Dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment

Abstract

The present invention discloses a dual-channel single-point mooring liquid slip ring device based on ships and land storage equipment, including a stator assembly and a rotor assembly, wherein the rotor assembly is arranged outside the stator assembly through a first bearing slewing support mechanism and a second bearing slewing support mechanism; wherein the stator assembly includes a hollow central branch pipe, and a lower cylinder is fixedly welded at the lower part of the central branch pipe; a rotor assembly is installed at the upper part of the central branch pipe, and the rotor assembly includes an upper cylinder; the lower part of the upper cylinder is installed on the upper part of the lower cylinder through a first bearing slewing support mechanism, and the upper cylinder is installed at the upper part of the central branch pipe through a second bearing slewing support mechanism; a second fluid channel independent of the first fluid channel inside the central branch pipe is formed between the upper cylinder and the lower cylinder. The present invention can achieve the purpose of simultaneously transmitting different fluids in two fluid channels, and each fluid channel has a fluid inlet and a fluid outlet for transmission, which can not only improve the efficiency of fluid transmission, but also save the time of fluid transmission.

Description

Technical Field

[0001] The invention belongs to the technical field of marine engineering equipment, and in particular relates to a dual-channel single-point mooring liquid slip ring device based on ships and land storage equipment. Background Art

[0002] With the development of offshore oil, large-size slip ring devices have become the development trend of single-point mooring slip rings. Due to the harsh working environment at sea, as the size of the slip ring increases, strict requirements are placed on the stability and reliability of the slip ring. The slip ring device, also known as a liquid rotary joint, is a transfer device that connects the offshore floating body to the submarine pipeline. Its main function is to transport fluids when the floating body rotates. It is the core equipment of the single-point mooring system.

[0003] Existing liquid slip ring devices are generally used on oil production platforms to achieve the use of liquids, gases and pipelines during the production process. For example, the prior art discloses a liquid slip ring device for a single-column mooring production system, and its publication number is CN215922486U; the slip ring of the prior art is applied to the single-column mooring production system to combine the single-point mooring with the wellhead production platform, and the oil and gas of the single-column wellhead production platform are transported to the floating liquefied natural gas production storage and unloading device through the liquid slip ring device, and the fluid on the floating liquefied natural gas storage and unloading device can also be transported to the single-column wellhead production platform through the liquid slip ring device, thereby improving the economic efficiency of offshore oil field development through the liquid slip ring device.

[0004] The prior art single column mooring production system of a liquid slip ring device comprises a liquid slip ring stator and a liquid slip ring rotor which are sleeved together and rotated and sealed; a first inlet and a second inlet are arranged on the top of the liquid slip ring stator, and a first outlet and a second outlet are arranged on the outer side of the liquid slip ring rotor to form a first fluid channel; a third inlet and a fourth inlet are also arranged on the top of the liquid slip ring stator, and a third outlet and a fourth outlet are also arranged on the outer side of the liquid slip ring rotor to form a second fluid channel; the first fluid channel and the second fluid channel are independent of each other and remain sealed. The present invention can achieve the purpose of multi-channel transmission of different fluids at the same time, and each fluid channel is provided with multiple fluid inlets and fluid outlets for fluid transmission, which can not only improve the efficiency of fluid transmission, but also save the time of fluid transmission. According to the prior art, it can be known that the central large hole of the liquid slip ring stator is used for the installation of drilling equipment, and the first fluid channel and the second fluid channel are established in the side wall of the liquid slip ring stator to realize multi-channel liquid transmission; one of the two channels is used to transport water during drilling, and the other channel is used to transport oil and gas.

[0005] At present, in practical applications, there is no use of liquid slip rings between ships and docks or land to achieve the transportation between liquid commodities stored on ships and storage tanks at docks; in existing designs, the transportation of liquid commodities between transport ships and docks is mainly achieved by ships docking at docks, such as Fig.10 Therefore, it is necessary to build a special dock for ships transporting liquids at the port. It is well known that the construction of the dock has high requirements on the coastline, water depth, environmental protection and other conditions, and the construction period is long and the cost is high.

[0006] The present invention designs a dual-channel single-point mooring liquid slip ring device based on ships and land storage equipment, which solves the construction of port terminals and realizes the construction of single-point mooring systems at a certain distance from the port to realize the transportation of liquid commodities between ships and existing port terminals or land platforms, avoiding the problems existing in terminal construction. Summary of the invention

[0007] In view of the problems existing in the prior art, the present invention provides a dual-channel single-point mooring liquid slip ring device based on ships and land storage equipment, which realizes the transportation of liquid commodities between ships and existing port terminals or land platforms, avoids the problems existing in terminal construction, and reduces costs.

