WO2019029005A1

WO2019029005A1 - Synchronous filling system for multiple lng tank containers, lng transport method and adapter

Info

Publication number: WO2019029005A1
Application number: PCT/CN2017/106855
Authority: WO
Inventors: 霍志亮; 张冲
Original assignee: 苏州西派格液压科技有限公司; 江苏迅隆能源有限公司
Priority date: 2017-08-05
Filing date: 2017-10-19
Publication date: 2019-02-14

Abstract

A synchronous filling system for multiple liquified natural gas (LNG) tank containers, comprising a header pipe (2), branch pipes and LNG tank containers (11). The header pipe (2) is in communication with a liquid feeding end and a return air end; the header pipe (2) is also in communication with one end of the multiple branch pipes; the other end of each branch pipe is a filling end, and each filling end is correspondingly provided with one LNG tank container (11) within the same plane; each LNG tank container (11) is provided with a receiving end (15) thereon, and an automatic docking device (3) is arranged between the filling ends of the branch pipes and the receiving ends (15). A logistics method for transporting LNG, comprising: synchronously filling multiple LNG tank containers on an LNG tank transport ship. A low-temperature quick filling adapter, comprising a male filling adapter (81) and a female filling adapter (82), wherein the male filling adapter (81) comprises a guiding column (811) and a first sealing mechanism (83) for sealing the guiding column (811); the female filling adapter (82) comprises a flow transport column (821) used by the guiding column (811) to fittingly insert and a second sealing mechanism (84) used for sealing the flow transport column (821); and the guiding column (811) and the flow transport column (821) are respectively provided therein with a first vacuum chamber (812) and a second vacuum chamber (822) along the length direction thereof.

Description

[Invention name established by ISA according to Rule 37.2] Multi-LNG tank synchronous filling system, method and joint for transporting LNG

Technical field

The invention relates to the field of LNG transportation, in particular to a multi-LNG tank synchronous filling system.

Background technique

LNG is the abbreviation of liquefied natural gas. In terms of importing, it helps the energy consuming countries to diversify their energy supply. In terms of exports, it helps natural gas producing countries to effectively develop natural gas resources. Increase foreign exchange earnings and promote the development of the national economy.

At present, China's coastal LNG projects are planned and implemented: Guangdong, Fujian, Zhejiang, Shanghai, Jiangsu, Shandong, Liaoning, Ningxia, Hebei Tangshan, etc., eventually forming a coastal LNG receiving station and pipeline network.

The existing conventional long-distance transportation of LNG is carried out by the bulk ship from the gas field liquefaction plant to the coastal LNG receiving station, and then the tank truck is loaded by the loading station of the receiving station, and then transported to the end by the land tank truck. Round-trip operation in unit tanks.

The tank system of the LNG ship is usually divided into two types: self-supporting and film-type. Both types of hulls can transport a large amount of LNG at a time. However, when the natural gas on the LNG ship is transported to the tanker (the vehicle that transports LNG on land), because of the danger of liquefied natural gas, it is necessary to construct an LNG receiving station before it can be transported. In terms of the current scale of construction of China's LNG receiving stations, in the short term, it is impossible to realize a rapid and large amount of LNG gas transmission to users.

However, the current LNG ship is filled by connecting the filling line to the large LNG storage tank through the loading and unloading arm, and then filling the LNG, which is disclosed in the invention patent of the "CN103899915B". However, when there are many LNG tanks on the transport ship, the existing loading and unloading method cannot realize the synchronous and rapid filling of multiple LNG tanks.

Summary of the invention

It is an object of the present invention to provide a multi-LNG tank synchronous filling system that has the advantage of simultaneous simultaneous filling of multiple tanks.

The above technical object of the present invention is achieved by the following technical solution: a multi-LNG tank synchronous filling system, comprising a main pipe, a branch pipe and an LNG tank, wherein the main pipe is connected with a liquid inlet end and a return gas end, The main pipe is connected to one end of the plurality of branch pipes, and the other end of each of the branch pipes is a filling end, and each filling end has an LNG tank in the same plane, and each of the LNG tanks is provided with a receiving end An automatic docking device is disposed between the filling end and the receiving end.

By adopting the above technical solution, the automatic docking device realizes the communication between the filling end and the receiving end, transmits the low-pressure LNG in the main pipe to each branch pipe, and then realizes the filling end of the branch pipe and the LNG tank box by the automatic docking device. The docking communication between the two can realize the simultaneous filling of a plurality of tanks through the main pipe, and meet the requirements for filling a plurality of tanks on the ship.

Preferably, the branch tube is a high vacuum multilayer insulated cryogenic liquid delivery hose.

By adopting the above technical solution, since the high vacuum multi-layer adiabatic cryogenic liquid delivery hose has a flexible structure and a small bending radius, the position of the liquid supply system can be adjusted according to the site conditions. At the same time, the high-vacuum multi-layer adiabatic cryogenic liquid delivery hose has a good cold-keeping effect, so under the condition of low-temperature transportation of LNG liquid, the hose surface does not have water and does not frost.

Advantageously, said branch tube comprises a foldable filler tube and a collapsible return air tube; said automatic docking device comprising a moving mechanism that drives the filler tube and the return air tube to extend in space and freely with the filling end Docking connection.

By adopting the above technical solution, the automatic docking device causes the branch pipe to move and extend in the space. Since the low pressure LNG can only maintain the liquid state below minus 100 degrees, the filling pipe and the return air pipe are set in a foldable manner, and in the docking process. In the middle, the filling pipe and the returning air pipe are extended by extension; at the same time, the moving mechanism can also adopt a robot.

Preferably, the end of the return air pipe that is butted against the manifold is coaxially nested with a bellows expansion joint.

By adopting the above technical solution, when the high-vacuum multi-layer adiabatic cryogenic liquid delivery hose is changed in size due to thermal expansion and contraction or pressure instability during liquid inlet, the bellows expansion joint can absorb such dimensional change and avoid the hose. Cracking occurs due to excessive dimensional changes.

Preferably, the frame structure is fixedly coupled with an insulated fixing seat for fixing the branch pipe.

By adopting the above technical solution, since the high vacuum multi-layer adiabatic cryogenic liquid delivery hose is a flexible structure, when the liquid is filled therein or the load on the hose is too large, the length direction of the hose is liable to collapse, due to the inside of the hose. It is a low-temperature LNG liquid, so when the hose collapses onto the frame structure, the temperature is transmitted to the frame structure, causing the frame structure and other structures connected to the frame structure to fail at low temperature, so that the heat-insulating mount can be set up. To the fixing, support and limit of high vacuum multi-layer adiabatic cryogenic liquid delivery hose.

Preferably, the automatic docking device further includes a first fixing plate and a second fixing plate, and the receiving end comprises a first fixing plate a female filler joint, the female filler joint is in communication with the LNG tank, and the second fixed plate is provided with a male filler joint corresponding to the female filler joint, and the male filler joint and the filler pipe respectively And communicating with the return air pipe, the moving mechanism drives the communication and disconnection of the male filler joint and the female filler joint by linear reciprocating motion.

By adopting the above technical solution, the second fixing plate and the first fixing plate serve to fix the male filling joint and the female filling joint to ensure the stability and structural strength during the docking; at the same time, there are two male joints, respectively It is connected with the filling pipe and the return air pipe, that is, in the process of automatic docking, the connection of the male filler joint and the female filler joint ensures the sealing of the docking.

Preferably, the automatic docking device further comprises a guiding mechanism disposed on the second fixing plate, and a guiding locking mechanism is disposed between the first fixing plate and the second fixing plate.

By adopting the above technical solution, the guiding structure reduces the precision error in the pushing process of the linear motion mechanism; the guiding locking mechanism keeps the second fixing plate and the first fixing plate fixed after the automatic docking, avoiding the process of injecting the low pressure LNG, the second The fixing plate and the first fixing plate are separated.

