CN206176036U - Marine double -barrelled loading and unloading arm of low temperature - Google Patents
Marine double -barrelled loading and unloading arm of low temperature Download PDFInfo
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- CN206176036U CN206176036U CN201620681879.5U CN201620681879U CN206176036U CN 206176036 U CN206176036 U CN 206176036U CN 201620681879 U CN201620681879 U CN 201620681879U CN 206176036 U CN206176036 U CN 206176036U
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Abstract
The utility model relates to a marine double -barrelled loading and unloading arm of low temperature, double -barrelled loading and unloading arm include bearing structure, pipe -line system, hydraulic drive system, maintenance platform, nitrogen purging system, promptly break away from system, hydraulic pressure substation, go up rope sheave, wire rope and rope sheave down, wire rope sets up at last rope sheave under and between the rope sheave, maintenance platform setting is on the upper portion of loading and unloading arm, and nitrogen purging system configuration is in the side lower part of stand, the hydraulic pressure substation sets up the stand side at the loading and unloading arm. This scheme can make bearing structure, liquid phase pipe -line system including ambient temperature and low temperature working condition's deformation mutual independence under any operating mode, gaseous phase pipe -line system and the liquid phase pipe -line system also mutual independence of deformation that includes ambient temperature and low temperature working condition under any operating mode simultaneously, and especially under low temperature working condition, liquid phase pipe -line system and gaseous phase pipe -line system's the arbitrary freedom of pipe -line system 3 has been eliminated intraductal stress like this and has been guaranteed the marine double -barrelled loading and unloading arm of low temperature safe handling.
Description
Technical field
The present invention relates to a kind of loading arm, and in particular to a kind of low temperature two-tube loading arm peculiar to vessel, belong to LNG ship and set with handling
Standby technical field.
Background technology
The super-low liquid that generally LNG of structure, low temperature ethylene loading arm peculiar to vessel are used in delivery chute ship on harbour, institute
The temperature of liquid of conveying is extremely low, causes the gas phase pipeline of conveying liquid, liquid pipe amount of contraction in loading arm peculiar to vessel very big, and props up
Temperature residing for the structure in stay tube road is ambient temperature, causes supporting construction with gas phase tubing, liquid pipe system because of temperature
The larger temperature deformation of the larger generation of degree difference is poor, and supporting construction is much smaller than gas phase tubing and liquid because of the deformation that temperature is produced
The deformation that phase tubing is produced because of temperature, at the same gas phase tubing with liquid pipe system also because temperature is different（Liquid-phase tube
Channel temp is lower）Different temperature shrinkages, i.e. supporting construction are generated with gas phase tubing and liquid pipe system peculiar to vessel
When loading arm works（During handling cryogenic liquid）Deflection is inconsistent, and it is huge that this will cause supporting construction and tubing inside to produce
Big internal stress, gas phase tubing and liquid pipe system cause gas phase tubing, liquid pipe because deflection is uncoordinated
There is very big internal stress in system, huge internal stress affects very big to the security performance and unfailing performance of loading arm peculiar to vessel, especially
It is the position more concentrated in channel bend weld seam, swivel joint iso-stress, and residing temperature is very low plus huge in pipeline
The safe handling of stress loading arm cannot ensure that the two-tube loading arm of low temperature peculiar to vessel used is all because adopting on domestic many harbours
More or less all there is leakage problem in the structure design of room temperature medium loading arm（As shown in Figure 2）.Analyzing its reason is：It is generally low
Temperature loading arm liquid pipe system peculiar to vessel is bolted with supporting construction, and gas phase tubing and liquid pipe system are adopted
Flange connects, and such structure design continues to use room temperature medium loading arm, supporting construction, liquid pipe system, gas phase tubing
Temperature deformation amount be more or less the same, therefore the drawing inside tubing, compressive stress are not too large, and loading arm can trouble free service.But
If pumped (conveying) medium is that the temperature shrinkage amount of super-low liquid, gas phase tubing and the liquid pipe systems such as LNG, low temperature ethylene is remote
More than supporting construction temperature deformation amount, there is supporting construction, liquid pipe system, the deflection difference of gas phase tubing more
Cause the presence of larger tension and compressive stress inside tubing, it is hidden that this makes low temperature loading arm there is very big safety when working
Suffer from.Therefore, a kind of new technical scheme of exigence solves above-mentioned technical problem.
