Ventilation mast of high-low pressure gas supply system of double-island type dual-fuel container ship

Abstract

The utility model discloses a ventilation mast of a high-pressure and low-pressure gas supply system of a double-island type dual-fuel container ship. The ventilation mast comprises a main mast frame, a high-pressure gas supply system ventilation pipe, a low-pressure gas supply system ventilation pipe and a fuel cabin position ventilation pipe, wherein the high-pressure gas supply system ventilation pipe, the low-pressure gas supply system ventilation pipe and the fuel cabin position ventilation pipe are installed in the main mast frame. The high-pressure air supply system vent pipe comprises a high-pressure air supply system silencer located in the middle of the main mast frame and a stainless steel high-pressure vent pipe connected to the top of the high-pressure air supply system silencer. The low-pressure air supply system vent pipe is a stainless steel low-pressure vent pipe located on the left side of the high-pressure air supply system silencer. The ventilation pipe at the fuel cabin comprises a lower straight section fuel cabin ventilation pipe positioned at the right front part of a silencer of the high-pressure air supply system; one end of the horizontal section fuel cabin ventilation pipe is connected to the top of the lower straight section fuel cabin ventilation pipe, and the horizontal section fuel cabin ventilation pipe firstly extends forwards and then extends leftwards to the left front part of the low-pressure gas supply system ventilation pipe; and the upper straight section fuel cabin ventilation pipe is vertically connected to the other end of the horizontal section fuel cabin ventilation pipe. The integration level and the strength are both high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of venting masts of double-island dual-fuel container ship high-low pressure gas supply system. BACKGROUND

[0002] Large double-island container adopts LNG fuel gas supply system, container ship is provided with front island and rear island. The rear island is tail cabin chimney place, and the front island is upper built residence working place;Fuel tank is located at the lower position of front island, fuel tank connecting place and gas preparation room are located below the upper building of front island, and fuel tank adopts B type independent tank;Gas supply system adopts high and low pressure combination mode, whereby a venting mast suitable for high and low pressure gas supply system needs to be developed. Venting mast is an important safety device of ship, which can effectively solve the problem of flammable gas safe discharge. SUMMARY

[0003] The utility model discloses a kind of venting masts of double-island dual-fuel container ship, it high pressure gas supply system venting pipe, low pressure gas supply system venting pipe and fuel tank place ventilation pipe are integrated in main mast frame, and high in structure strength, reduce the vibration risk of venting mast.

[0004] The utility model discloses a kind of venting masts of double-island dual-fuel container ship high-low pressure gas supply system, including the main mast frame of four prism space structure, the maintenance platform of being positioned at the top of main mast frame and the high pressure gas supply system venting pipe, low pressure gas supply system venting pipe and fuel tank place ventilation pipe installed in main mast frame;Wherein,

[0005] The maintenance platform is provided with three with high pressure gas supply system venting pipe, low pressure gas supply system venting pipe and fuel tank ventilation pipe one-to-one corresponding platform perforation;

[0006] The high pressure gas supply system venting pipe includes high pressure gas supply system muffler vertically installed in the middle of main mast frame and stainless steel high pressure venting pipe connected in the top of high pressure gas supply system muffler, the stainless steel high pressure venting pipe includes lower inclined pipe connected with the top of high pressure gas supply system muffler and inclined to front and upper straight section stainless steel high pressure venting pipe connected in the top of lower inclined section stainless steel high pressure venting pipe;

[0007] The low pressure gas supply system venting pipe is stainless steel low pressure venting pipe vertically installed in the left side of high pressure gas supply system muffler;

[0008] The fuel cabin place ventilation pipe comprises a lower straight section fuel cabin ventilation pipe installed in front of the high-pressure gas supply system muffler, a horizontal section fuel cabin ventilation pipe connected to the top of the lower straight section fuel cabin ventilation pipe and extending forward first and then left to the front of the low-pressure gas supply system ventilation pipe, and an upper straight section fuel cabin ventilation pipe connected to the other end of the horizontal section fuel cabin ventilation pipe.

[0009] The top of the upper straight section stainless steel high-pressure ventilation pipe, the top of the low-pressure gas supply system ventilation pipe and the top of the upper straight section fuel cabin ventilation pipe are all higher than the maintenance platform, and the upper straight section stainless steel high-pressure ventilation pipe, the low-pressure gas supply system ventilation pipe and the upper straight section fuel cabin ventilation pipe are all connected to the maintenance platform through buckles.