Preferably, the guiding mechanism comprises a third fixing plate and a guiding column, the moving mechanism comprises a first oil cylinder fixed to the third fixing plate, the piston rod of the first oil cylinder is passed through the third fixing plate and The two fixing plates are connected, and one end of the guiding post is connected to the second fixing plate and passes through the third fixing plate.

By adopting the above technical solution, the guide post plays a guiding role in the process of pushing the first cylinder, improves the precision in the process of docking the second fixed plate and the first fixed plate, and avoids the male filler joint and the female filler joint. An impact occurred.

Preferably, the second fixing plate comprises a floating plate and a cylinder fixing block, the male filler joint is disposed on the floating plate, and the guiding column is disposed on the cylinder fixing block, between the floating plate and the cylinder fixing block A floating centering mechanism is provided.

By adopting the above technical solution, when the male filler joint and the female filler joint are docked, the lifting mechanism causes the male filler joint and the female filler joint to move relative to each other in the height direction, so that the docking precision is insufficient, and the long-term problem is long. After use, the male filler joint and the female filler joint are worn out; during the docking process, the floating centering mechanism can move the floating plate and the cylinder fixing block in the height direction, thereby improving the male filler joint and the female filler joint. Concentricity reduces wear and tear.

Preferably, the floating centering mechanism includes a through hole, a fixing portion and an elastic member; the through hole is disposed through the floating plate and the cylinder fixing block, and the fixing portion is disposed through the through hole, and both ends of the fixing portion in the longitudinal direction An end of the longitudinal direction of the fixing portion is respectively connected to the piston rod and the cylinder fixing block of the first cylinder, and the other end of the fixing portion is in contact with the floating plate, thereby restricting the fixing of the floating plate and the cylinder The blocks are moved in a horizontal direction; one end of the elastic member is connected to the floating plate, and the other end of the elastic member is connected to the cylinder fixing block; and the elastic member is used to make the floating plate after the floating plate receives the force in the height direction. And the cylinder fixing block moves in the height direction.

By adopting the above technical solution, when the male filler joint and the female filler joint are docked, the lifting mechanism may bring about the problem of insufficient docking precision, and after long-term use, the male filler joint and the female filler joint may be worn. In the docking process, after the floating plate and the cylinder fixing block are subjected to the force in the height direction, the elastic member is stretched or compressed, and the floating plate moves in the height direction, thereby changing the position of the female filler joint. The filler joint and the female filler joint are aligned in the height direction to reduce the friction between the two and reduce wear.

Advantageously, the guide locking mechanism comprises a second cylinder, a locking lever disposed on the second fixing plate, and a locking sleeve disposed on the first fixing plate, the locking lever mating with the locking sleeve, the locking lever a sliding chamber is disposed therein, and a sliding member is slidably connected in the sliding chamber, and the sliding chamber extends in a radial direction with a locking passage, and the locking passage is connected in a rolling manner with a locking bead, the inside of the locking sleeve The surface is provided with a locking groove that cooperates with the locking bead, one end of the sliding member is provided with a slope abutting the locking bead, the other end of the sliding member is connected with the second cylinder; the second cylinder pushes the sliding member to slide, The beveled push bead protrudes from the outer surface of the locking lever and engages the locking bead in the locking groove.

By adopting the above technical solution, the first cylinder pushes the floating plate toward the first fixed plate. During the pushing process, the male filler joint and the female filler joint are in abutting communication, the locking rod enters the locking sleeve, and then the second cylinder pushes the sliding member. Moving in the sliding cavity, the locking beads are embedded in the locking groove to prevent the floating plate from being separated from the first fixing plate.

Preferably, the main pipe is provided with a lifting mechanism, and the lifting mechanism comprises a lifting platform and a third oil cylinder for pushing and lowering the lifting platform, the main pipe includes a first pipe disposed on two sides of the lifting platform, and the main pipe further includes a setting A second pipe on the lifting platform is connected between the first pipe and the second pipe by a plurality of connecting pipes connected by a rotary joint.

By adopting the above technical solution, the LNG storage tank can be stacked in a plurality of layers in the height direction, thereby expanding the volume of the stored LNG; at the same time, by the lifting of the lifting platform, the automatic docking device is moved into the upper LNG tank to realize the height direction. Fill the LNG storage tank.

Preferably, the multi-LNG tank synchronous filling system is applicable to LNG carriers and LNG receiving stations.

By adopting the above technical solution, the multi-LNG tank synchronous filling system is installed on the LNG tank transport ship, and the gas field liquefaction plant directly injects LNG into the LNG tank of the LNG tank transport ship, which is dangerous in the container terminal. After the product area is unloaded, it can be transported directly by flatbed or railway.

A second object of the present invention is to utilize the above-described multi-LNG tank synchronous filling system to transport LNG, which has the advantage of reducing the cost of LNG logistics.

The above technical object of the present invention is achieved by the following technical solutions: a logistics method for transporting LNG,

The S1 and LNG tank transport vessels enter the LNG receiving station or the liquefaction plant terminal;

S2, the multi-tank synchronous filling of the LNG tank on the LNG tank transport ship;

S3. After the liquid injection is completed, the LNG tank transport ship leaves the LNG receiving station or the liquefied factory terminal and transports to the destination;

After the S4 and LNG tank transport vessels arrive at the destination, the LNG tanks are loaded and unloaded to complete the transportation.

By adopting the above technical solution, the LNG tank on the LNG tank transport ship can be directly filled from the LNG receiving station or the liquefaction plant terminal, and after reaching the destination, the LNG tank can be directly unloaded; The cost is as follows: the cost of constructing a special LNG tanker special transport ship is 198 million yuan, the annual turnover is 600,000 tons, three ships need to be built, and the turnover LNG low temperature tank is 700 × 500,000 = 350 million yuan. 30 transport flatbed trucks can meet the annual digestive demand from Russia's Shahalin gas field liquefaction plant to Jiangsu and Shandong provinces. Because there is no need to build a coastal receiving station, the total investment of only ships and LNG low temperature tanks and transport flatbeds is about 1 billion yuan, a year-on-year decrease of 2 billion yuan, and total input costs fell by 66.7%.

Preferably, the destinations of S3 and S4 are dangerous goods berths at the container terminal.

By adopting the above technical solution, the operator of the container terminal directly manages the LNG tank, improves the utilization rate of the container terminal, and avoids the operation staffing cost of 150 people at the LNG receiving station.

Preferably, the S4 includes S5a; S5a, the LNG tank carrier transports the LNG tank in the dangerous goods receiving area of the container terminal, and then transports through the container flatbed or railway.

Through the adoption of the above technical solutions, the gas field liquefaction plant is loaded, the LNG tank transport ship is transported to the container port, and then transported to the end user by the flatbed truck; the Russian Shahlin gas field liquefaction plant is connected to the coastal container terminal of Jiangsu and Shandong provinces. For example, the freight is about 500 yuan / T + container port loading and unloading cost 100 yuan / T + flat car short-haul to the end user (100KM × 0.4 yuan / T) to complete the entire logistics process 640 yuan / T, with the existing technology Compared with the transportation cost of 950 yuan / T, only the transportation cost decreased by 32.6%.

Preferably, the destinations of S3 and S4 are inland river LNG receiving stations.

By adopting the above technical solution, the LNG tank transport ship can enter the LNG receiving station of the inland river through the Yangtze River and the canal, and transport the LNG tank through the inland developed water system, thereby saving transportation costs.

Preferably, the S4 includes S5b; S5b, the LNG tank carrier transports the LNG in the LNG tank to the tank of the LNG receiving station of the inland river through the fluid handling equipment.

By adopting the above technical solution, the LNG in the tank of the LNG receiving station of the inland river is supplemented.

Preferably, the process can also transport petroleum or ethylene or LPG.

By adopting the above technical solution, the transportation mode is not only applicable to LPG, but also suitable for transportation of other chemical liquid substances.

