CN115303446A - Maintenance system and method for marine natural gas ventilation device - Google Patents
Maintenance system and method for marine natural gas ventilation device Download PDFInfo
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- CN115303446A CN115303446A CN202211060373.9A CN202211060373A CN115303446A CN 115303446 A CN115303446 A CN 115303446A CN 202211060373 A CN202211060373 A CN 202211060373A CN 115303446 A CN115303446 A CN 115303446A
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- 238000012423 maintenance Methods 0.000 title claims abstract description 151
- 238000009423 ventilation Methods 0.000 title claims abstract description 151
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003345 natural gas Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000725 suspension Substances 0.000 claims description 32
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 11
- 230000035699 permeability Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B81/00—Repairing or maintaining vessels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/02—Ventilation; Air-conditioning
- B63J2/08—Ventilation; Air-conditioning of holds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/02—Ventilation; Air-conditioning
- B63J2/10—Ventilating-shafts; Air-scoops
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/02—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with non-adjustable and non-inclinable jibs mounted solely for slewing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
- B66C23/163—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements where only part of the column rotates, i.e. at least the bottom part is fixed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a maintenance system for a marine natural gas ventilating device, which comprises a protection module, a fixing module and a maintenance module, wherein the protection module comprises a vertical ladder, an anti-falling device and a maintenance channel, the fixing module comprises a stay cable, and the maintenance module comprises a maintenance platform and a suspender device; the straight ladder is arranged on the side wall of the main ventilation pipe, and the anti-falling device is arranged on the straight ladder; one end of the stay cable is connected with the side surface of the main vent pipe, and the other end of the stay cable is connected with a ship deck; the maintenance platform is arranged at the top of the main ventilation pipe, and the suspender device is arranged on the maintenance platform; the invention also relates to a maintenance method for the marine natural gas ventilating device. According to the invention, the boom device is arranged on the maintenance platform, and the boom rotates around the base, so that the maintenance of all the ventilation caps on the main ventilation pipe and the auxiliary ventilation pipe is realized, and the maintenance efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a maintenance system and a maintenance method for a marine natural gas ventilating device.
Background
In the design and construction process of LNG ships, FSRUs, LNG filling ships, LNG dual-fuel power transport ships and the like, ventilation devices specially serving liquid cargo tanks and liquid cargo tank insulation layers are usually required to be arranged; the ventilation device is mainly used for discharging natural gas or nitrogen discharged from a liquid cargo tank safety valve or an insulating layer safety valve, and dangerous gas in a generator is also discharged through the ventilation device for a ship provided with a dual-fuel generator or an engine.
Generally, the height of the gas permeable device is required to meet the strict requirements of the specification rules of IGC code, IGF code, etc., and the height thereof is generally high. Taking a 17-cubic-thousand-meter LNG ship as an example, the height of the air-permeable device is usually higher than 16 meters; the crane of configuration on the ship can't cover breather's top, and the ventilative cap at breather top is provided with the fire prevention net, need ensure ventilative unblocked at ordinary times, therefore need carry out normal maintenance and maintenance to the ventilative cap at breather top, need rely on the hoisting equipment of pier to overhaul and maintain, cause the maintenance and the maintenance of ventilative cap inconvenient, overhaul and maintenance efficiency hang down.
Disclosure of Invention
The system and the method solve the problem that a crane arranged on a ship cannot hoist a ventilation cap and improve the overhauling and maintaining efficiency of the ventilation cap by installing the maintenance platforms on the upper parts of the main ventilation pipe and the auxiliary ventilation pipe and installing the suspender device on the maintenance platforms; the maintenance period is shortened.
In order to achieve the purpose of the invention, the invention provides the following technical scheme:
a maintenance system for a marine natural gas ventilation device comprises a main ventilation pipe and auxiliary ventilation pipes, wherein ventilation caps are arranged at the upper ends of the main ventilation pipe and the auxiliary ventilation pipes, the main ventilation pipe and the auxiliary ventilation pipes are fixed through a connecting plate, a plurality of auxiliary ventilation pipes are arranged around the main ventilation pipe, the system comprises a protection module, a fixing module and a maintenance module, the protection module comprises a vertical ladder, a drop-proof device and a maintenance channel, the fixing module comprises a guy cable, and the maintenance module comprises a maintenance platform and a suspender device; the straight ladder is arranged on the side wall of the main ventilation pipe and extends from the bottom of the main ventilation pipe to the top of the main ventilation pipe; the straight ladder is provided with the anti-falling device, and a plurality of maintenance channels are arranged above the straight ladder; one end of the stay cable is connected with the side surface of the main vent pipe, and the other end of the stay cable is connected with a ship deck; the maintenance platform is installed on the top of the main vent pipe, the suspender device is installed on the maintenance platform, and the suspender device is used for hoisting and lowering the ventilation cap on the upper portion of the main vent pipe and the ventilation cap on the upper portion of the auxiliary vent pipe onto a ship deck.