[0008] The present invention is implemented as follows: a dual-channel single-point mooring liquid slip ring device based on a ship and a land storage device, comprising a stator assembly and a rotor assembly, wherein the rotor assembly is arranged outside the stator assembly through a first bearing slewing support mechanism and a second bearing slewing support mechanism, and the rotor assembly rotates around the stator assembly and maintains a rotary seal; wherein the stator assembly comprises a hollow central branch pipe, the lower end of the central branch pipe is a first fluid inlet flange, the upper end of the central branch pipe is a first fluid outlet flange, and a first fluid channel is formed from the first fluid inlet flange to the first fluid outlet flange; the lower portion of the central branch pipe is fixedly welded A lower cylinder is connected, and a second fluid inlet flange is provided on the outer wall of the lower cylinder; a rotor assembly is installed on the upper part of the central branch pipe; the rotor assembly includes an upper cylinder, and a second fluid outlet flange is provided on the outer wall of the upper cylinder; the lower part of the upper cylinder is installed on the upper part of the lower cylinder through a first bearing rotation support mechanism, and the upper part of the upper cylinder is installed on the upper part of the central branch pipe through a second bearing rotation support mechanism; a second fluid channel independent of the first fluid channel inside the central branch pipe is formed between the upper and lower cylinders; the first bearing rotation support mechanism includes a middle cover fixing sleeve welded to the upper end of the lower cylinder, and the outer wall of the lower end of the middle cover fixing sleeve A middle cover plate is integrally provided, and the middle cover plate is fixedly connected to the single point mooring platform. A first rotary sealing ring is installed on the upper surface of the middle cover plate by fasteners, and a first bearing sleeve is installed in the first rotary sealing ring. A rotary gap is provided between the lower end of the first bearing sleeve and the upper surface of the middle cover plate, and a first rotary sealing member abutting against the first bearing sleeve is installed on the inner wall of the first rotary sealing ring; a first bearing is installed between the middle cover fixing sleeve and the first bearing sleeve, and a first bearing inner upper pressure cover is provided on the upper part of the static ring of the first bearing, and the first bearing inner upper pressure cover is fixedly connected to the middle cover fixing sleeve by fasteners; the first A second bearing outer upper pressure cover is provided on the upper part of the dynamic ring of the bearing, and the second bearing outer upper pressure cover is connected to the first bearing outer sleeve through fasteners, and a rotary drive ring is welded to the outer wall of the first bearing outer sleeve, and a traction ring is provided on the rotary drive ring; a first bearing outer cover is provided on the upper surface of the second bearing outer upper pressure cover, and the first bearing outer cover is connected to the first bearing outer sleeve through fasteners; a first bearing upper inner cover is connected to the inner ring of the first bearing outer cover, and a first bearing inner cover is installed on the inner side of the first bearing inner upper pressure cover between the upper end surface of the middle cover fixing sleeve and the first bearing upper inner cover; a second rotary sealing component is provided between the first bearing inner cover and the first bearing upper inner cover.

[0009] Preferably, a traction ring is provided on the rotary drive ring.

[0010] Preferably, the second bearing slewing support mechanism comprises a second bearing lower inner sleeve welded to the upper end of the central branch pipe, an upper support ring is provided at the lower end of the second bearing lower inner sleeve, a second bearing lower middle sleeve is installed on the upper support ring, a second bearing lower outer sleeve is sleeved on the outer surface of the second bearing lower middle sleeve, the second bearing lower outer sleeve is connected to the lower end surface of the second bearing middle outer sleeve by fasteners, a third slewing sealing member is provided between the second bearing lower middle sleeve and the second bearing lower outer sleeve; a second bearing upper inner cover is provided on the upper surface of the second bearing lower inner sleeve in the second bearing middle outer sleeve; the second bearing middle outer sleeve and the second A second bearing is installed between the lower inner sleeves of the bearings; a second bearing pressure cover is installed on the upper surface of the flange connecting ring of the second bearing upper inner cover; the upper end surface of the outer sleeve of the second bearing is fixedly connected to the second bearing flange upper cover by fasteners; a second rotating sealing ring is integrated or welded on the lower surface of the inner ring of the second bearing flange upper cover, and a fourth rotating sealing component is provided between the second rotating sealing ring and the second bearing upper inner cover; an upper sealing ring is welded on the outer circumference at the lower middle position of the outer sleeve of the second bearing, and the upper sealing ring is fixedly connected to the lower sealing ring at the upper end of the upper cylinder by fasteners, and the lower sealing ring is welded to the upper cylinder.