Preferably, the S4 includes S6; the S6. LNG tank is fed back through the detection module and the wireless module to the liquid level in the LNG tank.

By adopting the above technical solution, the logistics personnel are helped to monitor the liquid level inside the LNG tank to collect the user's LNG use rate; and also to monitor the internal condition of the LNG tank during the transportation of the entire LNG tank transport ship.

Preferably, the S6 includes S7; S7. When the liquid level in the feedback LNG tank is changed to be replaced, the LNG tank is recovered by the container flatbed or railway, and the recovered LNG tank is loaded into the LNG tank. The box is transported inside the ship.

By adopting the above technical solution, before the end of the liquid in the LNG tank, the LNG tank is replaced, the filled LNG tank is delivered to the user, and then the empty LNG tank is transported back to the LNG tank transport vessel. Carry out the next filling; realize the recycling of LNG tanks and reduce logistics costs.

It is an object of the present invention to provide a low temperature quick connector that has the advantage of avoiding icing.

In order to achieve the above technical object, the present invention provides the following technical solution: a filling low temperature quick joint, including a male filler joint and a female filler joint, the male filler joint including a cylindrical guide column and a first sealing mechanism for closing the flow guiding column, the female filling joint comprising a conveying column for inserting and inserting the guiding column and a second sealing mechanism for closing the conveying column, the length of the conveying column being along the length thereof a first vacuum chamber is disposed in the direction, and a second vacuum chamber is disposed in the guide column along the length direction thereof, and the first vacuum chamber, the second vacuum chamber, the flow guide column and the width of the transport column are concentric circle.

By adopting the above technical solution, when the first sealing mechanism closes the flow guiding column, the first vacuum chamber surrounding the guiding column can avoid heat exchange between the outside and the inside of the guiding column, and the second vacuum chamber can avoid the outside and the flow. The inside of the column is heat exchanged. When the male filler joint and the female filler joint are butted, the joint between the flow guide column and the heat transfer column will begin to overlap, and the docking point will be in the first vacuum chamber and the second vacuum chamber. In the middle, the butt joint is double-isolated by the first vacuum chamber and the second vacuum chamber to avoid ice formation outside the transport column, and the beneficial effect of improving the sealing property is obtained.

Preferably, the first sealing mechanism comprises a first limiting rod located in the guiding column and a first limiting barrel guiding the first limiting rod to slide along the length of the guiding column, the first limiting barrel The first limiting rod is fixedly connected to the guiding rod, the first limiting rod has one end passing through the first limiting barrel, and the other end of the first limiting rod is fixedly disposed with a first sealing head, the guiding a first limiting ring for closing the first sealing head is disposed in the flow column, and a first limiting spring sleeved on the first limiting rod is disposed between the first limiting cylinder and the first sealing head;

The second sealing mechanism includes a second limiting rod located in the conveying column and a second limiting barrel guiding the second limiting rod to slide along the length of the conveying column, and the other end of the second limiting rod a second sealing head is provided with a guiding flow column, and a second limiting ring is arranged on the second limiting cylinder to cooperate with the second sealing head to seal the conveying column, and the conveying column is fixedly provided for the first The second limiting cylinder is fitted with the sliding guiding cylinder, and the second limiting cylinder and the guiding cylinder are disposed with a second limiting spring disposed on the second limiting cylinder and the guiding cylinder, the second limiting rod One end of the second fixing ring is fixedly connected to the guiding cylinder, and the first fixing ring and the second fixing ring are provided with through holes.

By adopting the above technical solution, when the male filler joint and the female filler joint are separated, the first limit ring will be fitted to the first seal head under the push of the first limit spring, thereby closing the guide column, and secondly The seal head will be closed by the first limit ring. When the two are docked, the guide column is fitted into the transport column, and the second limit tube is pushed inward by the guide rod. Because the second limit rod and the guide tube are fixedly connected, the second limit The rod is fixed relative to the transport column, and the second seal head is disengaged from the second limit ring. At this time, the first seal head is moved inward relative to the guide rod by the second seal head, thereby The first sealing head and the first limiting ring are separated, and the inside of the guiding column and the conveying column are communicated at this time, which ensures that the two are always in a sealed state when the two are connected, and the beneficial effect of improving the sealing property is obtained. After the diversion column is pulled out, the first sealing head and the second sealing head are reset by the first limiting spring and the second limiting spring, so that the guiding column and the conveying column are automatically redistributed and sealed. A complementary benefit that improves the ease of operation.

Preferably, the shape of the first sealing head and the second sealing head is a truncated cone, the area of the side of the first sealing head contacting the first limiting rod is larger than the area of the other side, the second sealing The area of the side where the head is in contact with the second limiting rod is smaller than the area of the other side.

By adopting the above technical solution, the contact surface between the first sealing head and the first limiting ring is sloped, which increases the length of the gap between the first sealing head and the first limiting ring, and the second sealing head and The second limit ring also increases the length of the slit, and the beneficial effect of enhancing the sealing property is obtained.

Preferably, the outer diameter of the second limiting ring is the same as the inner diameter of the flow guiding column, and the length of the second limiting ring is smaller than the distance of the first limiting ring to the top end of the guiding column.

By adopting the above technical solution, when the flow guiding column is inserted into the conveying column, the first sealing head gradually approaches the second sealing head, and the guiding column is inserted into the conveying column, and the guiding column and the conveying column are formed at this time. Relatively sealed, when the second sealing head pushes the first sealing head, there is no possibility of leakage of LNG, and the beneficial effect of enhancing the sealing property is obtained.

Preferably, the first limiting ring, the first sealing head and the second sealing head are respectively recessed with a sealing groove, and a sealing ring made of an elastic material is disposed in the sealing groove.

By adopting the above technical solution, when the first sealing head is attached to the first limiting ring, the sealing ring between the two is deformed after being pressed, and the sealing ring is filled between the first sealing head and the first limiting ring. The gap between the second sealing head and the second limiting ring can also fill the gap. After the guiding rod is inserted into the conveying column, the sealing ring outside the first limiting ring also fills the first limiting ring and the guiding ring. The gap between the flow columns achieves the beneficial effect of enhancing the sealing property.

Preferably, the end of the second limiting cylinder is sleeved with a U-shaped ring that slides on the inner side wall of the guiding cylinder.

By adopting the above technical solution, since the second limiting cylinder slides relative to the conveying column, the U-shaped ring can ensure that the second limiting cylinder in motion is also closed with the conveying column, and the beneficial effect of enhancing the sealing performance is obtained. .

Preferably, the flow guiding column and the conveying column are respectively provided with a pumping structure, the end of the guiding column is concentrically provided with a positioning ring, and the positioning ring is provided with a suction hole communicating with the first vacuum chamber, A check valve is provided in the suction hole.

By adopting the above technical solution, after the first vacuum chamber and the second vacuum chamber are processed and formed, it is necessary to evacuate the gas therein, and at this time, the air suction hole can be connected by the air suction device, the gas therein is exhausted, and the air is pumped. After the device is pulled out, the one-way valve can ensure that the first vacuum chamber and the second vacuum chamber are in a sealed state, and the beneficial effect of enhancing the structural sealing property is obtained.

Preferably, the air suction structure is provided with a connecting ring that fits on the air guiding column, and the connecting ring is provided with a positioning groove for the positioning ring to slide and slide.

By adopting the above technical solution, after the first vacuum chamber and the second vacuum chamber are evacuated, the connecting ring can be sleeved on the positioning ring, so that the positioning ring fits into the positioning groove, and the connecting ring and other devices are passed at this time. By bolting, the male filler joint can be connected to other equipment, which has the beneficial effect of further enhancing the sealing performance.