The maintenance channel is integrally of a hollow cylindrical frame structure and is arranged above the straight ladder.
The number of the guys is multiple, the included angle between adjacent guys on the main ventilating pipes is not more than 180 degrees, when the height of the main ventilating pipes exceeds ten meters, the guys are respectively arranged at the upper parts and the middle parts of the main ventilating pipes, and when the height of the main ventilating pipes does not exceed ten meters, the guys are arranged at the upper parts of the main ventilating pipes; the position of the upper part of the main vent pipe provided with the stay is 80% -90% of the total length of the main vent pipe, and the position of the middle part of the main vent pipe provided with the stay is 50% -60% of the total length of the main vent pipe.
The maintenance platform is arranged below the main ventilation pipe ventilation cap and comprises a supporting platform and a railing, the supporting platform is connected with the main ventilation pipe through a supporting plate, the supporting platform is arranged on the side surfaces of the main ventilation pipe and the auxiliary ventilation pipe, the main ventilation pipe and the auxiliary ventilation pipe are arranged in the middle of the supporting platform, the railing is arranged on the periphery of the outer side of the supporting platform, and the railing is perpendicular to the supporting platform; the supporting platform is a plurality of annular supporting plates, and the distance between every two adjacent supporting plates is 50-60 mm.
The lifting rod device comprises a lifting arm, a base and lifting rings, wherein the bottom of the lifting arm is connected with the base, the lifting arm rotates around the base, a plurality of lifting rings are arranged at the top of the lifting arm, the lifting rings are connected with a chain block, and the chain block lifts and transports the ventilating caps on the main ventilating pipe or the auxiliary ventilating pipe to a deck.
The whole L shape that is of above-mentioned davit, the davit includes horizontal pole and montant, the horizontal pole and the montant of davit are the arc connection, the setting of davit integrated into one piece, the horizontal pole with the montant junction sets up the fixed plate, fixed plate one end with the horizontal pole is connected fixedly, the fixed plate other end with the montant is connected fixedly.
The two sides of the middle part of the vertical rod are respectively provided with a bracelet, and the bracelet and the side surface of the vertical rod form an annular through hole; the lower part of the vertical rod is provided with a bolt; the lower part of the cross rod is provided with a plurality of hanging rings, and when the suspension arm rotates on the base and the vertical rod reaches the upper part of the auxiliary vent pipe or the main vent pipe, the hanging rings are arranged above the ventilation caps of the auxiliary vent pipe and the main vent pipe.
The base is welded and fixed on the supporting platform, the base is welded on the supporting platform provided with the supporting plate, a plurality of toggle plates are arranged on the side surface of the base, and the toggle plates are uniformly distributed on the side surface of the base; the side surface of the base is provided with a bolt hole, and when a bolt on the vertical rod is inserted into the bolt hole on the side surface of the base, the vertical rod is fixed with the base.