[0011] Preferably, the first fluid inlet flange, the second fluid inlet flange, the second bearing flange upper cover and the upper part of the second fluid outlet flange are mounted with sealing glands via fasteners.

[0012] Preferably, a plurality of reinforcing ribs are welded between the central branch pipe and the middle cover fixing sleeve along the outer circumference of the central branch pipe, and a second fluid channel is formed between adjacent reinforcing ribs.

[0013] Preferably, at least one annular groove is provided on the inner surface of the first rotary sealing ring, and the first rotary sealing component is installed in the annular groove. Preferably, the first rotary sealing component adopts a spring energy storage sealing ring to achieve dynamic sealing between the first rotary sealing ring and the first bearing sleeve.

[0014] Preferably, at least one annular groove is provided on the inner surface of the second rotary sealing ring, and the fourth rotary sealing component is installed in the annular groove to achieve dynamic sealing between the second rotary sealing ring and the inner cover on the second bearing.

[0015] Preferably, at least one annular groove is provided on the inner surface of the second bearing lower sleeve, and a third rotating sealing component is provided in the annular groove. The third rotating sealing component adopts a spring energy storage sealing ring and is used for dynamic sealing between the second bearing lower sleeve and the second bearing lower middle sleeve.

[0016] Preferably, the first bearing outer sleeve is provided with a first bearing lubrication filling channel; and the second bearing middle sleeve is provided with a second bearing lubrication filling channel.

[0017] Preferably, a rib plate is provided between the upper sealing ring and the outer sleeve of the second bearing; and a lifting hole is also provided on the rib plate.

[0018] Advantages and technical effects of the present invention: Since the present invention and the prior art (CN215922486U) have different application fields and design requirements, the present invention is applied to the two-way transportation of liquid commodities between ships and port terminals or land platforms, and the prior art is used for the transportation of liquids, gases or lines between drilling platforms and port terminals. The technical schemes and technical effects adopted by the present invention and the prior art are also different; specifically, the present invention adopts the above-mentioned technical scheme, that is, two independent fluid channels are designed, so that different fluids can be transmitted simultaneously in two fluid channels during directional transportation between ships and land or inherent terminals, and each fluid channel has a fluid inlet and a fluid outlet for transportation, which can not only improve the efficiency of fluid transportation, but also save the time of fluid transportation.

[0019] The present invention provides two fluid channels on one liquid lubricating ring instead of arranging multiple liquid lubricating rings in parallel in the prior art, which reduces the production cost on the one hand and reduces the weight above the single column on the other hand, so that the overall center of gravity of the single column is lowered, which is more stable and safe and has a longer service life.

[0020] The present invention realizes sealing by arranging a rotary sealing member and an end face sealing ring on the mating surface between the parts, thereby having a double sealing effect. The fluid in the fluid channel is sealed by arranging a plurality of sealing rings, thereby enhancing the sealing effect of the fluid channel, thereby achieving a better sealing effect of the liquid slip ring device.

[0021] In addition, each functional unit of the present invention is independently arranged, and a certain liquid slip ring component thereof can be individually disassembled and assembled, and has the characteristics of stable rotation, good sealing, easy installation, and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 yes Figure 1 A top view of

[0024] Figure 3 yes Figure 1 Bottom view of

[0025] Figure 4 yes Figure 2 Middle AA section view;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 6 is a schematic diagram of the stator assembly structure;

[0028] Figure 7 is a schematic diagram of the rotor assembly structure;

[0029] Figure 8 It is a state diagram of the present invention;

[0030] Fig. 9 yes Figure 8 A top view of

[0031] Fig.10 It is a structural diagram of the existing technology status.

