Plugging structure for A-level separation position of long cable tube

Abstract

The utility model relates to a plugging structure for an A-level separation position of a long cable tube, which comprises a first cable tube, a second cable tube and two expansion blocks arranged in the first cable tube and the second cable tube, and the A-level separation position is positioned on one side, close to the second cable tube, of the first cable tube. The first cable pipe and the second cable pipe are connected through a butt joint flange, a filling and blocking pipe is arranged on the side wall of the second cable pipe, and an air hole is formed in the side wall, directly connected with the butt joint flange, of the second cable pipe. The two expansion blocks are arranged in a port of one end, close to the butt flange, of the first cable pipe and in the second cable pipe respectively, and the air hole and the filling and blocking pipe are located between the two expansion blocks. The plugging structure for the A-level separation position of the long cable pipe is simple in structure, low in manufacturing cost and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shipbuilding technical field, especially relate to a plugging structure for A-class division of long cable pipe. BACKGROUND

[0002] Cable fire is a big threat to expensive operating equipment, cable data processing equipment and ship navigation, and it is particularly important to effectively prevent fire spreading and do well in cable fireproof plugging of A-class division. During shipbuilding, the owner and ship inspection often question the actual effect of fireproof plugging in long cable pipe, and the tightness test done on site cannot meet the air and watertight requirements set by the plugging material manufacturer, resulting in rejection and rectification. The reason is that the common long cable pipe is not provided with a plugging pipe, and the expansion blocks on both sides of the air hole cannot make the filler tightly fill the effective plugging space, so that the plugging effect cannot meet the air and watertight A-class fireproof requirements. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the utility model provides a plugging structure for A-class division of long cable pipe, which is simple in structure, low in cost and convenient to install.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A plugging structure for A-class division of long cable pipe, comprising a first cable pipe, a second cable pipe and two expansion blocks arranged in the first cable pipe and the second cable pipe, wherein the A-class division is located on one side of the first cable pipe close to the second cable pipe, the first cable pipe and the second cable pipe are connected through a butt flange, a plugging pipe is arranged on the side wall of the second cable pipe, an air hole is arranged on the side wall of the second cable pipe directly between the plugging pipe and the butt flange, the two expansion blocks are arranged in the port of the first cable pipe close to one end of the butt flange and in the second cable pipe respectively, and the air hole and the plugging pipe are located between the two expansion blocks.

[0006] Further, a branch pipe is arranged on the side wall of the first cable pipe, a blind flange is arranged on the free end of the branch pipe, and the branch pipe is located on the side of the A-class division away from the butt flange.

[0007] Further, the air hole and the plugging pipe are located on the same side of the central axis of the second cable pipe, and the axis of the air hole and the axis of the plugging pipe are arranged in parallel.

[0008] Further, the air hole is located between the plugging pipe and the butt flange.

[0009] Further, the single flange in the butt joint method is double full weld connected with the first cable tube and the second cable tube; the blind flange is double full weld connected with the branch pipe.

[0010] Further, a cable tube sleeve is arranged outside the pipe wall at the A-class separation.

[0011] The plugging structure for the A-class separation of the long cable tube has the advantages of simple structure, low cost, convenient installation, convenient realization of filling of the expansion block and tight filling of the filler after the flange is closed, and completion of the fireproof separation and plugging requirement of the A-class separation of the long cable tube. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a perspective view of the plugging structure for the A-class separation of the long cable tube.

[0013] Fig. 2 is a longitudinal sectional view of the plugging structure for the A-class separation of the long cable tube.

[0014] Among them, 1 is a first cable tube, 2 is a cable tube sleeve, 3 is a butt joint flange, 4 is a filling pipe, 5 is a gas permeation hole, 6 is a blind flange, 7 is a branch pipe, 8 is a second cable tube, and 9 is an expansion block. DETAILED DESCRIPTION

[0015] The utility model will be further described in connection with the drawings and specific embodiments.

[0016] As Figs. 1-2 shown, a plugging structure for the A-class separation of a long cable tube, comprising a first cable tube 1, a second cable tube 8 and two expansion blocks 9 arranged in the first cable tube 1 and the second cable tube 8, the A-class separation is located on the side of the first cable tube 1 close to the second cable tube 8, a cable tube sleeve 2 is arranged outside the pipe wall at the A-class separation; the first cable tube 1 and the second cable tube 8 are connected through a butt joint flange 3, a filling pipe 4 is arranged on the side wall of the second cable tube 8, a gas permeation hole 5 is arranged on the side wall of the second cable tube 8 directly between the filling pipe 4 and the butt joint flange 3, two expansion blocks 9 are respectively arranged in the port of the first cable tube 1 close to one end of the butt joint flange 3 and in the second cable tube 8, and the gas permeation hole 5 and the filling pipe 4 are located between the two expansion blocks 9.

