Marine cryogenic fluid loading arm

Abstract

The application provides a marine low-temperature fluid loading and unloading arm, relates to the technical field of loading and unloading arms, and comprises a high-point rope wheel, an outer arm pipe movably connected to the inner wall of the high-point rope wheel, a three-dimensional rotating pipe head arranged at the other end of the outer arm pipe, an inner arm pipe fixedly connected to the high-point rope wheel and penetrating through the outer arm pipe, an inner arm cylinder movably arranged below the outer wall of the inner arm pipe, a gas phase balance assembly arranged in the middle of the inner arm cylinder, the gas phase balance assembly comprising an auxiliary cylinder fixedly arranged in the middle of the inner arm cylinder, a second hose fixedly connected to the upper side of the inner arm cylinder, and a fixed pipe fixedly connected to the other end of the second hose. The motor is controlled to drive the fan blades to rotate, so that suction force is generated to extract the excess oil gas in the oil injection space into the oil suction space. During the adjustment process, the inner arm pipe is used for buffering, so that the air pressure during the loading and unloading process between the shore warehouse and the ship tank is balanced, and the overpressure and negative pressure states are prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of loading and unloading arms, in particular to a marine low-temperature fluid loading and unloading arm. BACKGROUND

[0002] The marine low-temperature fluid loading and unloading arm is a special loading and unloading equipment specially used for transporting ultra-low-temperature liquefied gas between a wharf and a liquefied gas transport ship. The core working principle thereof is similar to that of an ordinary oil loading arm, that is, multi-degree-of-freedom movement is realized through inner and outer arms connected by a rotary joint to complete docking, transportation and disengagement with a ship manifold; however, the marine low-temperature fluid loading and unloading arm has the unique feature of adopting a vacuum-insulated double-layer pipe structure and special materials and sealing technology suitable for ultra-low-temperature working conditions.

[0003] In the process of loading and unloading crude oil using a loading and unloading arm, the gas phase space in the internal tank, whether it is a shore tank or a ship cargo hold, will face the risk of pressure imbalance due to the rapid change of the liquid level - destructive negative pressure may be generated during unloading, and overpressure may be formed during loading. The widely used breather valve as a passive protection device not only has the risk of failure due to freezing and clogging, but also has slow response and insufficient flow capacity under extreme working conditions, and thus it is difficult to provide reliable safety protection.

[0004] For example, the "LNG shore-based intelligent loading and unloading arm" disclosed in the Chinese invention patent (publication number: CN111664353B) has the following disclosure in the specification: the present application discloses an LNG shore-based intelligent loading and unloading arm, which is suitable for oil and chemical liquid loading and unloading wharfs and the like. Although the above-mentioned patent is convenient for loading and unloading fluid between a ship and a shore, it lacks a protection structure for overpressure or negative pressure.

[0005] Therefore, we improve it and propose a marine low-temperature fluid loading and unloading arm. SUMMARY

[0006] The purpose of the present application is to solve the problem of pressure imbalance of shore tanks and ship holds due to the rapid change of the liquid level during the current loading and unloading of crude oil, to solve the inherent defects of the currently relied-on breather valve, and to provide reliable safety protection.

[0007] In order to achieve the above-mentioned application purpose, the present application provides a marine low-temperature fluid loading and unloading arm to improve the above-mentioned problems.

[0008] The present application is as follows:

[0009] The utility model provides a kind of marine cryogenic fluid loading and unloading arm, including high point rope wheel, outer arm pipe is movably connected in the inner wall of high point rope wheel, three-dimensional rotating pipe head is equipped in another end of outer arm pipe, inner arm pipe is fixedly connected with in one end of outer arm pipe and penetrates high point rope wheel, inner arm cylinder is movably installed in the lower outer wall of inner arm pipe, gas phase balance component is equipped in the middle part of inner arm cylinder, the auxiliary cylinder of gas phase balance component includes fixed mounting in the middle part of inner arm cylinder, second hose is fixedly connected in the upper side of inner arm cylinder, fixed pipe is fixedly connected in another end of second hose, third hose is fixedly connected in the lower side of inner arm cylinder, the inner wall of auxiliary cylinder is fixedly connected with two conical discs that are symmetric and evenly distributed, a plurality of filter screens are evenly distributed and arranged on the surface of conical disc, control motor is fixedly connected above the upper side of conical disc, the output shaft end of control motor is fixedly connected with rotating shaft, and rotating shaft is movably installed in the middle part of upper conical disc above, the outer wall of rotating shaft is fixedly connected with fan blade, and auxiliary connecting component is equipped in the end away from outer arm pipe of three-dimensional rotating pipe head.