[0010] The ventilation mast of the high-low pressure gas supply system of the double-island dual-fuel container ship, wherein the maintenance platform is a steel grating, and a safety fence is arranged around the maintenance platform; the safety fence is made of round steel and flat iron bars.

[0011] The ventilation mast of the high-low pressure gas supply system of the double-island dual-fuel container ship, wherein a straight ladder is arranged at the rear of the main mast frame, and a safety fence is also arranged at the upper part of the straight ladder.

[0012] The ventilation mast of the high-low pressure gas supply system of the double-island dual-fuel container ship, wherein a ventilation cap is arranged at the top of the upper straight section stainless steel high-pressure ventilation pipe and the top of the stainless steel low-pressure ventilation pipe; a combustible gas probe is arranged at the upper part of the upper straight section stainless steel high-pressure ventilation pipe and the upper part of the low-pressure gas supply system ventilation pipe; and a vacuum pressure release valve is arranged at the top of the upper straight section fuel cabin ventilation pipe.

[0013] The ventilation mast of the high-low pressure gas supply system of the double-island dual-fuel container ship, wherein the lower part of the low-pressure gas supply system ventilation pipe is connected to a discharge pipe and a liquid level switch.

[0014] The ventilation mast of the high-low pressure gas supply system of the double-island dual-fuel container ship, wherein the bottom of the high-pressure gas supply system muffler and the bottom of the low-pressure gas supply system ventilation pipe are both connected to a nitrogen purge pipe, and a nitrogen purge control valve and a check valve are arranged on the nitrogen purge pipe.

[0015] The ventilation mast of the high-low pressure gas supply system of the double-island dual-fuel container ship, wherein the high-pressure gas supply system muffler is supported on the main mast frame through a support; and the fuel cabin place ventilation pipe is supported on the main mast frame through a buckle.

[0016] The air venting mast of the large double-island dual-fuel container ship has the following characteristics: the high-pressure gas supply system air venting pipe, the low-pressure gas supply system air venting pipe and the fuel tank place ventilation pipe are integrated in the main mast frame, and are supported by the main mast frame to a height facilitating gas discharge and operation, and the high-pressure gas supply system air venting pipe, the low-pressure gas supply system air venting pipe and the fuel tank place ventilation pipe are supported on the main mast frame by pipe clamps, buckles and supports, so that the air venting pipes can slide up and down to release vibration and thermal expansion and contraction displacement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front perspective view of the air venting mast of the large double-island dual-fuel container ship of the utility model;

[0018] Figure 2 is a rear perspective view of the air venting mast of the large double-island dual-fuel container ship of the utility model;

[0019] Figure 3 is a front perspective view of the main mast frame in the air venting mast of the utility model;

[0020] Figure 4 is a front perspective view of the air venting mast of the utility model after removing the main mast frame;

[0021] Figure 5 is a rear perspective view of the air venting mast of the utility model after removing the main mast frame. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings.

[0023] Please refer to Figures 1 to 5 The air venting mast of the high-low pressure gas supply system of the double-island dual-fuel container ship of the utility model is installed beside the driving platform of the front island and comprises a main mast frame 1 of four-prism space structure, a maintenance platform 2 arranged at the top of the main mast frame 1 and a high-pressure gas supply system air venting pipe 5, a low-pressure gas supply system air venting pipe 6 and a fuel tank place ventilation pipe 7 arranged in the main mast frame 1.

[0024] The main mast frame 1 comprises four support columns and a top layer horizontal frame 11, a second layer horizontal frame 12, a first layer horizontal frame 13 and a bottom layer horizontal frame 14 connected in sequence from top to bottom on the four support columns; the top layer horizontal frame 11 constitutes the frame of the maintenance platform 2; a straight ladder 15 is arranged at the middle of the rear end of the main mast frame 1, and a cage fence 4 is arranged at the upper portion of the straight ladder 15.

[0025] The maintenance platform 2 is a steel grating laid on the top layer horizontal frame 11, and is provided with three platform perforations corresponding to the high-pressure gas supply system air pipe 5, the low-pressure gas supply system air pipe 6 and the fuel tank ventilation pipe 7 respectively. The periphery of the maintenance platform 2 is provided with a safety fence 3. The cage fence 4 and the safety fence 3 are both made of round steel and flat iron strips.

