Protective joint capable of meeting fireproof requirement for connection between marine flange floor drain and plastic pipe

Abstract

The invention discloses a protective joint capable of meeting fireproof requirements for connection between a marine flange floor drain and a plastic pipe. The protective joint comprises a steel housing and a steel flange, the number of the steel flanges is two, one steel flange is connected with the flange floor drain, and the other steel flange is connected with the plastic pipe. The two steel flanges are connected through a first fastener; the steel housing is arranged at the joint between the flange floor drain and the plastic pipe and wraps the joint between the flange floor drain and the plastic pipe; the steel cover shell is filled with a fire retardant belt. The upper surface and the lower surface of the fire-retardant belt are sealed through fireproof sealant. The connecting device is used for connecting the flange floor drain and the plastic pipe, and therefore the fireproof cabin penetrating requirement of SOLAS convention requirements is met.

Description

Technical Field

[0001] The invention relates to a fireproof joint between a flange floor drain and a plastic pipe on a Class A fireproof deck, and more particularly to a protective joint between a marine flange floor drain and a plastic pipe which meets fireproof requirements. Background Art

[0002] In ships, floor drains are installed in the upper construction area for domestic water discharge. At the same time, considering the weight reduction and corrosion resistance advantages of ships, water pipes in the upper construction area are usually plastic pipes. Therefore, the connection between the floor drain in the upper construction area and the plastic pipe is a conventional connection. However, when the floor drain is installed on the Class A fire deck of the upper construction deck, according to the requirements of the SOLAS Convention, when the metal pipe passes through the Class A deck, the continuous length of the metal pipe needs to meet the requirements of 450mm on one side or 900mm on at least one side. For the upper construction area, considering the low height of the upper construction, the length of the metal pipe of the floor drain cannot meet the requirements of 900mm. Therefore, when the flange type floor drain is connected to the plastic pipe, it cannot meet the fire protection requirements of the regulations and conventions. This has greatly restricted the floor drains installed on board, especially if the deck fire protection level is changed during the design stage or the on-site ship inspection stage, and the relevant pipeline fire protection changes are made, it will inevitably incur very large rework costs and may delay the construction period, resulting in serious consequences of delayed delivery of the ship. Summary of the invention

[0003] In view of the defects existing in the prior art, the purpose of the present invention is to provide a protective joint that meets the fire protection requirements for connecting the flange floor drain and the plastic pipe of a ship, so as to meet the fire protection penetration requirements of the SOLAS Convention.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A protective joint for connecting a marine flange floor drain with a plastic pipe and meeting fire protection requirements, comprising a steel cover and a steel flange;

[0006] There are two steel flanges, one of which is connected to the flange floor drain, and the other is connected to the plastic pipe;

[0007] The two steel flanges are connected by a first fastener;

[0008] The steel cover is arranged at the connection between the flange floor drain and the plastic pipe, and wraps the connection between the flange floor drain and the plastic pipe;

[0009] The interior of the steel casing is filled with a fire barrier strip;

[0010] The upper surface and the lower surface of the fire barrier strip are both sealed by fireproof sealant.

[0011] Preferably, the steel cover shell comprises a steel circular plate and a steel circular tube;

[0012] The steel round pipe is arranged at the connection between the flange floor drain and the plastic pipe;

[0013] The steel circular plate is arranged at the top position of the steel circular tube;

[0014] The steel circular plate is provided with bolt holes for the first fastener to pass through.

[0015] Preferably, the steel cover shell is configured as a symmetrical half structure, and the two pieces of the steel round tube are connected by a second fastener.

[0016] Preferably, the thickness of the steel circular plate is greater than or equal to 3 mm;

[0017] The thickness of the steel round tube is greater than or equal to 3 mm.

[0018] Preferably, both of the two steel round tubes are provided with holes for filling fireproof sealant.

[0019] Preferably, the thickness of the fire barrier strip is greater than or equal to 51 mm, and the filling height is greater than or equal to 110 mm.

[0020] Preferably, the thickness of the fireproof sealant is greater than or equal to 12.7 mm.

[0021] Preferably, a fireproof gasket is provided between the two steel flanges.

[0022] The present invention provides a protective joint that meets fire protection requirements for connecting a marine flange floor drain with a plastic pipe. The flange floor drain can be directly installed on a fireproof deck and can be directly connected to a plastic pipe through the protection of the patented joint, thereby meeting the requirements of ship specifications and regulations, reducing on-site construction and rework, and greatly improving ship construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the protective joint of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a steel cover shell in a protective joint of the present invention;

[0025] Figure 3 yes Figure 2 Schematic diagram of the steel circular plate structure of the steel cover;

[0026] Figure 4 yes Figure 2 Schematic diagram of the steel circular tube structure of the Sinosteel cover. DETAILED DESCRIPTION

[0027] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Combination Figure 1 As shown, the present invention provides a protective joint for connecting a marine flange floor drain with a plastic pipe that meets fire protection requirements, comprising a steel cover 4 and a steel flange 5.

