CN207407057U - The gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon - Google Patents

Abstract

The utility model is related to a kind of gas burning systems on the multi-functional filling landing stage of aqueous hydrocarbon, and liquid system, cold insulation of LNG system and auxiliary system are unloaded including LNG liquefied cargo systems, LNG process pipe works, LNG loading systems, LNG；The auxiliary system includes pressure relief system, BOG supply and instrument wind system.Loading system in the technical solution is with unloading liquid system using integrated design, the designing scheme fully utilizes combustion gas process pipeline, a set of pipe-line system can be shared by filling operation and liquid discharging operation, this kind of designing scheme had both met Specification Design requirement, pipeline mileage is greatly saved simultaneously, the amount of vaporization of BOG gases is reduced, cost has both been saved and has also saved system occupied space and place.

Description

The gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon

Technical field

The present invention relates to a kind of gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon, belongs to shipbuilding technical field.

Background technology

2014, based on the conditions of the current stage of communications and transportation development, traffic and transportation science development, traffic is better achieved Department of Transportation proposes construction --- comprehensive traffic, wisdom traffic, green traffic, the safety traffic of " four traffic ".LNG is as cleaning The energy is the strong pushing hands for developing " green traffic ", and to promote LNG, in the application development of water transport project, Department of Transportation puts into effect A series of policies and measures：

Department of Transportation's issue《Department of Transportation is on the instruction for promoting water transport project application liquefied natural gas》, It is the Top-layer Design Method of State-level, has shown that China is promoting clean energy resource application, adjustment energy structure, promoting water transport emission reduction etc. The proactive of aspect.To carry out《Instruction》, it is pushed further into applications of the LNG in water transport project, communications and transportation It issues in portion《Water transport project application liquefied natural gas pilot demonstration work embodiment》Embodiment, it is determined that《Water transport project should With the first batch of pilot demonstrative project list of liquefied natural gas》, Changjiang River Trunk Line Jiangsu Section water transport project application LNG is as first batch of demonstration item Mesh, is explored, demonstrating leads by pilot, and Changjiang River Trunk Line ship is driven to apply LNG, is that China's water transport project energy structure improves Important means, meet the needs of China green traffic development.

Sea port China of enterprise has designed and has built up first generation LNG filling stations waterborne " harbour star 01 " number at present, is sent out according to company Exhibition and industry requirement, company prepare filling station on design aqueous hydrocarbon multifunctional water of new generation, are provided simultaneously with LNG, oil product, fresh water Filled function.Filling landing stage structure function currently on the market is relatively simple, and therefore, there is an urgent need for a kind of new technical sides Case solves above-mentioned technical problem.

The content of the invention

The present invention is exactly for technical problem in the prior art, provides a kind of multi-functional filling landing stage of aqueous hydrocarbon Gas burning system, the technical solution smart structural design is compact, which is provided simultaneously with the filling work(of LNG, oil product, fresh water Energy.

To achieve these goals, technical scheme is as follows：

A kind of gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon, including LNG liquefied cargo systems, LNG process pipe works, LNG loading systems, LNG unload liquid system, cold insulation of LNG system and auxiliary system；The liquefied cargo system includes LNG storage tank, institute The LNG stated goes out the liquid outlet of liquid storage tank and inlet is arranged on the top of tank contents device, and pump chamber is set inside LNG storage tank, Pump chamber is inside and outside bladder structure, and middle level is vacuum interlayer, and pumping system is built in bottom end under pump work chamber, the inlet of pump work chamber Place is connected with the urgent bottom stop valve of low temperature；The LNG, which unloads liquid system, to be included unloading liquid operating platform, is set on liquid platform is unloaded The interlude prepackage emergency cut-off part of liquid pipe mouth, the flange unloaded at liquid pipe mouth and pipeline is unloaded, flange end prepackage is fast Fast linker B ends, the filling port prepackage quick connector A ends of LNG filling ships, A/B ends have mating special-shaped decorative pattern, by not Rules rotating can make A/B ends realize quick links, and A/B ends are provided with rubber seal；LNG loading systems include filling Platform；Two sleeve openings are reserved respectively on liquid platform and filling platform in described unload, and are filled, are unloaded liquid part pipeline and share, work as pipe Road separates when being connected to LNG process pipe works, is divided into inlet and liquid outlet that 4 tunnels connection LNG goes out liquid storage tank；Described Cold insulation of LNG system is included in the Cold-keeping Layer of LNG process pipe works setting, and the Cold-keeping Layer is specially：It is straight in straight-through low temperature The position that spool road is longer, shut-off valve is more, elbow is more, using resilient foam material cold insulation；It is corrosion-resistant, it is resistance to strike, it is resistance to The outer layer position of high temperature uses alloy protecting layer；The prefabricated cold insulations of PPR are used at pipeline support position；The auxiliary system includes letting out Pressure system, BOG supply and instrument wind system.