[0026] The high-pressure gas supply system air pipe 5 comprises a high-pressure gas supply system muffler 50 vertically installed in the middle of the main mast frame 1 and a stainless steel high-pressure air pipe connected to the top of the high-pressure gas supply system muffler 50. The high-pressure gas supply system muffler 50 is supported on the first layer horizontal frame 13 of the main mast frame 1 through four supports 2A, and is used to reduce the noise emitted by the high-pressure gas supply system. The stainless steel high-pressure air pipe comprises a lower inclined section stainless steel high-pressure air pipe 51 connected to the top of the high-pressure gas supply system muffler 50 and inclined forward, and an upper straight section stainless steel high-pressure air pipe 52 connected to the top of the lower inclined section stainless steel high-pressure air pipe 51. The top of the upper straight section stainless steel high-pressure air pipe 52 is higher than the maintenance platform 2, and a high-pressure air cap 53 is installed on the top of the upper straight section stainless steel high-pressure air pipe 52, and a combustible gas detection probe 8 is arranged at the bottom of the high-pressure air cap 53. The upper straight section stainless steel high-pressure air pipe 52 is connected to the top layer horizontal frame 11 of the main mast frame 1 through a pipe clamp 2B at a position with the same height as the maintenance platform 2.

[0027] The low-pressure gas supply system air pipe 6 is a stainless steel low-pressure air pipe vertically installed on the left side of the high-pressure gas supply system muffler 50. The top of the low-pressure gas supply system air pipe 6 is higher than the maintenance platform 2, and a low-pressure air cap 60 is installed on the top of the low-pressure gas supply system air pipe 6. The low-pressure air cap 60 is provided with a fireproof net and electric heat tracing, and a combustible gas detection probe 8 is arranged at the bottom of the low-pressure air cap 60. The upper and lower parts of the low-pressure gas supply system air pipe 6 are respectively supported on the top layer horizontal frame 11 and the first layer horizontal frame 13 of the main mast frame 1 through the pipe clamp 2B one by one. The lower part of the low-pressure gas supply system air pipe 6 is connected to a backward-bent bend pipe 6A which penetrates out of the main mast frame 1, and a discharge pipe 61 and a liquid level switch 62 are installed on the lower part of the low-pressure gas supply system air pipe 6. The discharge pipe 61 can discharge condensation in the low-pressure gas supply system air pipe 6 at any time.

[0028] The bottom of the high-pressure gas supply system muffler 50 and the bottom of the low-pressure gas supply system air pipe 6 are both connected to a nitrogen purge pipe 9, and a nitrogen purge control valve 9A is installed on the nitrogen purge pipe 9. A check valve 9B is installed on the nitrogen purge pipe 9 on the side of the high-pressure gas supply system muffler. The check valve 9B can prevent high-pressure gas from being backflushed into the nitrogen purge pipe 9. The nitrogen purge pipe 9 is supported on the ship structure through a support leg 2D. The bottom of the high-pressure gas supply system muffler 50 is provided with a discharge pipe 5A.

[0029] The fuel tank place ventilation pipe 7 comprises a lower straight section fuel tank ventilation pipe 71 installed in front of the right of the high pressure gas supply system muffler 50 and with a height adapted to the height of the high pressure gas supply system muffler 50, a horizontal section fuel tank ventilation pipe 72 connected at one end to the top of the lower straight section fuel tank ventilation pipe 71 and first extending forward and then extending left to the front of the left of the low pressure gas supply system ventilation pipe 6, and an upper straight section fuel tank ventilation pipe 73 connected at the other end of the horizontal section fuel tank ventilation pipe 72 in a vertical manner; the top of the upper straight section fuel tank ventilation pipe 73 is higher than the maintenance platform 2, and the vacuum pressure release valve 74 is installed at the top of the upper straight section fuel tank ventilation pipe 73; the upper straight section fuel tank ventilation pipe 73 is supported on the maintenance platform 2 by the buckle 2C at a position with the same height as the maintenance platform 2; the horizontal section fuel tank ventilation pipe 72 is fixed on the second layer horizontal frame 12 of the main mast frame 1 by the buckle 2C; and the lower straight section fuel tank ventilation pipe 71 is supported on the first layer horizontal frame 13 of the main mast frame 1 by the buckle 2C.

