforced resin through winding molding or vacuum-assisted molding. Specifically, it is a fiberglass tube with a longitudinal circular shape, an outer diameter of 166 mm, and a thickness of 5 mm. The composite material sleeve 3 is passed through the through-hole and vertically installed inside the composite material bulkhead 2. The left and right ends of the composite material sleeve 3 extend 25 mm beyond the outer plane of the composite material bulkhead 2. The length of the composite material sleeve 3 is shorter than the length of the metal passage component 1. After the composite material sleeve 3 is inserted into the composite material bulkhead 2, the gap between the two is 2 mm. At this time, a vinyl ester structural adhesive is used to initially fix the composite material bulkhead 2 and the composite material sleeve 3. The vinyl ester structural adhesive is compatible with the resin system used in the molding of the composite material bulkhead 2 and the composite material sleeve 3.

[0037] After the adhesive has cured, three layers of high-strength glass fiber fabric and resin composite material are hand-laid into the connection between the inner side of the through-hole of the composite bulkhead 2 and the outer wall of the composite sleeve 3 to enhance the connection strength between the composite bulkhead 2 and the composite sleeve 3. The reinforcing material 7, after hand lay-up molding, is L-shaped and connected and fixed around the junction of the composite bulkhead 2 and the composite sleeve 3. The L-shaped reinforcing material 7 is longitudinally attached to the outer wall of the composite bulkhead 2 and laterally wrapped around the outer wall of the composite sleeve 3, with both the lateral and longitudinal lengths of the reinforcing material 7 being 20mm. Because the composite sleeve 3 and the composite bulkhead 2 (bullet panel or deck) share the same matrix, the hand lay-up connection strength between them is higher than the connection strength between the composite bulkhead 2 and the metal through-hole component 1.

[0038] A metal penetration piece 1 with an outer diameter of 140mm is passed through a composite material sleeve 3. Fireproof sealant 5 is used to fill the gaps at both ends of the composite material sleeve 3 and the metal penetration piece 1, and the gap between the metal penetration piece 1 and the composite material sleeve 3 is controlled to be 8mm. Two small holes with a diameter of 5mm are drilled at the upper end of the composite material sleeve 3. Fireproof filler 4 is poured into the small holes to fill the gap between the composite material sleeve 3 and the metal inner tube 1. The fireproof filler 4 is liquid before curing and can flow to fill the gap, making the filling more uniform and achieving fireproof sealing. At the same time, it is elastic and effectively isolates the rigid collision between the metal penetration piece 1 and the composite material wall panel 2 caused by vibration, avoids the wear of the composite material wall panel 2, and extends its service life.

[0039] Example 2

[0040] A rectangular hole with a side length of 200mm × 100mm is made at the through-hole of the composite material bulkhead 2. A composite material sleeve 3 of the corresponding specifications is then fabricated. The composite material sleeve 3 is specifically a fiberglass pipe with a rectangular longitudinal cross-section, an outer side length of 196mm × 96mm, and a thickness of 5mm. The composite material sleeve 3 is passed through the through hole and vertically installed inside the composite material bulkhead 2. The left and right ends of the composite material sleeve 3 extend 25mm beyond the outer plane of the composite material bulkhead 2. The length of the composite material sleeve 3 is shorter than the length of the metal through-hole component 1. After the composite material sleeve 3 is inserted into the composite material bulkhead 2, the gap between the two is 2mm. At this time, a vinyl ester structural adhesive is used to initially fix the composite material bulkhead 2 and the composite material sleeve 3. The vinyl ester structural adhesive is compatible with the resin system used in the molding of the composite material bulkhead 2 and the composite material sleeve 3.

[0041] After the adhesive has cured, three layers of high-strength glass fiber fabric and resin composite material are hand-laid into the connection between the inner side of the through-hole of the composite material bulkhead 2 and the outer wall of the composite material sleeve 3 to enhance the connection strength between the composite material bulkhead 2 and the composite material sleeve 3. The L-shaped reinforcing material 7 is longitudinally bonded to the outer wall of the composite material bulkhead 2 and laterally wrapped around the outer wall of the composite material sleeve 3. The transverse and longitudinal lengths of the reinforcing material 7 are both 23 mm. After hand lay-up molding, the reinforcing material 7 is L-shaped and connected and fixed at the junction of the composite material bulkhead 2 and the composite material sleeve 3.