As a modification of the present invention, ultravacuum multi-lay winding cold insulation is used in pressure vessel or pressure tube portions, It is realized by prefabricated mode, by the way that glass fiber paper to be carried out to compound, winding of tiling after composite material is punched in batches with aluminium foil In inner tube or inner cylinder, the winding number of plies is 30~50 layers, finally using steel material sealed outer pipe or outer barrel, reserved Pumping hole vacuumized.

As a modification of the present invention, pumping system pump work chamber is in suspended structure in tank contents device, and has down Support is hung to weld with pump work chamber.

As a modification of the present invention, being provided in tank contents device prevents cryogenic liquid various factors on landing stage Liquid is caused to shake punching, evaporation and the drastically swash plate of boost conditions.

As a modification of the present invention, connect the top inlet tube of inlet and fill structure for the porous mouth leaching of single tube.

As a modification of the present invention, being internally located in LNG storage tank outer barrel in the range of 60 ° of peak both sides increases by two Layer adiabatic cotton, back-up sand is carried out after being fixed with hexagonal stainless steel net to interlayer again.

As a modification of the present invention, the operation valve and instrument of LNG storage tank are from tank body Base top contact.

As a modification of the present invention, all safety valve delivery pipes of LNG storage tank converge to safe diffusion system and concentrate It is discharged, shut-off valve and quick action emergency valve is provided with into, return line to jacking, bottom.

Compared with the prior art, the invention has the advantages that,

1st, with unloading liquid system using integrated design, which fully utilizes the loading system in the technical solution Combustion gas process pipeline, that is, a set of pipe-line system can be shared by filling operation and liquid discharging operation, this kind of designing scheme both meets specification Design requirement, while pipeline mileage is greatly saved, the amount of vaporization of BOG gases is reduced, cost has both been saved and has also saved system Occupied space and place；

2nd, storage tank go out liquid form be on go out liquid and be domestic initiation and apply, this innovation and creation advantage is meeting rule On the premise of the requirement of model, it can greatly save cost to avoid ice chest and storage tank cofferdam is set, save the duration, while by space Utilize maximization.

3. compound cold insulation system utilizes the respective advantage of different adiabatic patterns：Elastomer foamed thermal insulation material is convenient for big rule Mould is utilized, cut out convenient for cutting, convenient for the utilization of labyrinth form；Foam-in-place form can be constructed with adaptation to local conditions, be had Higher intensity may be used as the cold insulation of support section；Vacuum multi-layer wound insulation pipeline has higher heat-insulating property, can be with It is prefabricated, available for fixing circuit, the pipeline heat insulation easily welded.

4. employing pumping system built in storage tank, in addition expense that pump pond is set and place are avoided, avoids external pumping system Caused by BOG gases and pressure transient, save LNG tubing general expenses and the duration, make full use of storage tank carries pressure, Liquid output is more smooth, powerful.

5. unloading liquid stream journey to be optimized, all land based installations are avoided, including land route unloading deck, vacuum transmission pipeline, bank The facilities such as base control system, trestle.So that all liquid discharging operations can unload complete independently on liquid platform on filling landing stage, it will The work efficiency that LNG unloads liquid improves several times, utilization rate of equipment and installations is maximized, project cost minimizes, space utilization is integrated.

6. the tank pressure of storage tank provides stable pressure source for pumping system, distance of the pumping system apart from medium source is shortened, So that filling output speed faster, power it is stronger, while save placement pump sump space, shorten LNG output pipes.7. it protects Cold effect is more preferable, and construction efficiency higher is more convenient.More prefabricated original paper is used simultaneously, is not only reduced cost, but also is saved the duration.