[0030] The ventilation mast of the high and low pressure gas supply system of the double-island type dual-fuel container ship of the utility model integrates the high pressure gas supply system ventilation pipe 5, the low pressure gas supply system ventilation pipe 6 and the fuel tank place ventilation pipe 7 in the main mast frame 1 and supports the same to a height convenient for gas discharge and operation by the main mast frame 1.

[0031] The above embodiments are only used for illustrating the utility model and are not limited to the utility model. Those skilled in the art can make various transformations or modifications without departing from the spirit and scope of the utility model, therefore all equivalent technical solutions should belong to the scope of the utility model and should be limited by the claims.

Claims

1.A vent mast of a high-low pressure gas supply system of a dual-island dual-fuel container ship, comprising a quadrangular prism space structure main mast frame, a maintenance platform arranged at the top of the main mast frame, and a high pressure gas supply system vent pipe, a low pressure gas supply system vent pipe and a fuel tank place ventilation pipe arranged in the main mast frame; characterized in that, the maintenance platform is provided with three platform perforations corresponding to the high pressure gas supply system vent pipe, the low pressure gas supply system vent pipe and the fuel tank ventilation pipe respectively; the high pressure gas supply system vent pipe comprises a high pressure gas supply system silencer vertically arranged at the middle of the main mast frame and a stainless steel high pressure vent pipe connected to the top of the high pressure gas supply system silencer, the stainless steel high pressure vent pipe comprises a lower inclined pipe connected to the top of the high pressure gas supply system silencer and inclined forward, and an upper straight section stainless steel high pressure vent pipe connected to the top of the lower inclined section stainless steel high pressure vent pipe; the low pressure gas supply system vent pipe is a stainless steel low pressure vent pipe vertically arranged at the left side of the high pressure gas supply system silencer; the fuel tank place ventilation pipe comprises a lower straight section fuel tank ventilation pipe arranged at the front right of the high pressure gas supply system silencer and having a height matching the height of the high pressure gas supply system silencer, a horizontal section fuel tank ventilation pipe connected to the top of the lower straight section fuel tank ventilation pipe and extending forward first and then leftward to the front left of the low pressure gas supply system vent pipe, and an upper straight section fuel tank ventilation pipe vertically connected to the other end of the horizontal section fuel tank ventilation pipe; the top of the upper straight section stainless steel high pressure vent pipe, the top of the low pressure gas supply system vent pipe and the top of the upper straight section fuel tank place ventilation pipe are all higher than the maintenance platform, and the upper straight section stainless steel high pressure vent pipe, the low pressure gas supply system vent pipe and the upper straight section fuel tank place ventilation pipe are all connected to the maintenance platform at the same height by buckles; the maintenance platform is a steel grating, and a safety fence is arranged around the maintenance platform; the safety fence is made of round steel and flat iron bars; a straight ladder is arranged at the back of the main mast frame, and a safety fence is also arranged at the upper part of the straight ladder; a vent cap is arranged at the top of the upper straight section stainless steel high pressure vent pipe and the top of the stainless steel low pressure vent pipe; a combustible gas probe is arranged at the upper part of the upper straight section stainless steel high pressure vent pipe and the upper part of the low pressure gas supply system vent pipe respectively; and a vacuum pressure relief valve is arranged at the top of the upper straight section fuel tank ventilation pipe; the lower part of the low pressure gas supply system vent pipe is connected to a relief pipe and a liquid level switch; the bottom of the high pressure gas supply system silencer and the bottom of the low pressure gas supply system vent pipe are both connected to a nitrogen purge pipe, and a nitrogen purge control valve and a check valve are arranged on the nitrogen purge pipe; the high pressure gas supply system silencer is supported on the main mast frame by a support; and the fuel tank place ventilation pipe is supported on the main mast frame by a buckle. ​ ​ ​ ​ ​ 2. The vent stack of a high and low pressure gas supply system of a dual island dual fuel container ship according to claim 1, characterized in that, ​ 3. The vent stack of a high and low pressure gas supply system of a dual island dual fuel container ship according to claim 1, characterized in that, ​ 4. The vent stack of a high and low pressure gas supply system of a dual island dual fuel container ship according to claim 1, characterized in that, ​ 5. The vent stack of a high and low pressure gas supply system of a dual island dual fuel container ship according to claim 1, characterized in that, ​ 6. The vent stack of a high and low pressure gas supply system of a dual island dual fuel container ship according to claim 1, characterized in that ​ 7. The air vent mast of a high and low pressure gas supply system of a dual island dual fuel container ship according to claim 1, characterized in that, ​

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