A maintenance method for a natural gas ventilating device for a ship specifically comprises the following steps:
the method comprises the following steps that firstly, a maintenance system for a natural gas ventilating device for a ship is prepared, the maintenance system comprises a protection module, a fixing module and a maintenance module, the protection module comprises a vertical ladder, a falling prevention device and a maintenance channel, the fixing module comprises a stay cable, and the maintenance module comprises a maintenance platform and a suspender device; the straight ladder is arranged on the side wall of the main ventilation pipe and extends from the bottom of the main ventilation pipe to the top of the main ventilation pipe; the straight ladder is provided with the anti-falling device, and a plurality of maintenance channels are arranged above the straight ladder; one end of the stay cable is connected with the side surface of the main vent pipe, and the other end of the stay cable is connected with a ship deck; the maintenance platform is arranged at the top of the main vent pipe, the suspender device is arranged on the maintenance platform, and the suspender device is used for hoisting and lowering the ventilation cap at the upper part of the main vent pipe and the ventilation cap at the upper part of the auxiliary vent pipe onto a ship deck;
secondly, when the ventilating caps of the main ventilating pipes or the auxiliary ventilating pipes are maintained, an operator reaches the maintenance platform through the straight ladder, and when the operator is on the straight ladder, the operator is connected with the anti-falling device on the straight ladder through the binding belt;
thirdly, when an operator reaches the maintenance platform, the suspension arm is rotated through the bracelet, so that the cross rod of the suspension arm rotates to the position above the ventilation cap to be maintained, meanwhile, the chain block is arranged on the hanging ring above the ventilation cap to be maintained, and the ventilation cap is lifted through the chain block for maintenance; after the maintenance of the ventilation cap is finished, the ventilation cap is placed on the corresponding main ventilation pipe or the auxiliary ventilation pipe again through the chain block;
fourthly, when the ventilating cap of the main ventilating pipe or the auxiliary ventilating pipe is hoisted to a ship deck for maintenance or replacement, the hoisting arm is rotated through the hand ring, the cross rod of the hoisting arm is rotated to be above the ventilating cap to be maintained or replaced, meanwhile, the chain block is installed on the hoisting ring above the ventilating cap to be maintained or replaced, the ventilating cap is hoisted through the chain block, the ventilating cap to be maintained or replaced is driven to rotate to the outside of the maintenance platform through the rotating hoisting arm of the hand ring, and the ventilating cap is lowered to the ship deck through the chain block for maintenance or replacement;
fifthly, after the ventilating cap is lowered to a ship deck through the chain block to be repaired or replaced, the ventilating cap is lifted to the maintenance platform through the chain block on the suspension arm, and the ventilating cap after being repaired or replaced is installed on the corresponding main ventilating pipe or auxiliary ventilating pipe through the suspension arm rotated by the hand ring; and finishing the maintenance of the ventilation device.
When the hanger rod device lifts or lowers the ventilating cap, the bolt on the hanger arm is inserted into the bolt hole of the base to fix the hanger arm and the base.
Based on the technical scheme, the maintenance system and the maintenance method for the marine natural gas ventilation device have the following technical advantages through practical application:
1. according to the maintenance system for the marine natural gas ventilating device, the suspension rod device is arranged on the maintenance platform, the suspension arm rotates around the base, and the plurality of hanging rings are arranged below the cross rod of the suspension arm, so that the maintenance of all the ventilating caps on the main ventilating pipe and the auxiliary ventilating pipe is realized, the maintenance efficiency is improved, and the maintenance cost is reduced.
2. According to the maintenance system for the marine natural gas ventilation device, the suspender device is arranged on the maintenance platform above the connecting plate, so that the stability and the safety of the suspender device in the use process are improved.
3. According to the maintenance system for the marine natural gas ventilation device, the maintenance channel and the anti-falling device are arranged on the straight ladder, so that the safety of operators on the vertical ladder is improved.
4. According to the maintenance system for the marine natural gas ventilating device, the bolt is arranged on the suspension arm, the suspension arm and the base are fixed when the suspension arm lifts or lowers the ventilating cap, so that the stability of the ventilating cap during lifting or lowering is improved, meanwhile, the suspension arm and the base are fixed when a ship sails, the safety of ship sailing is improved, and the safety of maintenance of the ventilating cap is improved.
Drawings
Fig. 1 is a front view of a maintenance system arrangement of a natural gas breathing apparatus for a ship for use in a maintenance system of the natural gas breathing apparatus for a ship of the present invention.
Fig. 2 is a side view of a maintenance system arrangement for a marine natural gas breathing device in a maintenance system for a marine natural gas breathing device according to the present invention.
Fig. 3 is a front view of a boom assembly for use in a maintenance system for a marine natural gas breathing apparatus according to the present invention.
Fig. 4 is a side view of a boom assembly for use in a maintenance system for a marine natural gas breathing apparatus of the present invention.
Fig. 5 is a top view of a marine natural gas breathing device maintenance system arrangement for use in a marine natural gas breathing device maintenance system of the present invention.