[0010] As the preferred technical solution of the application, the lower end of the inner arm cylinder is provided with a sleeve ring, and a detachable elbow is movably installed at one end below the inner arm pipe and penetrates the sleeve ring.

[0011] As the preferred technical solution of the application, the other end of the fixed pipe is fixedly connected with a first hose, and a gas guide assembly is fixedly connected at the end away from the fixed pipe of the first hose.

[0012] As the preferred technical solution of the application, the auxiliary connecting component includes an inner tube movably installed at the other end of the three-dimensional rotating pipe head, the inner wall of the inner tube is movably connected with an upper rack ring, three positioning rack plates are fixedly connected on the inner wall of the upper rack ring in a circumferential and uniform manner, and the other ends of the three positioning rack plates are connected with each other, the one side of the positioning rack plate is movably connected with an elastic hinge, the other end of the elastic hinge is movably installed with a sector plate, and the one end of the upper rack ring close to the three-dimensional rotating pipe head is fixedly connected with an auxiliary spring.

[0013] As the preferred technical solution of the application, the other end of the auxiliary spring is fixedly connected with a positioning ring, and the outer wall of the positioning ring is fixedly installed on the inner wall of the inner tube.

[0014] As the preferred technical solution of the application, the outer wall of the inner tube is movably installed with a bearing ring, the outer ring of the bearing ring is fixedly connected with an inner arc rack ring, and a plurality of side ear plates are fixedly connected on the outer wall of the inner arc rack ring in a circumferential and uniform manner.

[0015] As a preferred technical scheme of the present application, the air guide assembly comprises an outer ring plate fixedly installed on the inner wall of the inner arc frame ring, an inner ring plate fixedly connected to the middle part of the inner arc frame ring, a pulley ring movably connected between the inner ring plate and the outer ring plate, an auxiliary guide pipe movably connected to the inner wall of the pulley ring, and a first hose fixedly connected to the other end of the auxiliary guide pipe.

[0016] As a preferred technical scheme of the present application, the pulley ring is fixedly connected with a positioning spring on one side, and the other end of the positioning spring is fixedly connected with a fixing ring, and the inner wall of the fixing ring is fixedly installed on the outer wall of the auxiliary guide pipe.

[0017] As a preferred technical scheme of the present application, the outer wall of the inner arm pipe is fixedly connected with a plurality of fixed frames in a straight line and uniformly distributed, and the other end of the fixed frame is fixedly installed on the outer wall of the inner arm cylinder.

[0018] As a preferred technical scheme of the present application, the outer wall of the column pipe is fixedly connected with a side pipe below, the outer wall of the column pipe is fixedly connected with a base below, and the lower surface of the base is fixedly connected with a plurality of inclined supports in a circumferential uniform distribution, and the side surface of the inclined support is fixedly installed on the outer wall of the column pipe below.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] In the scheme of the present application:

[0021] In order to solve the problem of pressure imbalance caused by rapid change of liquid level between shore tank and ship cabin during crude oil loading and unloading, and the inherent defects of the current breathing valve, such as easy failure and insufficient response, which makes it difficult to provide reliable safety protection, the motor is controlled to drive the rotating shaft to rotate the fan blades to generate suction to remove excess oil gas in the oil injection space and fill it into the oil suction space. During the adjustment process, the inner arm pipe is used for buffering, so as to balance the air pressure between the shore tank and the ship tank during the loading and unloading process, prevent overpressure and negative pressure state, and avoid direct air introduction to form explosive oil gas-air mixture, which has certain safety hidden danger.