The content of the invention
In order to solve above-mentioned problem, the invention discloses a kind of low temperature two-tube loading arm peculiar to vessel, the technical scheme
It is simple structure, compact, the technical scheme to the connection between liquid pipe system and supporting construction and liquid pipe system and
Connection between gas phase tubing carries out appropriate design, and the program can make supporting construction, liquid pipe system in any operating mode
Under, including the deformation of ambient temperature and worst cold case is separate, while gas phase tubing and liquid pipe system are any
Under operating mode, including the deformation of ambient temperature and worst cold case is also separate, especially under worst cold case, liquid pipe system and
The contraction distortion of gas phase tubing is arbitrarily free, which eliminates pipe internal stress and ensure that low temperature two-tube loading arm safety peculiar to vessel
Use.
To achieve these goals, technical scheme is as follows, low temperature two-tube loading arm peculiar to vessel, it is characterised in that
The two-tube loading arm includes that column, liquid phase column tube, lower rope sheave, Weight plate, outer arm driving, horizontal drive, inner arm drive, prop up
Support case, upper rope sheave, outer arm support, outer arm connector, solution-air pipe connections I, gas in liquid phase inner arm pipe, maintenance platform, liquid phase-
Liquid pipe hold-down support, liquid phase external arm tube, gas phase external arm tube, gas phase inner arm pipe, gas phase column tube, hydraulic pressure substation, nitrogen distribution system
System, solution-air pipe UNICOM component, solution-air pipe connections II, liquid phase ejection escape system, liquid phase snap joint, gas phase ejection escape
System, rotating shaft case, steel wire rope, liquid phase column tube fixation kit and gas phase column tube fixation kit, the steel wire rope is arranged on
Between upper rope sheave and lower rope sheave, the maintenance platform is arranged on the top of loading arm, and nitrogen purge system is arranged on lower rope sheave
Lower section, the hydraulic pressure substation is arranged on the bottom of loading arm column, and the nitrogen distribution system is arranged on column.
As a modification of the present invention, the solution-air pipe connections I by gas phase pipe connected pipe, cover plate, backing plate, base plate,
Liquid phase pipe connected pipe and sliding panel are constituted, and the gas phase pipe connected pipe is welded into a whole with sliding panel, and the backing plate is arranged
Can translate between cover plate and base plate and in vertical connecting tube axial plane △ L2 and rotation.
Used as a modification of the present invention, the solution-air pipe hold-down support is by gas phase pipe reinforcement, gas phase pipe floor, company
Contact pin, liquid-phase tube reinforcement, liquid-phase tube floor, draining board, limit baffle ring, seat tube, postive stop baffle, every cold piece and cylinder structure
Into the gas phase pipe reinforcement, gas phase pipe floor are used to fix gas phase pipe, and the liquid-phase tube reinforcement, liquid-phase tube floor are used for
Fixed liquid phase pipe, the draining board, limit baffle ring are arranged on seat tube.Solution-air is fixed pipe support and arranges draining board and every cold
Block can largely reduce cold energy and be transferred to supporting construction from tubing, whole solution-air pipe hold-down support by gas phase pipe and
Liquid-phase tube is fixed and only can freely rotated relative to outer arm supporting base end portion.
Used as a modification of the present invention, the solution-air pipe connections II is by gas phase pipe connected pipe, cover plate, baffle plate, guiding
Groove, base plate, liquid phase pipe connected pipe and sliding guide are constituted, and gas phase pipe connected pipe and sliding guide weld integral, the gear
Plate is arranged between cover plate and base plate, and on the baffle plate gathering sill is provided with.Gas phase pipe connected pipe can be in gathering sill along vertically
Upwards along translation δ 2 straight down, solution-air pipe connections II can cause gas phase pipe and liquid-phase tube in the fixation of solution-air pipe to translation δ 1
The part independence and freedom of encorbelmenting of seat front end is stretched.
Used as a modification of the present invention, the gas phase column pipe coupling component includes gas phase column pipe coupling component by covering
Plate, upright post connecting plate and every cold piece, described to be arranged in cover plate every cold piece, gas phase column tube can freely stretch along tube axis direction
And can be along pipe axial rotation.