Description of the drawings

Fig. 1 is combustion gas process system layout drawing.

Fig. 2 is the structure diagram of the LNG storage tank of the present invention.

Specific embodiment：

In order to deepen the understanding of the present invention, the present embodiment is described in detail below in conjunction with the accompanying drawings.Need what is illustrated It is above-described embodiment, is not used for limiting protection scope of the present invention, it is made based on the above technical solutions to be equal Conversion or replacement each fall within the scope that the claims in the present invention are protected

Such as a kind of Fig. 1 to the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon shown in Fig. 2, including LNG liquefied cargo systems, LNG process pipe works, LNG loading systems, LNG, which unload liquid system, cold insulation of LNG system and auxiliary system, auxiliary system, to be included Pressure relief system, BOG supply and instrument wind system.

LNG unloads the critical workflow that liquid stream journey is LNG cargo tank fluid infusion, unloads liquid mode and unloads liquid for ship-to-ship.Flow includes LNG Filling ship berthing → LNG system pipelines systematic connection → each related valve opening → gaseous pressure balances → starts LNG and unloads liquid work Disconnect pipe-line system → nitrogen purges → to fluid level condition shutdown → respectively having closing valve to close → unloads industry → unloading liquid process monitoring → Liquid stream journey completion → LNG fills ship from pool.

Liquid operating platform is being unloaded in main operation when unloading liquid, and emergency cut-off is pre-installed by the interlude in flange and pipeline Part, its effect are that emergency occurs when unloading liquid, and blank can unload liquid pipe mouth with emergency cut-off, play safeguard protection work With.Flange end prepackage quick links device B ends, the filling port prepackage quick connector A ends of LNG filling ships, A/B ends, which have, matches somebody with somebody The special-shaped decorative pattern of set, can make A/B ends realize quick links, and the rubber seal at A/B ends can make chain by irregularly rotating Junction is not easy to leak, so as to achieve the effect that high-speed communication.

It is exactly abundant that the LNG, which unloads liquid stream journey and the maximum difference for unloading liquid stream journey on the first pickup bank formula LNG filling landing stage, Make use of LNG pipe-line systems, redesigned the first pickup bank formula LNG filling landing stage unload liquid must by land LNG transport unload Liquid is transferred to the technology path of accumulating by vacuum line again, avoids all land based installations, is passed including land route unloading deck, vacuum The facilities such as defeated pipeline, bank base control system, trestle.So that all liquid discharging operations can unloading on liquid platform solely on filling landing stage Vertical to complete, the work efficiency that LNG is unloaded to liquid improves several times, utilization rate of equipment and installations is maximized, project cost minimizes, space utilization It is integrated.

LNG filling flows are the critical workflow filled to LNG Power Vessels and the core of entire combustion gas process system Flow.Its groundwork object is LNG fuels and energy ships, and working method is ship-to-ship liquid feeding.Flow includes LNG fuels and energies Ship berthing → pipeline flowmeter precooling → LNG pipe-line systems link → each related valve opening → gaseous pressure balance → LNG storages Pump startup built in tank and fill → fill NG purgings after the completion of stage LNG Power Vessel return-air → filling machine autostop → filling → Respectively there is closing valve to close → disconnect flange → liquid feeding, return line nitrogen displacement → filling and complete Power Vessel from pool.

New liquefied cargo system and pumping system are its core components in filling process, with first generation LNG filling landing stage Loading system is compared, and the system has done larger innovation, and LNG storage tank is redesigned, and LNG goes out 16 He of liquid outlet of liquid storage tank Inlet 8 is arranged on the top of tank contents device, and cryogenic pump system is built into tank inside, and pump chamber is set in tank inside, Pump chamber is designed to inner-outer tube, and middle level is vacuum interlayer, and cryogenic pump continuous firing in pump chamber during filling, the tank pressure of storage tank is pump system System provide stable pressure source, shorten distance of the pumping system apart from medium source so that filling output speed faster, power more By force, while the space of placement pump sump is saved, shortens LNG output pipes.It is also improved in the design of charging line, directly It is filled using the link of new quick links device.