Detailed Description
In order that the objects, aspects and advantages of the present invention will become more apparent, the invention will be described by way of specific examples shown in the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention belongs to a maintenance system for a marine natural gas ventilation device, the natural gas ventilation device comprises a main ventilation pipe 6 and an auxiliary ventilation pipe 7, the upper ends of the main ventilation pipe 6 and the auxiliary ventilation pipe 7 are provided with ventilation caps 2, the main ventilation pipe 6 and the auxiliary ventilation pipe 7 are fixed through a connecting plate, and a plurality of auxiliary ventilation pipes 7 are arranged around the main ventilation pipe 6.
1-5, a maintenance system for a marine natural gas breathing apparatus, the system comprising a shelter module, a fixing module and a maintenance module, the shelter module comprising a vertical ladder, a fall arrest device 5 and a maintenance channel 4, the fixing module comprising a guy cable 8, the maintenance module comprising a maintenance platform 3 and a boom device 1; the straight ladder is arranged on the side wall of the main ventilation pipe 6 and extends from the bottom of the main ventilation pipe 6 to the top of the main ventilation pipe 6; the straight ladder is provided with the anti-falling device 5, and a plurality of maintenance channels 4 are arranged above the straight ladder; one end of the inhaul cable 8 is connected with the side face of the main ventilation pipe 6, and the other end of the inhaul cable 8 is connected with a ship deck; the maintenance platform 3 is arranged at the top of the main permeability cell 6, the suspender device 1 is arranged on the maintenance platform 3, and the suspender device 1 lifts the ventilation cap 2 at the upper part of the main permeability cell 6 and the ventilation cap 2 at the upper part of the auxiliary permeability cell 7 and lowers the ventilation caps onto a ship deck; through installing jib device 1 on maintenance platform 3, davit 14 is rotatory around base 12 simultaneously to set up a plurality of rings 17 in the horizontal pole 141 below of davit 14, realized the maintenance of main permeability cell 6 and all ventilative caps 2 on assisting permeability cell 7 and maintained, improved the efficiency of overhauing, reduced the cost of overhauing.
The maintenance channel 4 is integrally of a hollow cylindrical frame structure, and the maintenance channel 4 is arranged above the straight ladder; the vertical ladder is provided with the maintenance channel 4 and the anti-falling device 5, so that the safety of operators on the vertical ladder is improved.
The number of the guy cables 8 is multiple, the included angle between the adjacent guy cables 8 on the main ventilation pipe 6 is not more than 180 degrees, when the height of the main ventilation pipe 6 is more than ten meters, the guy cables 8 are respectively arranged on the upper part and the middle part of the main ventilation pipe 6, and when the height of the main ventilation pipe 6 is not more than ten meters, the guy cables 8 are arranged on the upper part of the main ventilation pipe 6; the position of the upper part of the main vent pipe 6, which is provided with the inhaul cable 8, is 80-90% of the total length of the main vent pipe 6, and the position of the middle part of the main vent pipe 6, which is provided with the inhaul cable 8, is 50-60% of the total length of the main vent pipe 6; the stability of the installation of the main ventilation pipe 6 is improved by arranging the inhaul cable 8 on the side surface of the main ventilation pipe 6.
The maintenance platform 3 is arranged below the ventilation cap 2 of the main ventilation pipe 6, the maintenance platform 3 comprises a support platform 32 and a railing 31, the support platform 32 is connected with the main ventilation pipe 6 through a support plate 33, the support platform 32 is arranged on the side surfaces of the main ventilation pipe 6 and the auxiliary ventilation pipe 7, the main ventilation pipe 6 and the auxiliary ventilation pipe 7 are arranged in the middle of the support platform 32, the railing 31 is arranged on the periphery of the outer side of the support platform 32, and the railing 31 is perpendicular to the support platform 32; the supporting platform 32 is a plurality of annular supporting plates, and the distance between every two adjacent supporting plates is 50-60 mm.
The boom device 1 comprises a boom 14, a base 12 and a hanging ring 17, wherein the bottom of the boom 14 is connected with the base 12, the boom 14 rotates around the base 12, the top of the boom 14 is provided with a plurality of hanging rings 17, the hanging rings 17 are connected with a chain block 16, and the chain block 16 lifts the ventilating cap 2 on the main ventilating pipe 6 or the ventilating cap 2 on the auxiliary ventilating pipe 7 to a deck; when a plurality of auxiliary vent pipes 7 are arranged around the main vent pipe 6, the maintenance of the vent caps 2 on all vent pipes is realized through one suspender device 1, and the convenience of the maintenance of the vent caps 2 is improved.