[0022] The three fan-shaped plates in the inner pipe are connected to the pipeline of the ship tank, and after turning over, they form a conical frustum structure for rough connection with the pipeline. The three fan-shaped plates are pressed to turn over with elastic hinges, and form a plane with the three positioning frame plates to separate the inner pipe and the pipeline, so as to protect the inner pipe of the loading and unloading arm, and the three fan-shaped plates are separated by the frame plates after turning over, preventing impurities from entering when not loading and unloading, and quickly blocking the introduction of crude oil during the stop of loading and unloading process.

[0023] By pulling the auxiliary conduit away from the boat box, the positioning spring is squeezed to shrink, and the movable pulley ring is moved between the outer ring plate and the inner ring plate, thereby changing the position of the auxiliary conduit to align with the gas valve pipe, releasing the auxiliary conduit, and the positioning spring pushes the auxiliary conduit to connect with the gas valve pipe, so that the gas phase pipe can be quickly docked, to ensure the efficiency of the loading and unloading of crude oil fluid. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure One .

[0025] Figure 2 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure Two .

[0026] Figure 3 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure Three .

[0027] Figure 4 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure Four .

[0028] Figure 5 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure One .

[0029] Figure 6 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure 5 .

[0030] Figure 7 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure Two .

[0031] Figure 8 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure One .

[0032] Figure 9 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application .

[0033] Figure 10 The overall structure of the low-temperature fluid loading and unloading arm for ships provided by the present application Figure Two .

[0034] Indicated in the figure:

[0035] 1. High point rope wheel; 2, Inner arm cylinder; 3, Real auxiliary rope wheel; 4, Counterweight; 5, Column tube; 6, Outer arm tube; 7, Gas phase balance assembly; 701, Auxiliary cylinder; 702, Second hose; 703, Fixed tube; 704, First hose; 705, Gas phase tube; 706, Third hose; 707, Cone disc; 708, Filter screen; 709, Control motor; 710, Fan blade; 711, Rotation shaft; 712, Flow guide tube; 8, Auxiliary connection assembly; 801, Bearing ring; 802, Inner arc frame ring; 803, Side ear plate; 804, Inner tube; 805, Positioning frame plate; 806, Upper frame ring; 807, Auxiliary spring; 808, Elastic hinge; 809, Sector plate; 810, Positioning ring; 9, Gas guide assembly; 901, Outer ring plate; 902, Pulley ring; 903, Positioning spring; 904, Fixed ring; 905, Auxiliary guide tube; 906, Inner ring plate; 10, Base; 11, Side tube; 12, Inclined support; 13, Inner arm tube; 14, Fixed frame; 15, Detachable elbow; 16, Three-dimensional rotary pipe head; 17, Sleeve ring. DETAILED DESCRIPTION

[0036] In order to make the personnel in the technical field better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should belong to the protection scope of the present application.

[0037] As described in the background, the pressure imbalance risk of the shore tank and the ship cabin due to the rapid change of the liquid level in the process of loading and unloading crude oil makes the current dependent breathing valve difficult to provide reliable safety protection due to the inherent defects of easy failure and insufficient response.

[0038] In order to solve the technical problem, the present application provides a low-temperature fluid loading and unloading arm for ships, which is applied to the technical field of loading and unloading arms.

[0039] In order to make the personnel in the technical field better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should belong to the protection scope of the present application.