In summary, the present invention has the following beneficial effects:

1. The automatic docking device realizes the communication between the filling end and the receiving end, that is, the synchronous filling of the plurality of tanks can be realized through the main pipe, and the requirements for filling the plurality of tanks on the ship are satisfied;

2. The gas field liquefaction plant is directly injected into the LNG tank of the LNG tank transport ship. The LNG tank transport ship can be transported directly through the flatbed or railway after being unloaded in the dangerous goods area of the container terminal;

3. The LNG ship does not load the large LNG storage tank, but the LNG tank is loaded. The LNG is injected into the LNG tank on the ship at the filling terminal of the LNG receiving station, and then the LNG tank is transported to the container terminal by the ship. Dangerous goods berths, when the LNG ship is transported to the terminal, the flat transport vehicle can directly transport the LNG tank to the user.

DRAWINGS

1 is a schematic view showing the positional relationship of a platform in Embodiment 1;

2 is a schematic view showing the positional relationship between the LNG storage tank and the automatic docking device in Embodiment 1;

3 is a schematic structural view of an LNG storage tank in Embodiment 1;

Figure 4 is an enlarged schematic view of the portion A shown in Figure 3;

Figure 5 is a schematic structural view of an automatic docking device in Embodiment 1;

Figure 6 is a schematic cross-sectional view of the automatic docking device in the first embodiment;

Figure 7 is a cross-sectional view showing the lock lever and the locking sleeve of the first embodiment;

8 is a schematic structural view of a second fixing plate in Embodiment 1;

9 is a schematic structural view of a lifting platform in Embodiment 1;

Figure 10 is an enlarged schematic view of a portion B shown in Figure 9;

Figure 11 is a plan view of the deck of Embodiment 3;

Figure 12 is a cross-sectional view showing the specific structure of the male filler joint in the fourth embodiment;

Figure 13 is a cross-sectional view showing the specific structure of the female filler joint in the fourth embodiment;

Figure 14 is a cross-sectional view showing the cooperation relationship between the female filler joint and the male filler joint in the fourth embodiment.

Fig. 15 is a schematic view showing a specific structure of a branch pipe in the second embodiment.

Figure 16 is a schematic view showing the position of the bellows expansion joint in the second embodiment.

In the figure, 1, platform; 11, LNG tank; 12, storage module; 13, tank; 14, frame structure; 141, insulation fixture; 142, support rib; 143, support plate; ; 16, the first fixed plate; 17, the mother filler joint; 18, electromagnetic control valve; 19, the second fixed plate; 2, the main pipe; 21, rotating joint; 22, low pressure LNG pipe; 23, nitrogen pipe; Instrument air tube; 26, torch tube; 3, automatic docking device; 31, floating plate; 32, male filler joint; 33, filling pipe; 331, bellows expansion joint; 34, return air pipe; 35, cylinder fixed block; 36, third fixed plate; 37, first cylinder; 38, aviation joint; 39, aviation socket; 4, guide column; 41, floating centering mechanism; 42, through hole; 43, fixed portion; 44, elastic member; 45, first rotating block; 46, second rotating block; 5, lifting module; 51, first pipe; 52, second pipe; 53, connecting pipe; 54, lifting platform; 55, third cylinder; Locking mechanism; 61, locking lever; 62, locking sleeve; 63, sliding chamber; 64, second cylinder; 65, sliding member; 66, locking passage; 67, lock Fixed bead; 68, bevel; 69, locking groove; 7, deck; 71, valve core; 72, spring; 73, filter hole; 74, vacuum insulation cavity; 81, male filler joint; 811, guide column 812, the first vacuum chamber; 813, suction hole; 814, check valve; 815, connecting ring; 816, positioning groove; 817, positioning ring; 82, female filler joint; 821, transport column; 822, second vacuum chamber; Sealing mechanism; 831, first limiting rod; 832, first limiting cylinder; 833, first fixing ring; 834, first sealing head; 835, first limiting ring; 836, first limiting spring; a second sealing mechanism; 841, a second limiting rod; 842, a second limiting cylinder; 843, a second sealing head; 844, a second limiting ring; 845, a guiding cylinder; 846, a second limiting spring; 847, through hole; 848, second fixed ring; 851, sealing groove; 852, sealing ring; 853, U-ring.

Detailed ways

The invention will be further described in detail below with reference to the accompanying drawings.

The present invention is only an explanation of the present invention, and is not intended to limit the present invention. Those skilled in the art can make modifications without innovating the present embodiment as needed after reading the present specification, but as long as the present invention is in the right of the present invention. All requirements are protected by patent law.

Embodiment 1: As shown in FIG. 1 and FIG. 2, a multi-LNG tank 11 synchronous filling system includes a plurality of LNG tanks 11 (FIG. 1 is a plan view), and the object of the present invention is to realize a plurality of LNG tanks. The box 11 is flushed.

As shown in FIG. 1 and FIG. 2, the storage module 12 of the LNG tank 11 includes a platform 1 disposed on a plane, and the LNG tanks 11 on the platform 1 are disposed opposite to each other, and the LNG tanks 11 are juxtaposed along the width direction thereof. There are a plurality of (the LNG tank 11 which is arranged side by side for hiding in FIG. 2); in the height direction, the LNG tank 11 is placed in two layers; in the length direction of the platform 1, the LNG storage tank can also be set. There are many groups.

As shown in FIG. 2, the system includes a main pipe 2 for conveying LNG and conveying return gas, an automatic docking device 3 for automatically connecting the main pipe 2 with the LNG tank 11 in the storage module 12; and an LNG tank in the storage module 12 When the stack of the box 11 has a plurality of layers, the system further includes a lifting module 5 for realizing the lifting and lowering of the automatic docking device 3 and placing the code on the upper LNG tank 11 .

As shown in FIG. 3, the LNG tank 11 includes a frame structure 14 disposed outside and a tank body 13 disposed inside, and the tank body 13 is fixed by the frame structure 14; a receiving end 15 is disposed at one end of the LNG tank box 11 in the longitudinal direction. As shown in Figure 4, the receiving end 15 includes a first retaining plate 16 that is secured to the frame structure 14; the first securing plate 16 includes two female filler joints 17: a female filler joint 17 through the two conduits and the can 13 Connected, the two pipes respectively have the effect of normally filling LNG and pre-filling LNG (ie, pre-cooling before filling of the can body 13); another female filling joint 17 is connected to the can body 13 through a pipe. When the LNG is filled, the gas in the tank 13 is discharged; each of the pipes is provided with an electromagnetic control valve 18 to control the opening and closing of the pipe.

As shown in FIG. 5, the automatic docking device 3 includes a floating plate 31. The floating plate 31 is provided with a male filler joint 32, and the male filler joint 32 can be coupled with the female filler joint 17 on the first fixed plate 16 (in FIG. 4 The plug-in communication; the two male filler joints 32 are respectively connected with a foldable filler tube 33 and a foldable return air tube 34, and the filler tube 33 and the return air tube 34 are in communication with the manifold 2 of Fig. 2, respectively.

As shown in FIG. 6, the floating plate 31 is provided with a cylinder fixing block 35 and a third fixing plate 36 in this order, and the floating plate 31 is connected to the cylinder fixing block 35. The first fixing plate 36 is fixed with a first oil cylinder 37. After the piston rod of the first oil cylinder 37 passes through the third fixing plate 36, the driving cylinder fixing block 35 and the floating plate 31 are moved to the first fixing plate 16, so that the mother is added. The injection joint 17 is in communication with the above-described male filler joint 32.

As shown in FIG. 5, an aviation joint 38 and an aviation socket 39 are correspondingly arranged on the floating plate 31 and the first fixed plate 16, and when the first cylinder 37 pushes the floating plate 31 to move toward the first fixed plate 16, the aviation joint 38 and The air outlet 39 is docked to control the solenoid control valve 18.

As shown in FIG. 8, four guide posts 4 are disposed between the third fixed plate 36 and the cylinder fixing block 35. One end of the guide post 4 is fixed to the cylinder fixing block 35, and the guide post 4 is passed through the third fixing plate. 36. When the first cylinder 37 pushes the floating plate 31 to move, the guide post 4 cooperates with the third fixing plate 36 to play a guiding role.