As a modification of the present invention, the liquid phase column tube fixation kit be include clip, every cold piece, push rod emit with
And push rod, described to be arranged in clip every cold piece, the push rod emits and is arranged on push rod, liquid phase column tube by clip tie tight every
Cold piece is further fixed.But liquid phase column tube still can be along the axially free translation of pipe and rotation.
As a modification of the present invention, in the phase outer arm connector by ribs, reinforcement, draining board, connecting tube,
Spacing ring, every cold liner composition, the ribs, reinforcement be arranged on liquid-phase tube, and the draining board is arranged on liquid-phase tube
Lower section, is provided with two breach on the ribs, on the one hand the temperature stress under release worst cold case on ribs, the opposing party
Swivel joint nitrogen purge line is arranged in face.Outer arm connector is integral with liquid-phase tube welding in liquid phase can be vertical in spacing ring
Any translation △ L1 in connecting tube axial plane, it is also possible to along connecting tube axial rotation；Draining board is set simultaneously and every cold liner
Cold energy can to greatest extent be reduced and be transferred to supporting construction.
Used as a modification of the present invention, the nitrogen purge system is set to the purging system of paralleling model.
Relative to prior art, advantages of the present invention is as follows, and 1）Whole Technical Design is ingenious, simple and compact for structure, and 2
The technical scheme to the connection between liquid pipe system and supporting construction and liquid pipe system and gas phase tubing it
Between connection carry out appropriate design, the program can make supporting construction, liquid pipe system include ambient temperature under any operating mode
It is separate with the deformation of worst cold case, while gas phase tubing and liquid pipe system include environment temperature under any operating mode
The deformation of degree and worst cold case is also separate, especially under worst cold case, the receipts of liquid pipe system and gas phase tubing
Compression deformation is arbitrarily free, which eliminates pipe internal stress and ensure that low temperature two-tube loading arm safe handling peculiar to vessel；3）The nitrogen
Purging system is set to the purging system of paralleling model, and parallel swivel joint nitrogen purging blows with tandem swivel joint nitrogen
Sweep and mainly have the advantage that, cryogenic swivel purging is general all than relatively low with nitrogen pressure, according to the bore of loading arm
It is different generally in 0.03 ~ 0.07MPa or so with inner arm pipe, outer arm length of tube, and purge the nitrogen pipeline external diameter of swivel joint
Generally 10 × 1mm of φ specifications, the inner arm pipe and outer arm pipeline of low temperature loading arm peculiar to vessel is general all long, so results in
Nitrogen purge line is relatively long, adds that nitrogen pressure is relatively low, and the pressure loss of nitrogen is larger, and several swivel joints of front end blow
The effect swept is just not ideal, easily causes swivel joint frost and blocks, and rotates dumb, and the service life of swivel joint is produced
Raw to affect, parallel swivel joint purging system causes nitrogen crushing to greatly reduce, it is ensured that the purging effect of swivel joint, and
Connection formula swivel joint nitrogen purge system can avoid nitrogen outlet blocking cause blocking after swivel joint purge less than phenomenon；
4）The technical scheme reasonable Arrangement supporting construction, the position of solution-air pipe connections avoid pipeline covibration, while passing through each
Connector indoor design have every cold piece, can effectively increase damping every cold liner and reduce the vibration of tubing, it is to avoid pipeline
Resonance problem in specified handling flow, it is ensured that the safety in cargo handling process.