Particularly the design of liquid discharge type low-temperature storage tank is as follows：

1) the pump work chamber 7 of pumping system 6 can be placed by being equipped in inner pressurd vessel 5, and pumping system 6 is built in pump work chamber 7 and goes to the bottom At end, it is connected at the inlet 9 of pump work chamber 7 with the urgent bottom stop valve 10 of low temperature, in normal use, the urgent bottom of this low temperature Portion's stop valve 10 is constantly in normally open, when storage tank needs maintenance, the urgent bottom stop valve 10 of low temperature is closed, to overhaul Pump work chamber 7 can be entered during pumping system 6 with barrier liquid, the urgent bottom stop valve 10 of low temperature at pump work chamber inlet 9 with connecting It connects, to compensate the pipeline shrinkage problem after inner pressurd vessel feed liquor；

2) pumping system 6 is in suspended structure in pump work chamber 7 in inner pressurd vessel 5, and has projecting support 11 to be welded with pump work chamber 7 Connect, so as to support pump work chamber, while during the design of suspended structure in order to prevent after 5 feed liquor of inner pressurd vessel caused by cylinder receive Caused by contracting the problem of weld seam drawing crack；

3) be provided in inner pressurd vessel 5 prevent cryogenic liquid various factors on landing stage cause liquid shake punching, evaporation and drastically The swash plate 12 of boost conditions.

4) the top inlet tube for connecting inlet 8 is designed as the leaching of single tube porous mouth and fills structure, can fill cryogenic liquid Maidenliness when entering inner pressurd vessel.And the partial gas phase in inner pressurd vessel 5 can be made to be liquefied by low temperature absorption, to keep inner pressurd vessel in filling process The relative stability of 5 gaseous pressure.

5) being internally located in storage tank outer barrel 13 in the range of 60 ° of peak both sides increases by two layers of adiabatic cotton 14, with hexagonal not It becomes rusty after steel mesh 15 is fixed and back-up sand is carried out to interlayer again.The purpose of this way is to prevent storage tank after using for a longer period due to thermal insulation The pearlife of layer occurs sedimentation and influences the insulation effect of storage tank.

6) tank contents device 5 employs combined support with storage tank outer barrel 13 (one end is fixed, one end slides), it is ensured that It will not make relative displacement and malformation and inner pressurd vessel occur between inner pressurd vessel and housing because of rocking in use The phenomenon that support and pipeline are broken due to shrinkage after having filled cryogenic liquid.

7) the operation valve of storage tank and instrument are from tank body Base top contact.Low temperature is safely stored to ensure that tank body can be stablized Liquid, tank body are provided with maltilevel security device and instrument：Radar level gauge is configured, interlayer is equipped with outer barrel explosion-protection equipment, and inner cylinder is set There is combination security system（Double safety valve）, pipeline safety valve etc..

8) all safety valve delivery pipes converge to safe diffusion system（It is designed by skid-mounted system this part）Concentration is arranged It puts.Duplicate protection is provided with into, return line to jacking, bottom（First is shut-off valve, and second is quick action emergency valve）.

Process pipeline cold insulation mode is redesigned and optimized in the present system.Common pipeline cold insulation material It is a variety of that the prefabricated cold insulation of flexible foaming cold insulation, PPR, polyurethane foam cold insulation, ultravacuum multi-lay winding cold insulation etc. can be divided into Cold insulation material.The innovation of the special design of the system cold insulation is mainly reflected in for complex large-sized system pipeline and equipment Different cold insulation requirements use different cold insulation schemes, and are combined innovation for cold insulation material.

In the straight-through position that low temperature straight line pipeline is longer, shut-off valve is more, elbow is more, protected using resilient foam material Cold, expanded material is the main heat-insulating material in the part, is covered according to tubing thickness using MULTILAYER COMPOSITE, between multilayer elastic material Brush bonding agent and fissure of displacement arrangement；Alloy protecting layer is used for corrosion-resistant, resistance to strike, heat safe outer layer position.

The prefabricated cold insulations of PPR have higher intensity and rigidity, suitable for pipeline support position, are conducive to keep the water of pipeline It is steady fixed, it prevents from settling, deform.