[0040] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0041] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] Example 1, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10The utility model provides a kind of marine cryogenic fluid loading and unloading arm, including high point rope wheel 1, outer arm pipe 6 is movably connected in the inner wall of high point rope wheel 1, outer arm pipe 6 other end is equipped with three-dimensional rotating pipe head 16, outer arm pipe 6 one end is fixedly connected with inner arm pipe 13 and is penetrated through high point rope wheel 1, inner arm pipe 13 outer wall lower side is movably installed with inner arm cylinder 2, inner arm cylinder 2 lower side is movably connected with real auxiliary rope wheel 3, real auxiliary rope wheel 3 one side is fixedly connected with counterweight 4, inner arm cylinder 2 middle part is equipped with gas phase balance component 7, gas phase balance component 7 includes auxiliary cylinder 701 fixedly installed in the middle part of inner arm cylinder 2, second hose 702 is fixedly connected with the upper side of one side of inner arm cylinder 2, second hose 702 other end is fixedly connected with fixed pipe 703, third hose 706 is fixedly connected with the lower side of one side of inner arm cylinder 2, two conical discs 707 are fixedly connected with the inner wall of auxiliary cylinder 701 and are symmetrically and evenly distributed, a plurality of filter screens 708 are evenly distributed and arranged on the surface of conical disc 707, control motor 709 is fixedly connected with the upper side of lower conical disc 707, the output shaft end of control motor 709 is fixedly connected with rotating shaft 711, and rotating shaft 711 upper side is movably installed in the middle part of upper conical disc 707, and fan blade 710 is fixedly connected with the outer wall of rotating shaft 711, auxiliary connecting component 8 is equipped with in three-dimensional rotating pipe head 16 and is away from the one end of outer arm pipe 6, loading and unloading arm is connected with shore bin by side pipe 11, is pulled by cable between high point rope wheel 1 and real auxiliary rope wheel 3, to adjust the angle between outer arm pipe 6 and inner arm cylinder 2, so that it is close to the ship body, to three-dimensional rotating pipe head 16 and ship tank connection, then auxiliary guide pipe 905 is connected with the gas valve pipe of ship tank, and the side pipe 11 of the outer wall of column pipe 5 is connected with the gas valve pipe of shore bin, in the process of loading and unloading crude oil material, the pump body in shore bin is started, and the crude oil is sucked to three-dimensional rotating pipe head 16, passes through outer arm pipe 6, inner arm pipe 13, detachable elbow 15, column pipe 5 and side pipe 11 and enters the shore bin, so that the crude oil material in the ship tank is unloaded into the shore bin, as the crude oil liquid in the ship tank gradually reduces, the air pressure of the ship tank becomes lower and lower, and the crude oil liquid in the shore bin gradually increases, the air pressure of the shore bin becomes higher and higher, in order to balance the gas phase, control motor 709 is started to drive rotating shaft 711 to rotate forward, drive fan blade 710 to rotate, generate suction from shore bin to ship tank, suck the oil gas formed by crude oil volatilization in the interior of shore bin to pass through gas phase pipe 705, to be separated from shore bin, enter guide pipe 712 and third hose 706 and guide into inner arm cylinder 2 to transition, as fan blade 710 rotates continuously, oil gas is guided out from inner arm cylinder 2, passes through second hose 702, fixed pipe 703, first hose 704 and auxiliary guide pipe 905, enters ship tank to fill the ship, in the mode of separation and filling, the air pressure between shore bin and ship tank is balanced.

[0043] By controlling the motor 709 to drive the fan blade 710 to rotate, the suction force is generated to suck the excess oil gas in the oil filling space into the oil suction space. During the adjustment process, the inner arm pipe 13 is used for buffering to balance the air pressure between the shore tank and the ship tank during the loading and unloading process, prevent the overpressure and negative pressure state, and avoid the direct introduction of air to form an explosive oil gas-air mixture, which has certain safety hazards.

[0044] Further, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the lower end of the inner arm cylinder 2 is provided with a sleeve ring 17, and the lower end of the inner arm pipe 13 is movably installed through the sleeve ring 17. The detachable elbow 15 is movably installed below the detachable elbow 15. The third hose 706 is movably installed through the column pipe 5 at the other end of the third hose 706. The flow guide pipe 712 is fixedly connected to the other end of the flow guide pipe 712. The gas phase pipe 705 is fixedly connected below the gas phase pipe 705. The inner arm cylinder 2 is connected to the shore tank through the gas phase pipe 705, the flow guide pipe 712 and the third hose 706 to provide a channel for the flow of oil gas.