Description of the drawings
Fig. 1-1,1-2 this loading arm overall structure diagrams；
Fig. 2 connects ship view for existing loading arm；
Fig. 3 connects ship original state schematic diagram for the present invention；
Fig. 4 is to connect status architecture schematic diagram before and after ship；
Fig. 5 is gas phase pipeline and liquid pipe attachment structure schematic diagram；
Fig. 6-1,6-2 are solution-air pipe connections I structural representations；
Fig. 7-1,7-2 are solution-air pipe hold-down support structural representation；
Fig. 8-1,8-2 are solution-air pipe connections II structural representations；
Fig. 9 is gas phase column tube connecting component structure schematic diagram；
Figure 10 liquid phase column tube fixation kit structural representations；
Figure 11-1,11-2 liquid phase inner arm connecting-piece structure schematic diagrams；
Figure 12 is series connection purging system structural representation；
Figure 13 is purging system structural representation in parallel；
Figure 14-1,14-2 are gas phase tubing and liquid pipe system variant view；
Figure 15-1,15-2 are liquid pipe system and gas phase tubing deformation state schematic diagram；
Wherein：Column 1, liquid phase column tube 2, lower rope sheave 3, Weight plate 4, outer arm drive 5, horizontal drive 6, inner arm drive 7,
Case 8, upper rope sheave 9, outer arm is supported to support 10, liquid phase inner arm pipe 11, maintenance platform 12, liquid phase inner arm connector 13, solution-air Guan Lian
Fitting I 14, solution-air pipe hold-down support 15, liquid phase external arm tube 16, gas phase external arm tube 17, gas phase inner arm pipe 18, gas phase column tube
19th, hydraulic pressure substation 20, nitrogen distribution system 21, solution-air pipe UNICOM component 22, solution-air pipe connections II 23, liquid phase promptly take off
From system 24, liquid phase snap joint 25, gas phase ejection escape system 26, rotating shaft case 27, steel wire rope 28, liquid phase column tube fixation group
Part 29, gas phase column tube fixation kit 30, gas phase, liquid phase inner arm, support case 31, gas phase, liquid phase outer arm, outer arm support 32, match somebody with somebody
The low temperature of weight system 33, supporting construction connects boat state 34, the low temperature of liquid pipe system and connects boat state 35, gas phase tubing
Low temperature connects boat state 36, original state 37, gas phase pipe 38, liquid-phase tube 39, outer arm and supports 40, column 41, liquid-phase tube 42, rotation to connect
Head nitrogen sparge tube 43, supporting construction 44, liquid phase inner arm pipe 45, column tube 46.
Specific embodiment
In order to deepen that the present invention is appreciated and understood by, with reference to the accompanying drawings and detailed description, this is further elucidated
Invention.
Embodiment 1：
Referring to Fig. 1-Fig. 4, temperature two-tube loading arm peculiar to vessel, the two-tube loading arm includes column 1, liquid phase column tube 2, lower rope
Wheel 3, Weight plate 4, outer arm drives 5, horizontal drive 6, inner arm to drive 7, support case 8, upper rope sheave 9, outer arm to support 10, liquid phase inner arm
Pipe 11, maintenance platform 12, liquid phase inner arm connector 13, solution-air pipe connections I 14, solution-air pipe hold-down support 15, liquid phase outer arm
Pipe 16, gas phase external arm tube 17, gas phase inner arm pipe 18, gas phase column tube 19, hydraulic pressure substation 20, nitrogen distribution system 21, solution-air pipe
UNICOM's component 22, solution-air pipe connections II 23, liquid phase ejection escape system 24, liquid phase snap joint 25, gas phase ejection escape
System 26, rotating shaft case 27, steel wire rope 28, liquid phase column tube fixation kit 29 and gas phase column tube fixation kit 30, the steel
Cord is arranged between rope sheave and lower rope sheave, and the maintenance platform is arranged on the top of loading arm, and nitrogen purge system is arranged
In the lower section of lower rope sheave, the hydraulic pressure substation 20 is arranged on the bottom of loading arm, and the nitrogen distribution system 21 is arranged on column
Side lower part.Liquid phase inner arm connector 13 is fixed liquid phase inner arm pipe with reinforcement 132 by ribs 131, and liquid phase inner arm connects
Fitting relative support case can arbitrarily be moved in spacing ring 135, and spacing ring is welded as a whole with case is supported.As shown in figure 11.
Solution-air pipe connections I 14 links together liquid phase inner arm tube end elbow and gas phase inner arm tube end elbow along pipe axle center,
Because the structure designs of solution-air pipe connections I 14 discharge superfluous constraint, gas phase pipe and liquid-phase tube can be made to change at position mutually certainly
By moving and rotating, as shown in Figure 6.Solution-air pipe hold-down support 15 is fixed by gas phase pipe reinforcement 151, gas phase pipe floor 152
Gas phase external arm tube, liquid-phase tube reinforcement 154, the fixed liquid phase external arm tube of liquid-phase tube floor 155 simultaneously pass through connection sheet 153 by outside gas phase
Arm pipe and liquid phase external arm tube are fixed herein, are supported with outer arm by limit baffle ring 157, seat tube 158, postive stop baffle 159 and are connected
Connect, and seat tube 158 can freely be rotated at here constraint relative to outer arm support, as shown in Figure 7.Solution-air pipe connections II23 will
Liquid phase external arm tube end bends and gas phase external arm tube end bends link together along pipe axle center, due to solution-air pipe connections
II23 structure designs discharge superfluous constraint, gas phase pipe and liquid-phase tube can be made to change mutually free axially retractable at position, such as
Shown in Fig. 8.