As shown in FIG. 5, in the process in which the first cylinder 37 urges the floating plate 31 to move relative to or away from the first fixed plate 16, the male filler joint 32 and the female filler joint 17 are butted. In order to reduce the wear of the male filler joint 32 and the female filler joint 17, the concentricity is insufficient. As shown in FIG. 6, a floating centering mechanism 41 is provided between the floating plate 31 and the cylinder block 35.

The structure of the floating centering mechanism 41 is:

As shown in FIG. 6 , the floating centering mechanism 41 includes a through hole 42 penetrating through the floating plate 31 . The through hole 42 is provided with a fixing portion 43 . The fixing portion 43 passes through the through hole 42 , and both ends of the fixing portion 43 in the longitudinal direction are provided. The radial extension of the through hole 42 is such that both ends of the fixing portion 43 in the longitudinal direction protrude radially from the through hole 42 to function to sandwich the floating plate 31 and the cylinder fixing block 35, and the fixing portion 43 restricts the floating plate 31 and the cylinder The movement of the fixing block 35 in the horizontal direction; the fixing portion 43 is coupled to the piston rod of the first cylinder 37, thereby transmitting the thrust and the pulling force to the floating plate 31 and the cylinder fixing block 35.

As shown in FIG. 8, in the height direction, the four corners of the inner side of the floating plate 31 are provided with elastic members 44, and the elastic members 44 are springs, and one end of each spring is connected to the floating plate 31 through the first rotating block 45, each The other end of the spring is coupled to the cylinder block 35 via a second rotating block 46. Further, after the floating plate 31 and the cylinder fixing block 35 are subjected to the force in the height direction (the force of the concentricity is insufficient when the male filler joint 32 is mated with the female filler joint 17), the elastic member 44 is stretched or compressed. The male filler joint 32 and the female filler joint 17 are aligned in the height direction.

As shown in FIG. 5, in order to ensure that the first fixing plate 16 and the floating plate 31 are in a locked state when being docked, a guiding locking mechanism 6 is disposed between the floating plate 31 and the first fixing plate 16.

As shown in FIG. 5, the guide locking mechanism 6 includes a locking lever 61 disposed on the floating plate 31 and a locking sleeve 62 disposed on the first fixing plate 16, when the first cylinder 37 pushes the floating plate 31 toward the first fixing plate When the movement of the 16 is moved, the locking lever 61 is moved into the locking sleeve 62 to serve as a guiding and positioning function; as shown in FIG. 6, the locking lever 61 is provided with a sliding chamber 63, and the floating plate 31 is disposed on the back surface of the locking lever 61. The second cylinder 64, the piston rod of the second cylinder 64 is connected with a sliding member 65, and the sliding member 65 is slidably coupled in the sliding chamber 63; as shown in FIG. 7, the locking rod 61 is provided with a locking passage 66 at the end thereof. The locking passage 66 is in communication with the sliding chamber 63. The locking passage 66 is slidably coupled with the locking bead 67. The end of the sliding member 65 is provided with a slope 68 which is moved toward the locking bead 67 when the slider 65 is driven by the second cylinder 64. The locking bead 67 is ejected from the portion of the locking passage 66 by the slope 68 of the slider 65 (i.e., the locking bead 67 protrudes from the outer surface of the locking stem), and then the locking bead 67 is fitted into the locking groove 69 of the locking sleeve 62 to prevent the locking lever 61 is disengaged from the locking sleeve 62.

As shown in FIG. 5, the materials of the foldable filling pipe 33 and the foldable return air pipe 34 are pipes dedicated for transporting low-temperature LNG liquid; since the filling pipe 33 and the return air pipe 34 are connected by a plurality of pipes, The folding of the injection pipe 33 and the return air pipe 34 is achieved by providing a rotary joint 21 between adjacent pipes, and the rotary joint 21 not only realizes the rotation between the pipe and the pipe, but also the communication between the adjacent pipes can also be rotated. The joint 21 is realized. When the second cylinder 64 pushes the floating plate 31 to move toward the first fixed plate 16, the filling pipe 33 and the return air pipe 34 in the folded state can be extended to achieve the filling of the LNG tank 11; when the second cylinder 64 will When the floating plate 31 is retracted, the filling tube 33 and the returning air tube 34 are folded.

As shown in FIG. 10, the manifold 2 is functionally classified, and includes at least five, which are a low pressure LNG pipe 22, a nitrogen pipe 23, an instrument air pipe 24, a return air pipe 34, and a flare pipe 26. The nitrogen tube 23 functions to replace the LNG in the manifold 2 and the LNG tank 11; the torch tube 26 is followed by a torch to burn the residual LNG in the manifold 2 (LNG can also be directly emptied on the sea surface) The low pressure LNG pipe 22 is connected to the filling pipe 33 to function to fill the LNG tank 11 with LNG. The other end of the low pressure LNG pipe 22 is the liquid inlet end, and the liquid inlet end is the position for supplying the low pressure LNG; 34 is connected to the return gas end, and the gas end is the pipe opening for discharging the gas. During the filling process, the gas in the LNG tank 11 is discharged; the meter air pipe 24 injects gas into the valve controlled by the air pressure.

As shown in FIG. 9, in order to realize the lifting action of the lifting module 5, the manifold 2 is divided into a second duct 52 disposed on the lifting platform 54 and a first duct 51 disposed on both sides of the lifting platform 54, a first duct 51 and The second duct 52 is connected by a connecting pipe 53; the first duct 51 and the second duct 52 each include the low pressure LNG pipe 22, the nitrogen pipe 23, the instrument air pipe 24, the return air pipe 34, and the flare pipe 26 in FIG. That is, the filling pipe 33 and the return air pipe 34 on the above-described automatic docking device 3 are connected to the second pipe 52.

As shown in FIG. 10, the connecting pipe 53 includes a plurality of connecting pipes 53. In the first embodiment, the connecting pipe 53 is four, and the connecting pipe 53 at the head end communicates with a pipe in the first pipe 51, and the connecting pipe at the tail end. 53 is in communication with a corresponding one of the tubes in the second duct 52, and the adjacent connecting tubes 53 are rotatably connected and communicated by the rotary joint 21. When the lifting platform 54 is raised, the plurality of connecting pipes 53 are extended, and when the lifting platform 54 is lowered, the plurality of connecting pipes 53 are folded to each other.

As shown in FIG. 9, the lifting platform 54 is lifted and lowered by the third cylinder 55. In the first embodiment, the third cylinder 55 is provided with three, and the bottom of the third cylinder 55 may be disposed below the platform 1 or above the platform 1, and the third cylinder 55 is provided. The piston rod is connected to the bottom of the lifting platform 54; the automatic docking device 3 is disposed on one side or opposite sides of the lifting platform 54, and the automatic docking device 3 is distributed along the length direction of the second duct 52, one side The LNG tank 11 or the LNG tanks 11 on both sides are filled.

The working process of Embodiment 1 is that the lifting platform 54 is raised or lowered to the position of the platform 1 until the male filler joint 32 is aligned with the female filler joint 17, and during the lifting process, the connecting pipe 53 is folded; then the first cylinder 37 is then The floating plate 31 is pushed toward the first fixing plate 16, and during the pushing process, the male filler joint 32 is in abutting communication with the female filler joint 17, the locking lever 61 enters the locking sleeve 62, and then the second cylinder 64 pushes the sliding member 65. Moving, the locking bead 67 is embedded in the locking groove 69 to prevent the floating plate 31 from being detached from the first fixing plate 16; in the process of the male fitting joint 32 being mated with the female filling joint 17, floating under the action of the elastic member 44 The plate 31 and the cylinder fixing block 35 move in the height direction, Avoid the impact between the male filler joint 32 and the female filler joint 17; the electromagnetic control valve 18 is opened, and after the LNG tank 11 is pre-cooled, the filling pipe 33 injects the low-pressure LNG into the LNG tank 11 and returns to the gas pipe 34 to be synchronized. The gas in the LNG tank 11 is discharged. After the filling of the LNG tank 11 in the same horizontal plane, the solenoid valve controls the LNG tank, the filling pipe 33 and the return air pipe 34 to be closed, and the second cylinder 64 and the first cylinder 37 are successively withdrawn. Then, the lifting platform 54 is moved upward, and the above steps are repeated to realize filling of the plurality of LNG tanks 11.