The whole suspension arm 14 is in an L shape, the suspension arm 14 comprises a cross rod 141 and a vertical rod 142, the cross rod 141 and the vertical rod 142 of the suspension arm 14 are connected in an arc shape, the suspension arm 14 is integrally formed, a fixing plate 11 is arranged at the joint of the cross rod 141 and the vertical rod 142, one end of the fixing plate 11 is fixedly connected with the cross rod 141, and the other end of the fixing plate 11 is fixedly connected with the vertical rod 142; the arrangement of the fixing plate 11 improves the stability of the suspension arm 14 and prolongs the service life of the suspension arm 14.
Two sides of the middle part of the vertical rod 142 are respectively provided with a bracelet 15, and the bracelet 15 and the side surface of the vertical rod 142 form an annular through hole; the lower part of the vertical rod 142 is provided with a bolt 13; a plurality of hanging rings 17 are arranged at the lower part of the cross rod 141, and when the suspension arm 14 rotates on the base and the vertical rod 142 reaches the upper part of the auxiliary vent pipe 7 or the main vent pipe 6, the hanging rings 17 are arranged above the vent caps 2 of the auxiliary vent pipe 7 and the vent caps 2 of the main vent pipe 6.
The base 12 is welded and fixed on the supporting platform 32, the base 12 is welded on the supporting platform 32 provided with a supporting plate 33, a plurality of toggle plates are arranged on the side surface of the base 12, and the toggle plates are uniformly distributed on the side surface of the base 12; a bolt hole is formed in the side surface of the base 12, and when the bolt 13 on the vertical rod 142 is inserted into the bolt hole in the side surface of the base 12, the vertical rod 142 is fixed with the base 12; the suspender device 1 is arranged on the maintenance platform 3 above the connecting plate, so that the stability and the safety of the suspender device 1 in the use process are improved; the bolt 13 is arranged on the suspension arm 14, and when the suspension arm 14 lifts or lowers the ventilating cap 2, the suspension arm 14 is fixed with the base 12, so that the stability of the ventilating cap 2 during lifting or lowering is improved, and the overhauling safety of the ventilating cap 2 is improved.
A maintenance method for a natural gas ventilating device for a ship specifically comprises the following steps:
the first step, preparing a maintenance system for a marine natural gas ventilation device, which comprises a protection module, a fixing module and a maintenance module, wherein the protection module comprises a vertical ladder, a falling prevention device 5 and a maintenance channel 4, the fixing module comprises a guy cable 8, and the maintenance module comprises a maintenance platform 3 and a suspender device 1; the straight ladder is arranged on the side wall of the main ventilation pipe 6 and extends from the bottom of the main ventilation pipe 6 to the top of the main ventilation pipe 6; the anti-falling device 5 is arranged on the straight ladder, and the maintenance channels 4 are arranged above the straight ladder; one end of the stay cable 8 is connected with the side surface of the main vent pipe 6, and the other end of the stay cable 8 is connected with a ship deck; the maintenance platform 3 is arranged at the top of the main vent pipe 6, the suspender device 1 is arranged on the maintenance platform 3, and the suspender device 1 lifts the ventilation cap 2 at the upper part of the main vent pipe 6 and the ventilation cap 2 at the upper part of the auxiliary vent pipe 7 and lowers the ventilation caps onto a ship deck;
secondly, when the ventilating caps 2 of the main ventilating pipes 6 or the auxiliary ventilating pipes 7 are maintained, an operator reaches the maintenance platform 3 through the straight ladder, and when the operator is on the straight ladder, the operator is connected with the anti-falling device 5 on the straight ladder through the binding belt;
thirdly, when the operator reaches the maintenance platform 3, the boom 14 is rotated through the bracelet 15, so that the cross rod 141 of the boom 14 is rotated to the position above the ventilation cap 2 to be maintained, meanwhile, the chain block 16 is arranged on the hanging ring 17 above the ventilation cap 2 to be maintained, and the ventilation cap 2 is lifted through the chain block 16 for maintenance; after the maintenance of the ventilation cap 2 is finished, the ventilation cap 2 is placed on the corresponding main ventilation pipe 6 or the auxiliary ventilation pipe 7 again through the chain block 16;