Then the clip 291, second of liquid phase column tube fixation kit 29 is emitted every cold piece 292 column tube that fastens by push rod
293 and push rod 294 column tube is fixed in column, column tube can freely stretch vertically and rotate, as shown in Figure 10.
Gas phase column tube fixation kit 30 is clamped gas phase column tube admittedly every cold piece 303 by the 3rd cover plate 301 and the 3rd
It is fixed, then upright post connecting plate 302 is welded on column, so can ensure that gas phase column tube can freely be stretched along tube axis direction
Contracting and rotation, as shown in Figure 9.
Embodiment 2：Referring to Fig. 6, used as a modification of the present invention, the solution-air pipe connections I is by the first gas phase Guan Lian
Adapter 141, the first cover plate 142, backing plate 143, the first base plate 144, the first liquid phase pipe connected pipe 145 and sliding panel 146 are constituted,
The first gas phase pipe connected pipe 141 is welded into a whole with sliding panel 146, and the backing plate is arranged between cover plate and base plate,
And △ L2 can be translated in vertical connecting tube axial plane, arm lengths and largest enveloping angle calculation institute inside and outside this numerical basis
, as shown in Figure 6.Using solution-air pipe connections I gas phase pipe and liquid-phase tube can be made to be mutually shifted in the connection and mutually rotate.
Embodiment 3：Referring to Fig. 7, used as a modification of the present invention, the solution-air pipe hold-down support 15 is added by gas phase pipe
It is strong muscle 151, gas phase pipe floor 152, connection sheet 153, liquid-phase tube reinforcement 154, liquid-phase tube floor 155, draining board 133, spacing
Baffle ring 157, seat tube 158, postive stop baffle 159, first are constituted every cold piece 1510 and cylinder 1511, the gas phase pipe reinforcement
151st, gas phase pipe floor 152 is used to fix gas phase pipe, and the liquid-phase tube reinforcement 154, liquid-phase tube floor 155 are used for fixed liquid phase
Pipe, the draining board 133, limit baffle ring 157 are arranged on seat tube 158.Solution-air is fixed pipe support and arranges the He of draining board 133
First can largely reduce cold energy every cold piece 1510 is transferred to supporting construction from tubing, as shown in Figure 7.
Embodiment 4：Referring to Fig. 8, used as a modification of the present invention, the solution-air pipe connections II 23 is by the second gas phase
Pipe connected pipe 231, the second cover plate 232, baffle plate 233, gathering sill 234, the second base plate 235, second liquid phase pipe connected pipe 236 and
Sliding guide 237 is constituted, and the second gas phase pipe connected pipe 231 and sliding guide 237 weld integral, and the baffle plate 233 is arranged on
Between second cover plate 232 and the second base plate 235, gathering sill is provided with the baffle plate, the second gas phase pipe connected pipe 231 can lead
Along translation δ 1 straight up, along translation δ 2 straight down, δ 1, δ 2 can be calculated according to formula δ=α L △ T into groove 234,
As shown in Figure 8.Using solution-air pipe connections II gas phase pipe and liquid-phase tube can be made freely to stretch vertically in the connection.
Embodiment 5：Referring to Fig. 9, used as a modification of the present invention, the gas phase column pipe coupling component 30 includes gas phase
Column pipe coupling component by the 3rd cover plate 301, upright post connecting plate 302 and the 3rd every cold piece 303, it is described to be arranged on cover plate every cold piece
Interior, gas phase column tube can freely stretch along tube axis direction and can be along pipe axial rotation, as shown in Figure 9.Using gas phase column tube
Coupling assembly（30）Gas phase column tube can be made freely to stretch vertically relative to column.
Embodiment 6：Referring to Figure 10, used as a modification of the present invention, the liquid phase column tube fixation kit is to include card
Hoop 291, second emits 293 and push rod 294 every cold piece 292, push rod, and described to be arranged in clip every cold piece, the push rod emits and sets
Put on push rod, liquid phase column tube is tied second tight every cold piece 292 and then is fixed by clip 291.But liquid phase column tube is still
Can be along axially free translation and rotation be managed, as shown in Figure 10；Liquid phase column tube phase can be made using liquid phase column tube fixation kit 29
For column freely stretches vertically.