[0017] A branch pipe 7 is arranged on the side wall of the first cable tube 1, a blind flange 6 is arranged on the free end of the branch pipe 7, and the branch pipe 7 is located on the side of the A-class separation away from the butt joint flange 3.

[0018] The air vent 5 and the filling pipe 4 are located on the same side of the central axis of the second cable pipe 8, and the axis of the air vent 5 is parallel to the axis of the filling pipe 4, and the air vent 5 is located between the filling pipe 4 and the butt flange 3.

[0019] The single flange of the butt flange 3 is connected with the first cable pipe 1 and the second cable pipe 8 by double full welding, and the blind flange 6 is connected with the branch pipe 7 by double full welding.

[0020] The cable pipe sleeve 2 is a welding point reinforcing and galvanizing protection member for the A-level separation of the cable pipe, and is connected with the first cable pipe 1 by single full welding, the butt flange 3 connects the first cable pipe 1 and the second cable pipe 8 by a screw rod, the single flange in the butt flange 3 is connected with the first cable pipe 1 and the second cable pipe 8 by double full welding, the filling pipe 4 is used for filling blocking material, the air vent 5 is a circular hole opened on the wall of the second cable pipe 8, and the air vent 5 is used for discharging the gas extruded during filling of the blocking material, the blind flange 6 is an auxiliary observation adjusting port, and the blind flange 6 is connected with the branch pipe 7 by double full welding, the branch pipe 7 is a connecting member of the blind flange 6 and the first cable pipe 1, and the branch pipe 7 is connected with the first cable pipe 1 by single full welding.

[0021] The installation method of the plugging structure is as follows:

[0022] First step, filling PD100G expansion block 9: after the cable laying is completed, the butt flange 3 is disassembled, the second cable pipe 8 and the first cable pipe 1 port are filled with PD100G expansion block 9, after filling the PD100G expansion block 9, the butt flange 3 is restored, the blind flange 6 is opened, the PD100G expansion block 9 filled in the first cable pipe 1 port is checked and adjusted, the PD100G expansion block 9 filled in the first cable pipe 1 port is checked and adjusted, the expansion block 9 is fully filled in the gap between the cable pipe and the cable, then the expansion flame retardant accelerator matched with the product is sprayed, after the expansion block 9 is fully expanded, the cable and the cable pipe end face gap are completely blocked to form a sealed "wall", and then the DMT filling material is filled.

[0023] Second step, filling DMT filling material: the AB component DMT filling material is mixed according to the requirements of the blocking material manufacturer, the DMT filling material is filled in the filling hole by using a special pump, the filling is ended when the DMT filling material in the air vent 5 port is discharged, the filling material is basically solidified after 4 hours of filling according to the method, and it takes about 2 to 4 days to completely harden, at this time, 0.25MPa water pressure can be withstood for one hour without leakage.

[0024] Those skilled in the art should understand that the above only describes specific embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plugging structure for a long cable tube A-class division, characterized by, The A-class partition comprises a first cable tube, a second cable tube and two expansion blocks arranged in the first cable tube and the second cable tube, the A-class partition is arranged on one side of the first cable tube close to the second cable tube, the first cable tube and the second cable tube are connected through butt flanges, a plugging pipe is arranged on the side wall of the second cable tube, a gas permeation hole is arranged on the side wall of the second cable tube directly between the plugging pipe and the butt flange, the two expansion blocks are arranged in the port of the first cable tube close to one end of the butt flange and in the second cable tube respectively, and the gas permeation hole and the plugging pipe are located between the two expansion blocks.

2. A plugging structure for a long cable tube A-class division according to claim 1, characterized in that, A branch pipe is arranged on the side wall of the first cable tube, and a blind flange is arranged on the free end of the branch pipe, the branch pipe is located on the side of the A-class partition away from the butt flange.

3. A plugging structure for a long cable tube A-class division according to claim 2, characterized in that, The gas permeation hole and the plugging pipe are located on the same side of the central axis of the second cable tube, and the axis of the gas permeation hole is arranged in parallel with the axis of the plugging pipe.

4. The plugging structure for the long cable tube A-class division according to claim 3, characterized in that, The gas permeation hole is located between the plugging pipe and the butt flange.

5. The plugging structure for the long cable tube A-class division according to claim 4, characterized in that, The single-piece flange in the butt joint is connected with the first cable tube and the second cable tube through double-sided full welding, and the blind flange is connected with the branch pipe through double-sided full welding.

6. The plugging structure for the long cable tube A-class division according to claim 5, wherein, A cable tube sleeve is arranged on the outside of the pipe wall at the A-class partition.

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