[0045] Further, as shown in Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 , the other end of the fixed pipe 703 is fixedly connected to the first hose 704. The first hose 704 is fixedly connected to the air guide assembly 9 away from the fixed pipe 703. The first hose 704 is rotated to cooperate with the three-dimensional rotating pipe head 16 to cooperate with the auxiliary guide pipe 905 to change the position during the docking process, so as to be connected to the ship tank.

[0046] In example 2, the marine low-temperature fluid loading and unloading arm provided in example 1 is further optimized. Specifically, as shown in Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the auxiliary connecting assembly 8 includes an inner tube 804 movably mounted at the other end of the three-dimensional rotary pipe head 16, and an upper rack ring 806 movably connected to the inner wall of the inner tube 804. The inner wall of the upper rack ring 806 is uniformly and fixedly connected with three positioning rack plates 805, and the other ends of the three positioning rack plates 805 are connected with each other. The one side of the positioning rack plate 805 is movably connected with an elastic hinge 808, and the other end of the elastic hinge 808 is movably mounted with a sector plate 809. The ends of the three sector plates 809 away from the positioning rack plate 805 are close to each other, and the three sector plates 809 form a similar frustum structure to facilitate the rough butt joint operation. The end of the upper rack ring 806 close to the three-dimensional rotary pipe head 16 is fixedly connected with an auxiliary spring 807. When the three-dimensional rotary pipe head 16 is adjusted to the appropriate position, the inner tube 804 is in contact with the pipeline in the ship tank through the sector plate 809, and the arc edges of the three sector plates 809 are close to each other. Since there is a certain deviation during butt joint, the arc edges of the three sector plates 809 form a similar frustum structure to contact the pipeline. If the edges are not aligned, only one or two sector plates 809 will be pressed, and the butt joint will be easily deviated. When the three-dimensional position of the three-dimensional rotary pipe head 16 and the position of the inner tube 804 are adjusted for preliminary butt joint, the three sector plates 809 are pressed to rotate through the elastic hinge 808, so that the three sector plates 809 contact the three positioning rack plates 805 to form a plane, and the inner tube 804 is separated from the pipeline in the ship tank.

[0047] The three sector plates 809 in the inner tube 804 are used for butt joint with the pipeline in the ship tank. The three sector plates 809 form a similar frustum structure after turning to perform rough butt joint with the pipeline, and the three sector plates 809 are turned through the elastic hinge 808 to form a plane with the three positioning rack plates 805 to separate the inner tube 804 from the pipeline. Thus, the three sector plates 809 form a frustum structure to perform rough butt joint with the pipeline in the ship tank, so as to protect the inner tube 804 of the loading and unloading arm, and the three sector plates 809 form a plane with the rack plate after turning to separate, so as to prevent impurities from entering during the unloading process.

[0048] Further, as shown in Figure 5 and Figure 6 The other end of the auxiliary spring 807 is fixedly connected with a positioning ring 810, and the outer wall of the positioning ring 810 is fixedly mounted on the inner wall of the inner tube 804. When the pipeline in the ship tank enters during butt joint, it will first contact the upper rack ring 806 and press the auxiliary spring 807 to shrink, so as to cooperate with the pressure during butt joint and continuously compensate the dynamic movement of the ship to absorb most of the alternating stress.

[0049] Further, as shown in Figure 5 and Figure 6As shown, the inner tube 804 outer wall movable mounting bearing ring 801, bearing ring 801 outer fixed connection with the inner arc ring 802, inner arc ring 802 outer wall is evenly distributed fixed connection with a plurality of side ear plate 803, in the inner tube 804 and the pipe docking with the tank is completed, it is with bolt through the side ear plate 803 and the flange connected with the pipe positioning locking.