Embodiment 2: Embodiment 2 differs from Embodiment 1 in the material of the branch pipe and the connection form between the branch pipe and the main pipe and the frame structure.

As shown in Fig. 15, the branch pipe includes a filler pipe 33 and a return air pipe 34, and both the filler pipe 33 and the return air pipe 34 are made of a high vacuum multi-layer adiabatic cryogenic liquid delivery hose (abbreviated as a vacuum hose). The vacuum hose is divided into inner and outer layers, the inner and outer layers are metal hoses made of high quality 304 stainless steel, and the interlayer between the inner and outer layers is made of advanced heat insulating material, so the surface of the vacuum hose is not easy to be watered and knotted. The cream can work in a minimum of 270 ° C environment. In summary, the vacuum hose is fully capable of meeting the demand for conveying LNG liquid.

At the same time, the vacuum hose is of a flexible structure, and in a state where no filling is required, that is, in a general state (refer to FIG. 15), the filling pipe 33 and the returning air pipe 34 are in a bent state, and when the floating plate 31 drives the male filler joint When the parenting valve 17 is in the centering motion, that is, the working state, the filling pipe 33 and the returning air pipe 34 can automatically cancel the bending state and follow the movement of the floating plate 31, and the filling pipe 33 and the returning are completed when the filling is completed. The air tube 34 can be simultaneously folded in accordance with the movement of the floating plate 31, so that the entire filling operation can be completed smoothly.

As shown in FIG. 16, the end of the return air tube 34 connected to the manifold 2 is coaxially nested with a bellows expansion joint 331 for absorbing the dimensional change caused by the expansion, contraction, etc. of the pipeline, the conduit or the container. A device in which the bellows is the primary compensating element. The bellows expansion joint 331 is capable of absorbing such dimensional changes when the vacuum hose is subjected to thermal expansion and contraction or when the pressure is unstable due to pressure instability, and the hose is prevented from being cracked due to excessive dimensional change.

As shown in FIG. 15, the frame structure 14 is fixed with a plurality of heat insulating fixing seats 141 along the bottom edge of the main pipe 2, and the heat insulating fixing seat 141 is coaxially wrapped around the outer wall of the return air pipe 34 to serve as a return air pipe. The support and heat insulation function of 33 avoids the low temperature failure of the frame structure 14 and the structure connected thereto due to the temperature transfer to the frame structure 14 when the return air pipe 34 is collapsed due to excessive load, thereby improving safety.

As shown in FIG. 15, two ends of the bottom edge of the frame structure 14 near the bottom of the floating plate 31 are provided with two vertically upward supporting ribs 142. The upper ends of the two supporting edges 142 are fixedly connected with supports for arranging the heat insulating fixing base 141. Board 143. The two support plates 143 are fixedly connected to the heat insulating fixing base 141 whose axial direction coincides with the longitudinal direction of the bottom edge of the frame structure 14. Similarly, the heat-insulating mount 141 is also coaxially wrapped on the outer wall of the filler tube 33, and also serves to support and insulate the filler tube 34.

Working principle: The working principle of Embodiment 2 is the same as that of Embodiment 1.

Embodiment: 3: As shown in FIG. 11, an LNG carrier includes a deck 7 on which a multi-LNG tank synchronous filling system of Embodiment 1 is disposed, and an LNG storage module 12 is disposed on the deck 7. Upper, the body of the third cylinder 55 may be disposed below the deck 7, and the piston rod of the third cylinder 55 may be passed through the deck 7 to be coupled to the lifting platform 54 illustrated in FIG. 10 on the deck 7.

The working principle of Embodiment 3 is the same as that of Embodiment 1. The LNG receiving station or the liquefaction plant terminal injects low-pressure LNG into the main pipe 2 through the crane pipe to realize simultaneous filling of the plurality of LNG tanks 11 on the LNG tank transport ship. .

Embodiment 4: As shown in FIG. 12, a filling low temperature quick joint includes a male filler joint 81, and the male filler joint 81 includes a cylindrical guide rod 811 and a first for closing the guide rod 811. Sealing mechanism 83. The first sealing mechanism 83 includes a cylindrical first limiting rod 831 located in the guiding column 811 and a first limiting barrel 832 guiding the first limiting rod 831 to slide along the length of the guiding column 811, the first limit The position tube 832 is fixedly coupled to the flow guide post 811 by a disk-shaped first fixing ring 833.

As shown in FIG. 12, one end of the first limiting rod 831 passes through the first limiting cylinder 832, and the other end of the first limiting rod 831 is fixedly disposed with a first sealing head 834, and the guiding rod 811 is provided with a closed portion. The first sealing head 834 of the first sealing head 834 has a shape of a truncated cone. The area of the first sealing head 834 contacting the first limiting rod 831 is larger than the area of the other side. A first limiting spring 836 sleeved on the first limiting rod 831 is disposed between the first limiting cylinder 832 and the first sealing head 834, and is achieved by the cooperation of the first limiting ring 835 and the first sealing head 834. The purpose of sealing the guide column 811.

As shown in FIG. 13, the filling low temperature quick connector is provided with a female filler joint 82 that cooperates with the male filler joint 81, and the female filler joint 82 includes a cylindrical input for the flow guiding column 811 (refer to FIG. 14) to be fitted and inserted. A flow column 821 and a second sealing mechanism 84 for closing the transport column 821. The second sealing mechanism 84 includes a second limiting rod 841 located in the conveying column 821 and a second limiting barrel 842 guiding the second limiting rod 841 to slide along the longitudinal direction of the conveying column 821. The other end of the second limiting rod 841 is provided with a second sealing head 843 of the guiding flow column 811, and the second limiting barrel 842 is extended. The second limiting ring 844 is disposed with the second sealing head 843 sealing the conveying column 821. The first sealing head 834 and the second sealing head 843 are in the shape of a truncated cone, and the first sealing head 834 and the first limiting rod The area of one side of the contact of 831 is larger than the area of the other side, the area of the side of the second sealing head 843 contacting the second limiting rod 841 is smaller than the area of the other side, the first sealing head 834 and the first limiting ring The contact surface between the 835 is sloped, increasing the length of the gap between the first sealing head 834 and the first limiting ring 835.

As shown in FIG. 13 , a guide cylinder 845 is disposed in the transport column 821 for the second limit cylinder 842 to fit and slide, and the second limit cylinder 842 and the guide cylinder 845 are disposed between the second limit. The second limiting spring 846 is disposed on the sleeve 842 and the guiding cylinder 845. One end of the second limiting rod 841 is fixedly connected to the guiding cylinder 845 through the second fixing ring 848. The first fixing ring 833 and the second fixing ring 848 are disposed through the first fixing ring 833 and the second fixing ring 848. The through hole 847, the LNG enters the transport column 821 from the through hole 847.

As shown in FIG. 14, the outer diameter of the second limiting ring 844 is the same as the inner diameter of the guiding rod 811, and the length of the second limiting ring 844 is smaller than the distance of the first limiting ring 835 to the top end of the guiding rod 811. When the guide column 811 is inserted into the transport column 821, the guide column 811 and the transport column 821 form a relative seal at this time, and when the second seal head 843 pushes the first seal head 834, there is no possibility of LNG leakage. .