In order to keep higher heat insulation effect, the duration is saved, the construction volume at the scene of reducing, cold insulation requires high, body in part Long-pending position that is big, directly linking LNG storage tank is using ultravacuum multi-lay winding cold insulation, and often the part original paper is pressure vessel or pressure Solenoid material is realized by prefabricated mode.It is compound by the way that glass fiber paper is carried out with aluminium foil, it is put down after composite material is punched in batches Paving is wrapped on inner tube or inner cylinder, and the winding number of plies can be adjusted on demand, about 30~50 layers, finally using steel material Expect sealed outer pipe or outer barrel, vacuumized in reserved pumping hole, to achieve the purpose that vacuum cold insulation.The vacuum multi-layer insulation Insulation effect with reflective thermal radiation, barrier thermal convection current and heat transfer.

Claims (8)

1. a kind of gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon, it is characterised in that：Including LNG liquefied cargo systems, LNG process ducts Road system, LNG loading systems, LNG unload liquid system, cold insulation of LNG system and auxiliary system；The liquefied cargo system includes LNG Storage tank, the LNG goes out the liquid outlet of liquid storage tank and inlet is arranged on the top of tank contents device, is set inside LNG storage tank Pump chamber is put, pump chamber is inside and outside bladder structure, and middle level is vacuum interlayer, and pumping system is built in bottom end under pump work chamber, pump work chamber Inlet at be connected with the urgent bottom stop valve of low temperature；The LNG, which unloads liquid system, to be included unloading liquid operating platform, is put down unloading liquid It is provided on platform and unloads liquid pipe mouth, the interlude prepackage emergency cut-off part of the flange unloaded at liquid pipe mouth and pipeline, flange end Portion prepackage quick links device B ends, the filling port prepackage quick connector A ends of LNG filling ships, A/B ends have mating abnormity flower Line can make A/B ends realize quick links, and A/B ends are provided with rubber seal by irregularly rotating；LNG filling system System includes filling platform；Two sleeve openings are reserved respectively on liquid platform and filling platform in described unloading, and are filled, are unloaded liquid part pipeline It shares, is separated when pipeline is connected to LNG process pipe works, be divided into 4 tunnels connection LNG and go out the inlet of liquid storage tank and go out liquid Mouthful；The cold insulation of LNG system is included in the Cold-keeping Layer of LNG process pipe works setting, and the Cold-keeping Layer is specially：Straight The position that logical low temperature straight line pipeline is longer, shut-off valve is more, elbow is more, using resilient foam material cold insulation；Corrosion-resistant, resistance to Strike, heat safe outer layer position use alloy protecting layer；The prefabricated cold insulations of PPR are used at pipeline support position；The auxiliary system System includes pressure relief system, BOG supply and instrument wind system.

2. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：In pressure vessel Or pressure tube portions are realized by prefabricated mode using ultravacuum multi-lay winding cold insulation, by by glass fiber paper and aluminium foil into Row is compound, and tiling after composite material is punched in batches is wrapped on inner tube or inner cylinder, and the winding number of plies is 30~50 layers, most Afterwards using steel material sealed outer pipe or outer barrel, vacuumized in reserved pumping hole.

3. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：In tank contents Pumping system pump work chamber is in suspended structure in device, and has projecting support to be welded with pump work chamber.

4. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：In tank contents Being provided in device prevents cryogenic liquid various factors on landing stage from liquid being caused to shake punching, evaporation and the drastically anti-ripple of boost conditions Plate.

5. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：Connect inlet Top inlet tube fill structure for the leaching of single tube porous mouth.

6. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：In LNG storage tank Outer barrel, which is internally located in the range of 60 ° of peak both sides, increases by two layers of adiabatic cotton, again to interlayer after being fixed with hexagonal stainless steel net Carry out back-up sand.

7. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：LNG storage tank Valve and instrument are operated from tank body Base top contact.

8. the gas burning system on the multi-functional filling landing stage of aqueous hydrocarbon according to claim 1, it is characterised in that：LNG storage tank All safety valve delivery pipes converge to safe diffusion system concentration and are discharged, and jacking, bottom are provided with cutting into, return line Only valve and quick action emergency valve.