[0050] Example 3, further optimization of the marine low temperature fluid handling arm provided in example 1 and 2, specifically, as Figure 2 、 Figure 3 、 Figure 5 And Figure 7 As shown, the guide gas assembly 9 includes fixedly installed in the inner wall of the inner arc ring 802 outer ring plate 901, inner arc ring 802 middle fixed connection with the inner ring plate 906, inner ring plate 906 and outer ring plate 901 between the movable connection with the pulley ring 902, pulley ring 902 inner wall movable connection with the auxiliary guide pipe 905, and the other end of the auxiliary guide pipe 905 fixed connection with the first hose 704, in the docking is not locked state, it is to pull the auxiliary guide pipe 905, drive fixed ring 904 plate extrusion positioning spring 903 shrink, drive the guide pipe away from the tank, there is a certain gap, then the auxiliary guide pipe 905 is actuated, with the pulley ring 902 in the inner ring plate 906 and outer ring plate 901 between sliding, change the position of the auxiliary guide pipe 905, so that it is connected with the gas valve pipe of the tank, after completion of the release of the auxiliary guide pipe 905, the positioning spring 903 is released, with the fixed ring 904 to push the auxiliary guide pipe 905 into the gas valve pipe.

[0051] By pulling the auxiliary guide pipe 905 away from the tank, extrusion positioning spring 903 shrink, and then actuating the pulley ring 902 between the outer ring plate 901 and the inner ring plate 906, so as to change the position of the auxiliary guide pipe 905 to make it align with the gas valve pipe, release the auxiliary guide pipe 905, the positioning spring 903 push the auxiliary guide pipe 905 and the gas valve pipe connected, so as to be able to quickly connect the gas phase pipe 705, to ensure the efficiency of the crude oil loading and unloading.

[0052] Further, as shown in Figure 5 The side of the pulley ring 902 fixed connection with the positioning spring 903, the other end of the positioning spring 903 fixed connection with the fixed ring 904, the fixed ring 904 inner wall fixed installation in the outer wall of the auxiliary guide pipe 905, through the fixed ring 904 will be the positioning spring 903 on the surface of the pulley ring 902 and the auxiliary guide pipe 905 connected, to ensure the docking convenience.

[0053] Further, as shown in Figure 1 、 Figure 2 And Figure 3As shown, the inner arm tube 13 outer wall is linearly and uniformly distributed fixed connection with several fixed frame 14, and the fixed frame 14 the other end is fixedly installed on the outer wall of the inner arm cylinder 2, through the fixed frame 14 to fix the inner arm tube 13 on the outer wall of the inner arm cylinder, ensure the stability of the adjustment process.

[0054] Further, as Figure 1 、 Figure 2 、 Figure 3 With Figure 4 As shown, the outer wall of the column tube 5 is fixedly connected with a side tube 11 below, the outer wall of the column tube 5 is fixedly connected with a base 10 below, the lower surface of the base 10 is fixedly connected with a plurality of inclined supports 12 which are uniformly distributed in a circle, and the inclined supports 12 are fixedly installed on the outer wall of the column tube 5 below, and the stability of the overall structure is increased by erecting a plurality of inclined supports 12 on the outer wall of the column tube 5.

[0055] The use process of the marine low-temperature fluid loading and unloading arm provided by the application is as follows:

[0056] Working principle: after the ship is berthed, the loading and unloading arm is in the "rest position", usually in the state of being lifted and withdrawn, the operator drives and controls the inner arm tube 13 and the outer arm tube 6 through the control system to move the three-dimensional rotating tube head 16 at the end to the front of the tanker pipeline.

[0057] Oil pipe butt joint: after the three-dimensional rotating tube head 16 is adjusted to the appropriate position, the inner tube 804 is contacted with the pipeline in the ship tank by the sector plate 809, and the arc edges of the three sector plates 809 are close to each other, since there is a certain deviation during the butt joint process, the arc edges of the three sector plates 809 form a conical frustum structure to contact the pipeline, if the edges are not aligned, only one or two sector plates 809 will be pressed and deviated, after the three-dimensional position of the three-dimensional rotating tube head 16 and the position of the inner tube 804 are adjusted to preliminarily butt joint, the three sector plates 809 are pressed to rotate by the elastic hinge 808, so that the three sector plates 809 and the three positioning frame plates 805 form a plane, and the inner tube 804 and the pipeline of the ship tank are separated.