Embodiment 7：Referring to Figure 11, used as a modification of the present invention, the liquid phase inner arm connector 13 is by ribs
131st, reinforcement 132, draining board 133, connecting tube 134, spacing ring 135, constitute every cold liner 136, the ribs 131, plus
Strong muscle 132 is arranged on liquid-phase tube, and the draining board is arranged on the lower section of liquid-phase tube, and two are provided with the ribs 131
Breach, on the one hand the temperature stress under release worst cold case on ribs 131, on the other hand arranges swivel joint nitrogen sparge tube
Line.Liquid phase inner arm connector is integral with liquid-phase tube welding can be in the axial plane of vertical connecting tube 134 in spacing ring 135 arbitrarily
Translation △ L1, arm lengths and formula δ=α L △ T and combine and connect ship original state and stable state is calculated inside and outside this numerical basis
Arrive, it is also possible to along the axial rotation of connecting tube 134；Draining board 133 is set simultaneously and cold energy can be to greatest extent reduced every cold liner 136
Supporting construction is transferred to, as shown in figure 11.
Embodiment 8：Referring to Figure 12, used as a modification of the present invention, the nitrogen purge system is set to paralleling model
Purging system.The cryogenic swivel nitrogen purging of low temperature according to the present invention two-tube loading arm peculiar to vessel is blown using paralleling model
Sweep, as shown in figure 12, the swivel joint of usual low temperature loading arm is purged using tandem nitrogen, as shown in figure 13.Parallel rotation
Adaptor nitrogen is purged to compare with tandem swivel joint nitrogen purging and mainly had the advantage that：Cryogenic swivel purging nitrogen
Atmospheric pressure is general all than relatively low（Bore according to loading arm is different generally in 0.03 ~ 0.07MPa with inner arm pipe, outer arm length of tube
Left and right）, and the nitrogen pipeline external diameter for purging swivel joint is generally φ 10 × 1mm specifications, low temperature loading arm peculiar to vessel it is interior
Arm pipe and outer arm pipeline are general all long, and it is relatively long so to result in nitrogen purge line, and it is relatively low to add nitrogen pressure, nitrogen
The pressure loss of gas is larger, and the effect of several swivel joints purging of front end is just not ideal, easily causes swivel joint frost
Block, rotate dumb, impact is produced on the service life of swivel joint.Parallel swivel joint purging system causes nitrogen pressure
Damage is greatly reduced, it is ensured that the purging effect of swivel joint.Parallel swivel joint nitrogen purge system can avoid nitrogen from going out
Mouthful blocking cause blocking after swivel joint purge less than phenomenon, Figure 12 and Figure 13 can be contrasted, if in Figure 12 purging outlet A block up
Plug, swivel joint thereafter can obtain normal purge, such as the purging outlet obstruction of swivel joint A in Figure 13, rotation thereafter
Joint all will purging less than, cause all swivel joints after swivel joint A to be all frozen and block, rotate it is motionless, to rotation
The service life of joint and safety in production are impacted.
Operation principle：The overall evaluation of a technical project considers the applying working condition of low temperature two-tube loading arm peculiar to vessel, when low temperature it is peculiar to vessel double
Pipe loading arm does not connect ship time, supporting construction, liquid pipe system, gas phase tubing substantially without relative deformation, now gas phase
The stress that tubing, liquid pipe internal system are produced without temperature deformation, supporting construction, liquid pipe system, gas phase pipeline
System axis overlap, original state as shown in Figure 3；When low temperature two-tube loading arm peculiar to vessel connects ship time, supporting construction and tubing
The temperature difference it is especially big, supporting construction, liquid pipe system, gas phase tubing deflection are inconsistent, now, can respectively make support
The state of system, gas phase tubing and liquid pipe system in freely stretching, as shown in figure 4, can so solve pipeline
System is because of internal stress problems of too caused by low-temperature shrink；After low temperature two-tube loading arm handling groove ship peculiar to vessel terminates, gas phase, liquid
Phase tubing can be recovered to original state because of the rising of temperature again.