fourthly, when the ventilating cap 2 of the main ventilating pipe 6 or the auxiliary ventilating pipe 7 is lifted to a ship deck for maintenance or replacement, the lifting arm 14 is rotated through the hand ring 15, the cross rod 141 of the lifting arm 14 is rotated to be above the ventilating cap 2 to be maintained or replaced, meanwhile, the chain block 16 is installed on the lifting ring 17 above the ventilating cap 2 to be maintained or replaced, the ventilating cap 2 is lifted through the chain block 16, the lifting arm 14 is rotated through the hand ring 15 to drive the ventilating cap 2 to be maintained or replaced to rotate to the outside of the maintenance platform 3, and the ventilating cap 2 is lowered to the ship deck through the chain block 16 for maintenance or replacement;
fifthly, after the ventilating cap 2 is lowered to a ship deck for maintenance or replacement through the chain block 16, the ventilating cap is lifted to the maintenance platform 3 through the chain block 16 on the suspension arm 14, and the suspension arm 14 is rotated through the hand ring 15 to install the ventilating cap 2 after maintenance or replacement on the corresponding main ventilating pipe 6 or auxiliary ventilating pipe 7; and finishing the maintenance of the ventilation device.
When the air cap 2 is lifted or lowered, the bolt 13 on the suspension arm 14 is inserted into the bolt hole of the base 12 to fix the suspension arm 14 and the base 12.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that; modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A maintenance system for a marine natural gas ventilation device, the natural gas ventilation device comprises a main ventilation pipe (6) and an auxiliary ventilation pipe (7), the upper ends of the main ventilation pipe (6) and the auxiliary ventilation pipe (7) are provided with ventilation caps (2), the main ventilation pipe (6) and the auxiliary ventilation pipe (7) are fixed through connecting plates, and a plurality of auxiliary ventilation pipes (7) are arranged around the main ventilation pipe (6), the maintenance system is characterized by comprising a protection module, a fixing module and a maintenance module, wherein the protection module comprises a vertical ladder, an anti-falling device (5) and a maintenance channel (4), the fixing module comprises a stay cable (8), and the maintenance module comprises a maintenance platform (3) and a suspender device (1); the straight ladder is arranged on the side wall of the main ventilation pipe (6) and extends from the bottom of the main ventilation pipe (6) to the top of the main ventilation pipe (6); the anti-falling device (5) is arranged on the straight ladder, and a plurality of maintenance channels (4) are arranged above the straight ladder; one end of the stay cable (8) is connected with the side surface of the main vent pipe (6), and the other end of the stay cable (8) is connected with a ship deck; the maintenance platform (3) is installed at the top of the main vent pipe (6), the suspender device (1) is installed on the maintenance platform (3), and the suspender device (1) lifts up and places the ventilation cap (2) on the upper portion of the main vent pipe (6) and the ventilation cap (2) on the upper portion of the auxiliary vent pipe (7) on a ship deck.
2. The maintenance system for natural gas breathing apparatus for ships according to claim 1, characterized in that the maintenance passage (4) is a hollow cylindrical frame structure as a whole, and the maintenance passage (4) is installed above the vertical ladder.
3. The maintenance system for the natural gas ventilating device for the ship according to claim 1, characterized in that, the stay cables (8) are in total multiple, the included angle of the adjacent stay cables (8) on the main ventilating pipe (6) is not more than 180 degrees, when the height of the main ventilating pipe (6) is more than ten meters, the stay cables (8) are respectively arranged at the upper part and the middle part of the main ventilating pipe (6), when the height of the main ventilating pipe (6) is not more than ten meters, the stay cables (8) are arranged at the upper part of the main ventilating pipe (6); the position of the upper part of the main vent pipe (6) provided with the stay (8) is 80% -90% of the total length of the main vent pipe (6), and the position of the middle part of the main vent pipe (6) provided with the stay (8) is 50% -60% of the total length of the main vent pipe (6).