[0058] Gas phase butt joint: in the unlocked state of the butt joint, the auxiliary guide pipe 905 is pulled to drive the fixed ring 904 to extrude the positioning spring 903 to shrink, drive the guide pipe to move away from the ship tank, after a certain gap is formed, the auxiliary guide pipe 905 is actuated, the pulley ring 902 slides between the inner ring plate 906 and the outer ring plate 901, the position of the auxiliary guide pipe 905 is changed, the auxiliary guide pipe 905 is connected with the gas valve pipe of the shore tank, after completion, the auxiliary guide pipe 905 is released, the positioning spring 903 is released, the fixed ring 904 pushes the auxiliary guide pipe 905 into the gas valve pipe, and the side tube 11 of the outer wall of the column tube 5 is connected with the gas valve pipe of the shore tank.

[0059] Unloading: in the process of loading and unloading crude oil materials, the pump body in the shore warehouse is started to suck crude oil through the three-dimensional rotating pipe head 16, first through the inner pipe 804, then impact the fan-shaped plate 809 to the three-dimensional rotating pipe head 16 through the elastic hinge 808, open the loading and unloading process, and in the process of stopping oil transportation, the elastic hinge 808 loses the pressure generated by the crude oil passing through, the fan-shaped plate 809 reversely flips and contacts with the positioning plate 805 to form a plane to separate, and the crude oil passing through the inner pipe 804 enters the shore warehouse through the outer arm pipe 6, the inner arm pipe 13, the detachable elbow 15, the column pipe 5 and the side pipe 11, so as to unload the crude oil materials in the ship tank to the shore warehouse. The three-dimensional rotating pipe head 16 of the loading and unloading arm allows it to follow within a certain range, absorbs these displacements and moments, and avoids causing excessive stress on the equipment or ship.

[0060] Gas phase balance: as the crude oil liquid in the ship tank gradually decreases, the air pressure of the ship tank becomes lower and lower, and as the crude oil liquid in the shore warehouse gradually increases, the air pressure of the shore warehouse becomes higher and higher. In order to balance the gas phase, the control motor 709 is started to drive the rotating shaft 711 to rotate in the positive direction, drive the fan blade 710 to rotate, generate suction force from the shore warehouse to the ship tank, and suck the oil gas formed by the crude oil volatilization in the shore warehouse through the gas phase pipe 705 to be separated from the shore warehouse, enter the flow guide pipe 712 and the third hose 706 to guide into the inner arm cylinder 2 for transition. With the continuous rotation of the fan blade 710, the oil gas is guided out of the inner arm cylinder 2, passes through the second hose 702, the fixed pipe 703, the first hose 704 and the auxiliary guide pipe 905, enters the ship tank to fill the ship, and in the mode of separation and filling, the air pressure between the shore warehouse and the ship tank is balanced.

[0061] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] Obviously, the above-described embodiments are only some embodiments but not all the embodiments of the present application, the preferred embodiments of the present application are shown in the drawings, but do not limit the patent scope of the present application. The present application can be implemented in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacements to some technical features therein. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A marine cryogenic fluid loading and unloading boom, comprising a high point sheave (1), an outer boom tube (6) movably connected to the inner wall of the high point sheave (1), a three-dimensional rotating tube head (16) provided at the other end of the outer boom tube (6), an inner boom tube (13) fixedly connected to one end of the outer boom tube (6) through the high point sheave (1), and an inner boom cylinder (2) movably installed below the outer wall of the inner boom tube (13), characterized in that, A gas phase balance assembly (7) is provided in the middle of the inner arm cylinder (2). The gas phase balance assembly (7) includes an auxiliary cylinder (701) fixedly installed in the middle of the inner arm cylinder (2). A second hose (702) is fixedly connected to the upper side of one side of the inner arm cylinder (2). A fixed pipe (703) is fixedly connected to the other end of the second hose (702). A third hose (706) is fixedly connected to the lower side of one side of the inner arm cylinder (2). Two conical discs (707) are fixedly connected to the inner wall of the auxiliary cylinder (701) in a symmetrical and uniform manner. The surface of the cone disk (707) is evenly distributed with several filter screens (708). A control motor (709) is fixedly connected above the cone disk (707). A rotating shaft (711) is fixedly connected to the output shaft end of the control motor (709). The rotating shaft (711) is movably installed in the middle of the upper cone disk (707). A fan blade (710) is fixedly connected to the outer wall of the rotating shaft (711). An auxiliary connecting component (8) is provided at the end of the three-dimensional rotating tube head (16) away from the outer arm tube (6).