The present invention is to the connection between liquid pipe system and supporting construction and liquid pipe system and gas phase pipeline system
Connection between system carries out appropriate design, and supporting construction, liquid pipe system can be made under any operating mode by this design（Including ring
Border temperature and worst cold case）Deformation it is separate, as shown in figure 14；Simultaneously gas phase tubing and liquid pipe system are in office
Under what operating mode（Including ambient temperature and worst cold case）Deformation it is also separate, especially under worst cold case, liquid pipe system
The contraction distortion of system and gas phase tubing is arbitrarily free, as shown in figure 15, which eliminates pipe internal stress and ensure that low temperature ship
Used safely with two-tube loading arm.Reasonable Arrangement supporting construction, the position of solution-air pipe connections avoid pipeline covibration, and gas-
The arrangement of outer arm connector can affect the rigidity value of whole tubing in liquid pipe connector, solution-air pipe hold-down support, gas-liquid.
The bore for being first depending on harbour parameter, ship shape parameter and low temperature two-tube loading arm peculiar to vessel determines the overall dimensions of two-tube loading arm,
Then each rank basic frequency that model analyses calculate low temperature two-tube loading arm tubing peculiar to vessel is carried out by finite element software
（f1、f2、f3、f4……）.Low temperature two-tube handling peculiar to vessel are calculated by finite element software under design discharge this external drive
The frequency of vibration f of arm tubing0, by adjusting outer arm connector in solution-air pipe connections, solution-air pipe hold-down support, gas-liquid
Position avoid each rank natural frequency of equipment, can so avoid LNG ship loading arm tubing when liquid is loaded and unloaded
Covibration；Having every cold piece, every cold liner by each connector indoor design simultaneously can effectively increase damping reduction pipeline
The vibration of system.If outer arm connector arrangement is unreasonable in solution-air pipe connections, solution-air pipe hold-down support, gas-liquid, outside is swashed
The frequency of vibration f for encouraging0Each rank basic frequency of two-tube loading arm tubing peculiar to vessel with low temperature（f1、f2、f3、f4……）Certain rank frequency
When rate is close or equal, in specified handling flow, tubing will resonate, and now pipe temperature is very low, it is easy to occur
Low stress fatigue brittle failure without any tendency, causes security incident.Therefore, solution-air pipe connections, solution-air pipe hold-down support, gas
The installation site of outer arm connector all has to pass through calculating and determines in liquid.
The present invention can also be by 1 group of at least one of technical characteristic described in embodiment 2,3,4,5,6,7,8 and embodiment
Conjunction forms new embodiment.
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention, not for limiting the present invention
Protection domain, the equivalent made on the basis of above-mentioned technical proposal or replacement belong to the protection model of the present invention
Enclose.
Claims (8)
1. a kind of low temperature two-tube loading arm peculiar to vessel, it is characterised in that the two-tube loading arm includes column（1）, liquid phase column tube
（2）, lower rope sheave（3）, Weight plate（4）, outer arm drive（5）, horizontal drive（6）, inner arm drive（7）, support case（8）, upper rope sheave
（9）, outer arm support（10）, liquid phase inner arm pipe（11）, maintenance platform（12）, liquid phase inner arm connector（13）, solution-air pipe connections
I（14）, solution-air pipe hold-down support（15）, liquid phase external arm tube（16）, gas phase external arm tube（17）, gas phase inner arm pipe（18）, gas phase stand
Column jecket（19）, hydraulic pressure substation（20）, nitrogen distribution system（21）, solution-air pipe UNICOM component（22）, solution-air pipe connections II
（23）, liquid phase ejection escape system（24）, liquid phase snap joint（25）, gas phase ejection escape system（26）, rotating shaft case（27）, steel
Cord（28）, liquid phase column tube fixation kit（29）And gas phase column tube fixation kit（30）, the steel wire rope is arranged on
Between rope sheave and lower rope sheave, the maintenance platform is arranged on the top of loading arm, and nitrogen purge system is arranged on stud sides lower section,
The hydraulic pressure substation is arranged on the column side of loading arm, and the nitrogen distribution system is arranged on column.
2. low temperature according to claim 1 two-tube loading arm peculiar to vessel, it is characterised in that the solution-air pipe connections I is by
One gas phase pipe connected pipe（141）, the first cover plate（142）, backing plate（143）, the first base plate（144）, the first liquid phase pipe connected pipe
（145）And sliding panel（146）Constitute, the first gas phase pipe connected pipe（141）With sliding panel（146）It is welded into a whole,
The backing plate is arranged between cover plate and base plate.