As shown in FIG. 14, the first limiting ring 835, the first sealing head 834 and the second sealing head 843 are respectively recessed and provided with a sealing groove 851, and a sealing ring 852 made of an elastic material is disposed in the sealing groove 851. . The sealing ring 852 is deformed after being pressed, and the sealing ring 852 fills the gap to enhance the sealing property. The end of the second limiting cylinder 842 is sleeved with a U-shaped ring 853 which slides on the inner side of the guiding guiding cylinder 845. Since the second limiting cylinder 842 slips relative to the conveying column 821, the U-shaped ring 853 can ensure the movement. The second limit barrel 842 is also closed as the transport column 821.

As shown in FIG. 14, a cylindrical first vacuum chamber 812 is disposed in the longitudinal direction of the transport column 821. The second vacuum chamber 822 is disposed in the guide rod 811 along the longitudinal direction thereof. The first vacuum chamber 812, The second vacuum chamber 822, the flow guide column 811 and the cross section of the transport column 821 in the width direction are concentric circles.

As shown in FIG. 12 and FIG. 13 , the air guiding column 811 and the power transmission column 821 are respectively provided with a pumping structure. The end of the air guiding column 811 is concentrically provided with a positioning ring 817. The positioning ring 817 is provided with a first vacuum chamber 812. The air vent 813 is provided with a check valve 814 in the air vent 813, and the gas is extracted from the air vent 813. The air suction structure is provided with a connecting ring 815 which is fitted on the air guiding column 811. The connecting ring 815 is provided with a positioning groove 816 for the positioning ring 817 to fit and slide. After the first vacuum chamber 812 and the second vacuum chamber 822 are evacuated, the connecting ring 815 can be placed on the positioning ring 817, so that the positioning ring 817 fits into the positioning slot 816, and the connecting ring 815 and other devices will be connected. The male filler connector 81 can be attached to other equipment by bolting.

Working process: when the two are docked, the guiding rod 811 is fitted into the conveying column 821, and the guiding rod 811 pushes the second limiting barrel 842 inwardly, due to the second limiting rod 841 and The guiding cylinder 845 is fixedly connected, and the second limiting rod 841 is fixed relative to the conveying column 821. At this time, the second sealing head 843 is disengaged from the second limiting ring 844, and the first sealing head 834 is at the second sealing head. Under the push of 843, the relative guide column 811 moves inward, so that the first sealing head 834 and the first limiting ring 835 are disengaged, and the inside of the guiding column 811 and the conveying column 821 are connected to ensure the two. When connected, it is always sealed.

After the guide rod 811 is pulled out, the first sealing head 834 and the second sealing head 843 are reset by the first limiting spring 836 and the second limiting spring 846, so that the guiding column 811 and the conveying column The 821 automatically redistributes the seal.

Example 5:

The S1 and LNG tank transport vessels enter the liquefaction plant terminal;

S3. After the liquid injection is completed, the LNG tank transport ship leaves the liquefied factory terminal and transports the dangerous goods berth to the container terminal;

S4, LNG tank transport ship arrives at the dangerous goods berth of the container terminal, loading and unloading the LNG tank to complete the transportation;

S5a, the LNG tank carrier transports the LNG tank in the dangerous goods receiving area of the container terminal, and then transports it to the user through the container flatbed.

During the use of the S6.LNG tank, the liquid level in the LNG tank is fed back through the detection module and the wireless module;

S7. When the liquid level in the feedback LNG tank is to be replaced, the LNG tank is recovered by the container flatbed or railway, and the recovered LNG tank is loaded into the LNG tank transport vessel.

Example 6

S1, LNG tank transport ship enters the LNG receiving station;

S3. After the liquid injection is completed, the LNG tank transport ship leaves the LNG receiving station and transports the dangerous goods berth to the container terminal;

S5a, the LNG tank transporter unloads the LNG tank in the dangerous goods receiving area of the container terminal and then transports it to the user by rail.

Example 7

S1, LNG tank transport ship enters the LNG receiving station;

Example 8

The S1 and LNG tank transport vessels enter the liquefaction plant terminal;

Example 9

The S1 and LNG tank transport vessels enter the liquefaction plant terminal;

S3. After the liquid injection is completed, the LNG tank transport ship leaves the liquefaction plant terminal and transports the LNG receiving station to the inland river;

The S4 and LNG tank transport vessels arrive at the LNG receiving station of the inland river, and the LNG tanks are loaded and unloaded to complete the transportation.

The S5b and LNG tank transport vessels transport the LNG in the LNG tank to the tank of the LNG receiving station of the inland river through the fluid handling equipment.

Example 10:

S1, LNG tank transport ship enters the LNG receiving station;

Claims

A multi-LNG tank synchronous filling system, comprising: a main pipe (2), a branch pipe and an LNG tank (11), wherein the main pipe (2) is connected with a liquid inlet end and a return gas end, and the main pipe ( 2) communicating with one end of the plurality of branch pipes, the other end of each of the branch pipes is a filling end, and each filling end has an LNG tank (11) in the same plane, and each of the LNG tanks ( 11) A receiving end (15) is disposed, and an automatic docking device (3) is disposed between the filling end and the receiving end (15).
The multi-LNG tank synchronous filling system according to claim 1, wherein the branch pipe is a high vacuum multi-layer adiabatic cryogenic liquid delivery hose.
The multi-LNG tank synchronous filling system according to claim 1, wherein said branch pipe comprises a foldable filling pipe (33) and a foldable return air pipe (34); said automatic docking device (3) A moving mechanism is provided that drives the filler tube (33) and the return air tube (34) to extend in space and freely interface with the filling end.
The multi-LNG tank synchronous filling system according to claim 3, wherein a corrugated expansion joint (331) is coaxially nested at one end of the return air pipe (34) that is butted against the manifold (2).
The multi-LNG tank synchronous filling system according to claim 1, characterized in that the frame structure (14) is fixedly connected with an insulation fixing seat (141) for fixing the branch pipe.
The multi-LNG tank synchronous filling system according to claim 3, wherein the automatic docking device (3) further comprises a first fixing plate (16) and a second fixing plate (19), the receiving end (15) comprising a female filler joint (17) disposed on the first fixed plate (16), the female filler joint (17) being in communication with the LNG tank (11), the second fixed plate (19) A male filler joint (32) corresponding to the female filler joint (17) is disposed, and the male filler joint (32) is in communication with the filler pipe (33) and the return air pipe (34), respectively. The communication and disconnection of the male filler connector (32) and the female filler connector (17) are driven by linear reciprocating motion.
The multi-LNG tank synchronous filling system according to claim 6, wherein the automatic docking device (3) further comprises a guiding mechanism disposed on the second fixing plate (19), the first fixing plate A guide locking mechanism (6) is provided between the (16) and the second fixing plate (19).
The multi-LNG tank synchronous filling system according to claim 7, wherein the guiding mechanism comprises a third fixing plate (36) and a guide post (4), and the moving mechanism comprises a third fixing plate ( 36) a fixed first cylinder (37), the piston rod of the first cylinder (37) is passed through a third fixing plate (36) and connected to a second fixing plate (19), the guiding column (4) One end is connected to the second fixing plate (19) and passed through the third fixing plate (36).
The multi-LNG tank synchronous filling system according to claim 8, wherein said second fixing plate (19) comprises a floating plate (31) and a cylinder fixing block (35), said male filler joint ( 32) disposed on the floating plate (31), the guide post (4) is disposed on the cylinder fixing block (35), and the floating centering mechanism is disposed between the floating plate (31) and the cylinder fixing block (35) (41).
The multi-LNG tank synchronous filling system according to claim 9, wherein the floating centering mechanism (41) comprises a through hole (42), a fixing portion (43) and an elastic member (44); The through hole (42) is disposed through the floating plate (31) and the cylinder fixing block (35), and the fixing portion (43) is disposed through the through hole (42), and both ends of the fixing portion (43) in the longitudinal direction are larger than the through hole (42) an aperture, one end of the fixing portion (43) in the longitudinal direction is respectively connected to a piston rod of the first cylinder (37) and a cylinder fixing block (35), and the other end of the fixing portion (43) in the longitudinal direction is The floating plate (31) abuts, thereby restricting the floating plate (31) from moving relative to the cylinder fixing block (35) in a horizontal direction; one end of the elastic member (44) is connected with the floating plate (31), the elastic member The other end of (44) is connected to the cylinder fixing block (35); after the floating plate (31) is subjected to the force in the height direction, the floating plate (31) and the cylinder fixing block (35) are placed at Move in the height direction.
The multi-LNG tank synchronous filling system according to claim 7, wherein said guide locking mechanism (6) comprises a second cylinder (64) and a locking lever disposed on the second fixing plate (19) ( 61) and a locking sleeve (62) disposed on the second fixing plate, the locking rod (61) is engaged with the locking sleeve (62), and the locking rod (61) is provided with a sliding chamber (63) a sliding member (65) is slidably coupled to the sliding chamber (63), and the sliding chamber (63) extends in a radial direction with a locking passage (66), and the locking passage (66) has a locking connection in the rolling connection a bead (67), an inner surface of the locking sleeve (62) is provided with a locking groove (69) that cooperates with a locking bead (67), and one end of the sliding member (65) is provided with a locking bead (67) a bevel (68), the other end of the sliding member (65) is coupled to the second cylinder (64); the second cylinder (64) pushes the sliding member (65) to slide, and the inclined surface (68) pushes the locking bead (67) protrudes from the outer surface of the lock lever (61) and engages the locking bead (67) in the locking groove (69).
The multi-LNG tank synchronous filling system according to claim 3, characterized in that: the main pipe (2) is provided with a lifting mechanism, and the lifting mechanism comprises a lifting platform (54) and a lifting platform (54) a third cylinder (55), the manifold (2) comprising a first conduit (51) disposed on either side of the lifting platform (54), the manifold (2) further comprising a first portion disposed on the lifting platform (54) The second pipe (52) is connected between the first pipe (51) and the second pipe (52) by a plurality of connecting pipes (53) connected by a rotating joint (21).
The multiple LNG tank synchronous filling system according to claim 3, wherein said multi-LNG tank synchronous filling system is applicable to an LNG carrier and an LNG receiving station.
A logistics method for transporting LNG, characterized in that:

The S1 and LNG tank transport vessels enter the LNG receiving station or the liquefaction plant terminal;

S2, the multi-tank synchronous filling of the LNG tank on the LNG tank transport ship;

S3. After the liquid injection is completed, the LNG tank transport ship leaves the LNG receiving station or the liquefied factory terminal and transports to the destination;

After the S4 and LNG tank transport vessels arrive at the destination, the LNG tanks are loaded and unloaded to complete the transportation.
The method of transporting LNG according to claim 14, wherein the destinations of said S3 and S4 are dangerous goods berths of a container terminal.
The method for transporting LNG according to claim 14, wherein said S4 comprises S5a;

S5a, the LNG tank carrier transports the LNG tank in the dangerous goods receiving area of the container terminal, and then transports it through the container flatbed or railway.
A method of transporting LNG according to claim 14, wherein said destinations of S3 and S4 are inland river LNG receiving stations.
The method for transporting LNG according to claim 17, wherein said S4 is followed by S5b;

S5b, the LNG tank carrier transports the LNG in the LNG tank to the tank of the LNG receiving station of the inland river through the fluid handling equipment.
A method of transporting LNG according to claim 14 wherein the process is also capable of transporting petroleum or ethylene or LPG.
The method for transporting LNG according to claim 14, wherein said S4 comprises S6;

During the use of the S6.LNG tank, the liquid level in the LNG tank is fed back through the detection module and the wireless module;
The method for transporting LNG according to claim 20, wherein said S6 comprises S7;

S7. When the liquid level in the feedback LNG tank is to be replaced, the LNG tank is recovered by the container flatbed or railway, and the recovered LNG tank is loaded into the LNG tank transport vessel.
A filling low temperature quick connector, comprising a male filler joint (81) and a female filler joint (82), characterized in that: the male filler joint (81) comprises a cylindrical guide column (811) and a first sealing mechanism (83) for closing the flow guiding column (811), the female filling joint (82) including a conveying column (821) for guiding the insertion of the guiding column (811) and for closing the transmission a second sealing mechanism (84) of the flow column (821), the first vacuum chamber (812) is disposed in the longitudinal direction of the transport column (821), and the inner diameter of the flow guide column (811) is along its length A second vacuum chamber (822) is disposed, and the first vacuum chamber (812), the second vacuum chamber (822), the flow guide column (811) and the transport column (821) are concentric in cross section in the width direction.
The filling low temperature quick connector according to claim 22, wherein said first sealing mechanism (83) comprises a first limiting rod (831) located in the flow guiding column (811) and guiding the first limit a rod (831) is a first limiting cylinder (832) that slides along the length of the guiding column (811), and the first limiting cylinder (832) passes through the first fixing ring (833) and the guiding column (811) Fixedly connected, one end of the first limiting rod (831) passes through the first limiting cylinder (832), and the other end of the first limiting rod (831) is fixedly disposed with a first sealing head (834), A first limiting ring (835) for closing the first sealing head (834) is disposed in the guiding column (811), between the first limiting cylinder (832) and the first sealing head (834) a first limit spring (836) disposed on the first limit rod (831);

The second sealing mechanism (84) includes a second limiting rod (841) located in the conveying column (821) and a second guiding rod (841) sliding along the length of the conveying column (821) a second limiting cylinder (842), the other end of the second limiting rod (841) is provided with a second sealing head (843) of the guiding flow column (811), and the second limiting cylinder (842) A second limiting ring (844) is disposed extending to the second sealing head (843) to seal the conveying column (821), and the second limiting tube (842) is fixedly disposed in the conveying column (821). The sliding guide cylinder (845) is disposed between the second limiting cylinder (842) and the guiding cylinder (845) and is disposed on the second limiting cylinder (842) and the guiding cylinder (845). a position spring (846), one end of the second limiting rod (841) is fixedly connected to the guiding cylinder (845) through a second fixing ring (848), the first fixing ring (833) and the second fixing ring ( A through hole (847) is provided through the 848).
The filling low temperature quick connector according to claim 23, wherein said first sealing head (834) and said second sealing head (843) are in the shape of a truncated cone, said first sealing head (834) and The area of the side where the first limiting rod (831) contacts is larger than the area of the other side, and the area of the side where the second sealing head (843) is in contact with the second limiting rod (841) is smaller than that of the other side. area.
The filling low temperature quick connector according to claim 24, wherein the outer diameter of the second limiting ring (844) is the same as the inner diameter of the flow guiding column (811), and the second limiting ring (844) The length of the ) is smaller than the distance from the first limit ring (835) to the tip of the flow guide column (811).
The low temperature quick connector according to claim 25, wherein the first limiting ring (835), the first sealing head (834) and the second sealing head (843) are respectively recessed with a sealing groove (851), a sealing ring (852) made of an elastic material is disposed in the sealing groove (851).
The filling low temperature quick connector according to claim 26, wherein the end of the second limiting cylinder (842) is sleeved with a U-shaped ring (853) for sliding the inner side wall of the guiding guiding cylinder (845). .
The filling low temperature quick connector according to claim 22, wherein the flow guiding column (811) and the conveying column (821) are respectively provided with a pumping structure, and the end of the guiding column (811) is concentric A positioning ring (817) is disposed, and the positioning ring (817) is provided with a suction hole (813) that communicates with the first vacuum chamber (812), and a check valve (814) is disposed in the air suction hole (813).
The filling low temperature quick connector according to claim 28, wherein the air suction structure is provided with a connecting ring (815) attached to the flow guiding column (811), and the connecting ring (815) A positioning groove (816) is provided for the positioning ring (817) to fit and slide.