2. The marine cryogenic fluid loading and unloading boom according to claim 1, characterized in that, The lower end of the inner arm tube (2) is provided with a sleeve ring (17). One end of the inner arm tube (13) passes through the sleeve ring (17) and is movably installed with a detachable elbow (15). A column tube (5) is movably installed below the detachable elbow (15). The other end of the third hose (706) passes through the column tube (5) and is fixedly connected to a guide tube (712). The other end of the guide tube (712) passes through the column tube (5) and is fixedly connected to a gas phase tube (705).

3. A marine cryogenic fluid loading and unloading boom according to claim 2, characterized in that, The other end of the fixed tube (703) is fixedly connected to a first hose (704), and the end of the first hose (704) away from the fixed tube (703) is fixedly connected to an air guide assembly (9).

4. A marine cryogenic fluid loading and unloading boom according to claim 1, characterized in that, The auxiliary connection assembly (8) includes an inner tube (804) movably installed at the other end of the three-dimensional rotating tube head (16). An upper frame ring (806) is movably connected to the inner wall of the inner tube (804). Three positioning frame plates (805) are fixedly connected to the inner wall of the upper frame ring (806) in a circumferentially even distribution. The other ends of the three positioning frame plates (805) are connected to each other. An elastic hinge (808) is movably connected to one side of the positioning frame plate (805). A fan-shaped plate (809) is movably installed at the other end of the elastic hinge (808). An auxiliary spring (807) is fixedly connected to the end of the upper frame ring (806) near the three-dimensional rotating tube head (16).

5. A marine cryogenic fluid loading and unloading boom according to claim 4, characterized in that, The other end of the auxiliary spring (807) is fixedly connected to a positioning ring (810), and the outer wall of the positioning ring (810) is fixedly installed on the inner wall of the inner tube (804).

6. A marine cryogenic fluid loading and unloading boom according to claim 4, characterized in that, The outer wall of the inner tube (804) is movably mounted with a bearing ring (801), and the outer ring of the bearing ring (801) is fixedly connected with an inner arc frame ring (802). The outer wall of the inner arc frame ring (802) is evenly distributed with several side ear plates (803) fixedly connected.

7. A marine cryogenic fluid loading and unloading boom according to claim 3, characterized in that, The air guiding assembly (9) includes an outer ring plate (901) fixedly installed on the inner wall of the inner arc frame ring (802), an inner ring plate (906) fixedly connected in the middle of the inner arc frame ring (802), a pulley ring (902) movably connected between the inner ring plate (906) and the outer ring plate (901), an auxiliary conduit (905) movably connected to the inner wall of the pulley ring (902), and a first hose (704) fixedly connected to the other end of the auxiliary conduit (905).

8. A marine cryogenic fluid loading and unloading boom according to claim 7, characterized in that, A positioning spring (903) is fixedly connected to one side of the pulley ring (902), and a fixing ring (904) is fixedly connected to the other end of the positioning spring (903). The inner wall of the fixing ring (904) is fixedly installed on the outer wall of the auxiliary guide tube (905).

9. A marine cryogenic fluid loading and unloading boom according to claim 2, characterized in that, The outer wall of the inner arm tube (13) is uniformly and linearly connected with several fixed brackets (14), and the other end of the fixed bracket (14) is fixedly installed on the outer wall of the inner arm tube (2).

10. A marine cryogenic fluid loading and unloading boom according to claim 2, characterized in that, A side tube (11) is fixedly connected to the lower outer wall of the column tube (5), and a base (10) is fixedly connected to the lower outer wall of the column tube (5). Several inclined supports (12) are fixedly connected to the lower surface of the base (10) in a circumferentially even distribution, and the inclined supports (12) are fixedly installed on the lower outer wall of the column tube (5) on the side.

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