4. The maintenance system for the natural gas ventilation device for the ship according to claim 1, characterized in that the maintenance platform (3) is arranged below the ventilation cap (2) of the main ventilation pipe (6), the maintenance platform (3) comprises a support platform (32) and a railing (31), the support platform (32) is connected with the main ventilation pipe (6) through a support plate (33), the support platform (32) is arranged at the side of the main ventilation pipe (6) and the auxiliary ventilation pipe (7), the main ventilation pipe (6) and the auxiliary ventilation pipe (7) are arranged at the middle of the support platform (32), the railing (31) is arranged at the outer periphery of the support platform (32), and the railing (31) is perpendicular to the support platform (32); the supporting platform (32) is a plurality of annular supporting rods, and the distance between every two adjacent supporting rods is 50-60 mm.
5. The maintenance system for the marine natural gas ventilation device according to claim 1, wherein the boom device (1) comprises a boom (14), a base (12) and a lifting ring (17), wherein the bottom of the boom (14) is connected with the base (12), the boom (14) rotates around the base (12), the top of the boom (14) is provided with a plurality of lifting rings (17), the lifting rings (17) are connected with a chain block (16), and the chain block (16) lifts the ventilation cap (2) on the main ventilation pipe (6) or the ventilation cap (2) on the auxiliary ventilation pipe (7) to a deck.
6. The maintenance system for the marine natural gas ventilating device, as set forth in claim 1, is characterized in that the suspension arm (14) is L-shaped as a whole, the suspension arm (14) comprises a cross rod (141) and a vertical rod (142), the cross rod (141) and the vertical rod (142) of the suspension arm (14) are connected in an arc shape, the suspension arm (14) is integrally formed and arranged, a fixing plate (11) is arranged at the joint of the cross rod (141) and the vertical rod (142), one end of the fixing plate (11) is fixedly connected with the cross rod (141), and the other end of the fixing plate (11) is fixedly connected with the vertical rod (142).
7. The maintenance system for the natural gas ventilation device for the ship as claimed in claim 6, wherein two sides of the middle part of the vertical rod (142) are respectively provided with a bracelet (15), and the bracelet (15) and the side surface of the vertical rod (142) form an annular through hole; the lower part of the vertical rod (142) is provided with a bolt (13); the lower portion of the cross rod (141) is provided with a plurality of hanging rings (17), when the suspension arm (14) rotates on the base, and when the vertical rod (142) reaches the position above the auxiliary vent pipe (7) or the main vent pipe (6), the hanging rings (17) are arranged above the vent caps (2) of the auxiliary vent pipe (7) and the main vent pipe (6).
8. The maintenance system for the natural gas breathing device for the ship according to claim 5, characterized in that the base (12) is welded and fixed on the supporting platform (32), the base (12) is welded on the supporting platform (32) provided with a supporting plate (33), a plurality of brackets are arranged on the side surface of the base (12), and the brackets are evenly distributed on the side surface of the base (12); the side surface of the base (12) is provided with bolt holes, and when the bolts (13) on the vertical rods (142) are inserted into the bolt holes in the side surface of the base (12), the vertical rods (142) are fixed with the base (12).
9. A maintenance method for a natural gas ventilating device for a ship is characterized by comprising the following steps:
the first step, preparing a maintenance system for a natural gas ventilating device for a ship, which comprises a protection module, a fixing module and a maintenance module, wherein the protection module comprises a vertical ladder, a falling prevention device (5) and a maintenance channel (4), the fixing module comprises a guy cable (8), and the maintenance module comprises a maintenance platform (3) and a suspender device (1); the straight ladder is arranged on the side wall of the main permeability pipe (6), and the straight ladder extends from the bottom of the main permeability pipe (6) to the top of the main permeability pipe (6); the anti-falling device (5) is arranged on the straight ladder, and a plurality of maintenance channels (4) are arranged above the straight ladder; one end of the inhaul cable (8) is connected with the side face of the main vent pipe (6), and the other end of the inhaul cable (8) is connected with a ship deck; the maintenance platform (3) is arranged at the top of the main vent pipe (6), the suspender device (1) is arranged on the maintenance platform (3), and the suspender device (1) lifts the ventilation cap (2) at the upper part of the main vent pipe (6) and the ventilation cap (2) at the upper part of the auxiliary vent pipe (7) and lowers the ventilation caps onto a ship deck;