[0042] A metal penetration piece 1 with an outer side length of 170mm × 70mm is passed through a composite material sleeve 3. Fireproof sealant 5 is used to fill the gaps at both ends of the composite material sleeve 3 and the metal penetration piece 1, and the gap between the metal penetration piece 1 and the composite material sleeve 3 is controlled to be 8mm. Two small holes with a diameter of 5mm are drilled at the upper end of the composite material sleeve 3, and fireproof filler 4 is poured into the small holes to fill the gap between the composite material sleeve 3 and the metal inner tube 1.

[0043] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A composite material bulkhead through-cabin component installation structure, characterized in that, The through-hull installation structure includes a metal through-hull component (1), a composite material sleeve (3), fireproof filler (4), fireproof sealant (5), adhesive (6), and reinforcing material (7); the adhesive (6) is fixed between the composite material bulkhead (2) and the composite material sleeve (3), and the reinforcing material (7) is L-shaped and attached to the composite material bulkhead (2) and wrapped around the composite material sleeve (3), and fixed at the junction of the composite material bulkhead (2) and the composite material sleeve (3); the metal through-hull component (1) passes through the composite material sleeve (3), wherein the length of the composite material sleeve (3) is shorter than the length of the metal through-hull component (1). The inner diameter of the composite material sleeve (3) is larger than the outer diameter of the metal penetration part (1); the fireproof sealant (5) is filled at both ends of the overlapping part of the composite material sleeve (3) and the metal penetration part (1), and the fireproof filler (4) is filled in the gap between the composite material sleeve (3), the metal penetration part (1) and the fireproof sealant (5); the fireproof filler (4) can be evenly covered in the gap during the filling process, and the fireproof filler (4) after curing is elastic; the fireproof filler (4) is a hydrated magnesium chloride inorganic fireproof filler, which is liquid before curing, and the fireproof sealant (5) is an aluminum phosphate organic fireproof filler, which is putty before curing.

2. The through-cabin component installation structure according to claim 1, characterized in that, The longitudinal cross-sectional shape of the metal penetration component (1) is circular, rectangular or irregular, and the longitudinal cross-sectional shape of the composite material sleeve (3) is adapted to the shape of the metal penetration component (1).

3. The through-cabin component installation structure according to claim 1, characterized in that, There is a gap D between the outer diameter of the metal through-hole component (1) and the inner diameter of the composite material sleeve (3), with a gap range of 6mm≤D≤10mm.

4. The through-cabin component installation structure according to claim 1, characterized in that, The outer diameter or side length of the metal through-hole component (1) is less than 300 mm.

5. A method for installing through-cabin components of a composite material bulkhead, characterized in that, Using the composite material bulkhead through-hull component installation structure according to any one of claims 1 to 4, the through-hull component installation method includes the following steps: S1: Determine the specifications, dimensions and shape of the metal through-hole component (1), and manufacture the corresponding specifications of the metal through-hole component (1) and composite material sleeve (3); S2: Open a through hole at the part of the composite material bulkhead (2), pass the composite material sleeve (3) through the through hole, and install it vertically inside the composite material bulkhead (2). Use adhesive (6) to initially fix the composite material bulkhead (2) and the composite material sleeve (3), wherein the composite material sleeve (3) extends 20mm-30mm beyond the outer plane of the composite material bulkhead (2) on both the left and right sides. S3: After the adhesive (6) has cured, the joint between the composite material cabin wall (2) and the composite material sleeve (3) is treated with hand lay-up reinforcing material (7). S4: The metal penetration piece (1) passes through the composite material sleeve (3), and the gaps at both ends of the composite material sleeve (3) and the metal penetration piece (1) are filled with fireproof sealant (5); S5: Drill a small hole at the upper end of the composite material sleeve (3), pour fireproof filler (4) into the small hole, and fill and seal the gap between the composite material sleeve (3) and the metal penetration part (1).

6. The installation method according to claim 5, characterized in that, In step S2, before fixing with adhesive (6), the outer surface of the composite material sleeve (3) is roughened; the adhesive (6) is a vinyl structure adhesive.

7. The installation method according to claim 5, characterized in that, In step S3, the reinforcing material (7) is specifically a high-strength glass fiber fabric and resin composite material. The reinforcing material (7) is longitudinally attached to the outer wall of the composite material cabin wall (2) and laterally wrapped on the outer wall of the composite material sleeve (3). The longitudinal length and the lateral length are both not less than 20 mm; the number of hand lay-up layers is not less than 3 layers.

8. The installation method according to claim 5, characterized in that, The composite material bulkhead (2) and the composite material sleeve (3) have the same matrix; the resin system used for the adhesive (6) and the reinforcing material (7) is compatible with the resin system of the composite material bulkhead (2) and the composite material sleeve (3).

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