[0029] Two steel flanges 5 are provided, one of which is connected to the flange floor drain 1 , and the other is connected to the plastic pipe 9 .

[0030] The two steel flanges 5 are connected by a first fastener 3 (bolt and nut assembly).

[0031] A fireproof gasket 6 is also arranged between the two steel flanges 5 .

[0032] The top surface of the flange floor drain 1 is flush with the plane of the Class A fireproof deck.

[0033] The steel cover shell 4 is arranged at the connection between the flange floor drain 1 and the plastic pipe 9 , and wraps the connection between the flange floor drain 1 and the plastic pipe 9 .

[0034] The interior of the steel shell 4 is filled with a fire-blocking strip 7, which is used to penetrate the Class A wall and the cabin. The thickness of the fire-blocking strip 7 is greater than or equal to 51 mm, and the filling height is greater than or equal to 110 mm.

[0035] The upper surface and the lower surface of the fire barrier strip 7 are both sealed by a fireproof sealant 8. The fireproof sealant 8 is used to penetrate the A-class wall and the cabin. The thickness of the fireproof sealant 8 is greater than or equal to 12.7 mm.

[0036] Combination Figures 2 to 4 As shown, the steel cover shell 4 includes a steel circular plate 401 and a steel circular tube 402 .

[0037] The steel round pipe 402 is wrapped around the connection between the flange floor drain 1 and the plastic pipe 9 .

[0038] The steel circular plate 401 is disposed at the top of the steel circular tube 402;

[0039] The steel circular plate 401 is provided with a plurality of bolt holes 403 for the first fasteners 3 to pass through.

[0040] The steel cover shell 4 is configured as a symmetrical half structure (symmetrically cut into two halves), and the two steel round tubes 401 are connected by two sets of second fasteners 404 (flange, bolts and steel pad assemblies).

[0041] The thickness of the steel circular plate 401 is greater than or equal to 3 mm.

[0042] The thickness of the steel round tube 402 is greater than or equal to 3 mm.

[0043] Both steel round tubes 402 are provided with fireproof sealant filling holes 405 .

[0044] When the protective joint of the present invention is installed, the steel circular plate 401 and the steel circular pipe 402 in the steel cover 4 are separated. In the first step, the steel circular plate 401, the steel flange 5, the fireproof gasket 6, and the plastic pipe 9 are fixed by the first fastener 3; in the second step, the fireproof tape 7 is wrapped around the plastic pipe 9; in the third step, the steel circular pipe 402 is welded to the steel circular plate 401; in the fourth step, the fireproof sealant 8 is filled through the fireproof sealant filling hole 405 and the bottom of the steel cover 4, so as to completely cover and seal the connection part between the plastic pipe 9 and the flange floor drain 1.

[0045] After the protective joint of the present invention is installed, the connection between the plastic pipe 9 and the floor drain steel flange 1 is completely wrapped by the fireproof tape 7, the fireproof sealant 8 and the steel cover 4. When the outside is on fire, the thermal expansion of the fireproof sealant 8 and the fireproof tape 7 can achieve channel blocking, thereby preventing the fire from breaking through the Class A fireproof deck 2 within the regulatory time, ensuring the fireproof integrity of the Class A fireproof deck 2, and thus meeting the SOLAS regulatory requirements.

[0046] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A protective joint between a marine flange floor drain and a plastic pipe that meets fire protection requirements, characterized in that: Includes steel housing and steel flange; There are two steel flanges, one of which is connected to the flange floor drain, and the other is connected to the plastic pipe; The two steel flanges are connected by a first fastener; The steel cover is arranged at the connection between the flange floor drain and the plastic pipe, and wraps the connection between the flange floor drain and the plastic pipe; The interior of the steel casing is filled with a fire barrier strip; The upper surface and the lower surface of the fire barrier strip are both sealed by fireproof sealant.

2. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 1 is characterized in that: The steel cover shell includes a steel circular plate and a steel circular tube; The steel round pipe is arranged at the connection between the flange floor drain and the plastic pipe; The steel circular plate is arranged at the top position of the steel circular tube; The steel circular plate is provided with bolt holes for the first fastener to pass through.

3. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 2 is characterized by: The steel cover shell is configured as a symmetrical half structure, and the two pieces of the steel round tube are connected by a second fastener.

4. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 2 is characterized by: The thickness of the steel circular plate is greater than or equal to 3 mm; The thickness of the steel round tube is greater than or equal to 3 mm.

5. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 3 is characterized by: Fireproof sealant filling holes are provided on the two steel round tubes.

6. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 1 is characterized by: The thickness of the fire barrier strip is greater than or equal to 51 mm, and the filling height is greater than or equal to 110 mm.

7. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 1 is characterized by: The thickness of the fireproof sealant is greater than or equal to 12.7 mm.

8. The protective joint for connecting the marine flange floor drain and the plastic pipe that meets the fire protection requirements according to claim 1 is characterized by: A fireproof gasket is also arranged between the two steel flanges.

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