secondly, when the ventilating cap (2) of the main ventilating pipe (6) or the auxiliary ventilating pipe (7) is maintained, an operator reaches the maintenance platform (3) through the straight ladder, and when the operator is on the straight ladder, the operator is connected with the anti-falling device (5) on the straight ladder through the binding band;
thirdly, when an operator reaches the maintenance platform (3), the lifting arm (14) is rotated through the hand ring (15), the cross rod (141) of the lifting arm (14) is rotated to be above the ventilation cap (2) to be maintained, meanwhile, the chain block (16) is installed on the lifting ring (17) above the ventilation cap (2) to be maintained, the bolt (13) on the lifting arm (14) is inserted into the bolt hole of the base (12) to fix the lifting arm (14) and the base (12), and the ventilation cap (2) is lifted up through the chain block (16) for maintenance; after the maintenance of the ventilation cap (2) is finished, the ventilation cap (2) is placed on the corresponding main ventilation pipe (6) or the auxiliary ventilation pipe (7) again through the chain block (16);
fourthly, when the ventilation cap (2) of the main ventilation pipe (6) or the auxiliary ventilation pipe (7) is lifted to a ship deck for maintenance or replacement, the lifting arm (14) is rotated through the hand ring (15), the cross rod (141) of the lifting arm (14) is rotated to be above the ventilation cap (2) to be maintained or replaced, meanwhile, the chain block (16) is installed on the hanging ring (17) above the ventilation cap (2) to be maintained or replaced, the plug pin (13) on the lifting arm (14) is inserted into the plug pin hole of the base (12) to fix the lifting arm (14) and the base (12), the ventilation cap (2) is lifted through the chain block (16), the plug pin (13) on the lifting arm (14) is pulled out after the ventilation cap (2) is lifted, the ventilation cap (14) is rotated through the hand ring (15) to drive the ventilation cap (2) to be maintained or replaced to rotate to the maintenance platform (3), and then the plug pin (13) on the lifting arm (14) is inserted into the plug pin hole of the base (12) and the hand ring (16) is lowered to replace the ventilation cap (2) of the ship deck for maintenance or replacement;
fifthly, after the ventilating cap (2) is lowered to a ship deck through the chain block (16) to be repaired or replaced, the ventilating cap is lifted to the maintenance platform (3) through the chain block (16) on the suspension arm (14), and the suspended arm (14) is rotated through the hand ring (15) to install the ventilating cap (2) which is repaired or replaced on the corresponding main ventilating pipe (6) or the auxiliary ventilating pipe (7); and finishing the maintenance of the ventilation device.
10. The maintenance method for the natural gas ventilating device for the ship as claimed in claim 9, characterized in that when the boom device (1) is used for lifting or lowering the ventilating cap (2), the bolt (13) on the boom (14) is inserted into the bolt hole of the base (12) to fix the boom (14) and the base (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211060373.9A CN115303446A (en) | 2022-08-31 | 2022-08-31 | Maintenance system and method for marine natural gas ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211060373.9A CN115303446A (en) | 2022-08-31 | 2022-08-31 | Maintenance system and method for marine natural gas ventilation device |
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| Publication Number | Publication Date |
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| CN115303446A true CN115303446A (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211060373.9A Pending CN115303446A (en) | 2022-08-31 | 2022-08-31 | Maintenance system and method for marine natural gas ventilation device |
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| CN (1) | CN115303446A (en) |
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| CN113879458A (en) * | 2021-11-12 | 2022-01-04 | 沪东中华造船(集团)有限公司 | Combined ventilating mast for dual-fuel ultra-large container ship |
| CN216636760U (en) * | 2021-03-23 | 2022-05-31 | 碧航船舶技术(上海)有限公司 | Marine LNG ventilation mast |
| CN217100359U (en) * | 2021-07-01 | 2022-08-02 | 厦门船舶重工股份有限公司 | LNG (liquefied Natural gas) ventilating mast of ro-ro passenger ship |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101584361B1 (en) * | 2015-06-12 | 2016-01-13 | 주식회사 탑이엔씨 | Ventilation facilities for easy maintenance of common duct |
| CN207450161U (en) * | 2017-09-27 | 2018-06-05 | 上海东鼎钢结构有限公司 | A kind of ventilative mast platform |
| CN112158296A (en) * | 2019-01-25 | 2021-01-01 | 太平洋海洋工程（舟山）有限公司 | Breathable mast suitable for FSRU |
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