3. low temperature according to claim 1 and 2 two-tube loading arm peculiar to vessel, it is characterised in that the solution-air pipe hold-down support
（15）By gas phase pipe reinforcement（151）, gas phase pipe floor（152）, connection sheet（153）, liquid-phase tube reinforcement（154）, liquid-phase tube
Floor（155）, draining board（133）, limit baffle ring（157）, seat tube（158）, postive stop baffle（159）, first every cold piece
（1510）And cylinder（1511）Constitute, the gas phase pipe reinforcement（151）, gas phase pipe floor（152）For fixing gas phase pipe,
The liquid-phase tube reinforcement（154）, liquid-phase tube floor（155）For fixed liquid phase pipe, the draining board（133）, limit baffle ring
（157）It is arranged on seat tube（158）On.
4. low temperature according to claim 3 two-tube loading arm peculiar to vessel, it is characterised in that the solution-air pipe connections II
（23）
By gas phase pipe connected pipe（231）, the second cover plate（232）, baffle plate（233）, gathering sill（234）, the second base plate（235）,
Two liquid phase pipe connected pipes（236）And sliding guide（237）Constitute, gas phase pipe connected pipe（231）And sliding guide（237）Welding
It is integral, the baffle plate（233）It is arranged on the second cover plate（232）With the second base plate（235）Between, it is provided with the baffle plate and leads
To groove.
5. a kind of low temperature according to claim 4 two-tube loading arm peculiar to vessel, it is characterised in that the gas phase column tube connection
Component（30）Including gas phase column pipe coupling component by the 3rd cover plate（301）, upright post connecting plate（302）With the 3rd every cold piece
（303）, described to be arranged in cover plate every cold piece, gas phase column tube can freely stretch along tube axis direction and can axially turn along pipe
It is dynamic.
6. a kind of low temperature according to claim 5 two-tube loading arm peculiar to vessel, it is characterised in that the liquid phase column tube is fixed
Component is to include clip（291）, second every cold piece（292）, push rod emits（293）And push rod（294）, it is described to be arranged on every cold piece
In clip, the push rod emits and is arranged on push rod, and liquid phase column tube passes through clip（291）Second is tied tight every cold piece（292）Further
It is fixed.
7. a kind of low temperature two-tube loading arm peculiar to vessel according to claim 5 or 6, it is characterised in that the liquid phase inner arm connects
Fitting（13）By ribs（131）, reinforcement（132）, draining board（133）, connecting tube（134）, spacing ring（135）, every cold lining
Pad（136）Composition, the ribs（131）, reinforcement（132）It is arranged on liquid-phase tube, the draining board is arranged on connecting tube
And supporting construction between, there are the function of hindering cold energy transmission, the ribs（131）On be provided with two breach for dischargeing
The outer peripheral stress of ribs under ultra low temperature state.
8. a kind of low temperature according to claim 7 two-tube loading arm peculiar to vessel, it is characterised in that the nitrogen purge system sets
It is set to the purging system of paralleling model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620681879.5U CN206176036U (en) | 2016-07-01 | 2016-07-01 | Marine double -barrelled loading and unloading arm of low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620681879.5U CN206176036U (en) | 2016-07-01 | 2016-07-01 | Marine double -barrelled loading and unloading arm of low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206176036U true CN206176036U (en) | 2017-05-17 |
Family
ID=58673821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620681879.5U Withdrawn - After Issue CN206176036U (en) | 2016-07-01 | 2016-07-01 | Marine double -barrelled loading and unloading arm of low temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206176036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439484A (en) * | 2016-07-01 | 2017-02-22 | 韩培 | Double-pipeline loading and unloading arm for low-temperature ship |
-
2016
- 2016-07-01 CN CN201620681879.5U patent/CN206176036U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439484A (en) * | 2016-07-01 | 2017-02-22 | 韩培 | Double-pipeline loading and unloading arm for low-temperature ship |
| CN106439484B (en) * | 2016-07-01 | 2019-07-12 | 韩培 | Low temperature two-tube loading arm peculiar to vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170517 Effective date of abandoning: 20190712 |