[0032] In the figure, 1, stator assembly; 101, central branch pipe; 102, lower cylinder; 103, first fluid inlet flange; 104, first fluid outlet flange; 105, second fluid inlet flange; 107, reinforcing rib plate; 2, rotor assembly; 201, upper sealing ring; 202, upper sealing ring; 203, upper cylinder; 204, second fluid outlet flange; 301, first rotary sealing ring; 3010, first rotary sealing component; 302, middle cover fixing sleeve; 3021, middle cover plate; 303, first bearing inner upper pressure cover; 304, second rotary sealing ring; 3040, second rotary sealing component; 401, first bearing outer sleeve; 402, first bearing upper inner cover; 403, first bearing upper outer cover; 40 4. The upper inner cover of the first bearing; 405. The first bearing; 406. The rotary drive ring; 407. The traction ring; 501. The lower middle sleeve of the second bearing; 502. The lower inner sleeve of the second bearing; 503. The upper inner cover of the second bearing; 5030. The flange connection ring; 504. The second bearing cover; 601. The lower outer sleeve of the second bearing; 6010. The third rotary sealing component; 602. The middle outer sleeve of the second bearing; 603. The upper flange cover of the second bearing; 6030. The second rotary sealing ring; 6031. The fourth rotary sealing component; 604. The second bearing; 7. The sealing cover; 7-1. The handle; 801. The lubrication filling channel of the first bearing; 802. The lubrication filling channel of the first bearing; 9. The rib plate; 901. The lifting hole; 100, first fluid channel; 200, second fluid channel; 300, ship; 400, single point platform; 500, dock; 600, cable; 700, floating hose. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] See also Figures 1 to 9A dual-channel single-point mooring system slip ring device includes a stator assembly and a rotor assembly. The rotor assembly 2 is arranged outside the stator assembly 1 through a first bearing slewing support mechanism and a second bearing slewing support mechanism. The rotor assembly rotates around the stator assembly and maintains a rotary seal. The stator assembly is fixedly installed on a single-point platform 400. The rotor assembly is connected to a ship through a cable 600. Under the action of external wind and waves, the cable drives the rotor assembly to rotate, thereby providing a driving force for the liquid slip ring device, and then the rotor assembly moves around the stator assembly under the rotation of the ship with the wind and waves, and no compulsory traction force is generated to damage the floating hose used to transport the fluid, thereby achieving single-point mooring.

[0035] Preferably, the stator assembly includes a hollow central branch pipe 101, the lower end of the central branch pipe is a first fluid inlet flange 103, and the first fluid inlet flange 103 is connected to the submarine pipeline connected to the port terminal through a pipeline; the upper end of the central branch pipe is a first fluid outlet flange 104, and the first fluid outlet flange 104 is connected to the ship through a floating hose, and the floating hose is a mature technology in offshore oil transportation; a first fluid channel 100 is formed from the first fluid inlet flange to the first fluid outlet flange, and the first fluid channel is used to establish a first fluid transportation channel between the ship and the dock 500 or the land platform, and its function is different from the center hole in the prior art. The center hole in the prior art is used for the installation of drilling tools and cannot transport fluids; a lower tube 102 is fixedly welded to the lower part of the central branch pipe, and a second fluid inlet flange 105 is provided on the outer wall of the lower tube, and the second fluid inlet flange 105 is connected to the submarine pipeline connected to the port terminal through a pipeline; a rotor assembly 2 is installed on the upper part of the central branch pipe.

[0036] The rotor assembly 2 comprises an upper cylinder 203, the outer wall of which is provided with a second fluid outlet flange 204, which is connected to the ship through a floating hose 700; the lower part of the upper cylinder 203 is mounted on the upper part of the lower cylinder through a first bearing slewing support mechanism, and the upper part of the upper cylinder is mounted on the upper part of the central branch pipe 101) through a second bearing slewing support mechanism; a second fluid channel (200) independent of the first fluid channel inside the central branch pipe is formed between the upper cylinder and the lower cylinder, and the second fluid channel is used to establish a second fluid transportation channel between the ship and the dock 500 or the land platform. Since the single-point mooring of the present invention is only used for fluid transportation, the inner diameters of the first fluid channel 100 and the second fluid channel 200 can be set relatively large to facilitate the transportation of the medium per unit time. The present invention preferably sets the caliber to 18 inches, which is designed to be larger than the inner diameter of the traditional fluid transportation channel, and can realize large-flow fluid transportation and improve transportation efficiency, which is impossible to achieve in the prior art (CN215922486U).

[0037] The first bearing rotary support mechanism comprises a middle cover fixing sleeve 302 welded to the upper end of the lower cylinder, a middle cover plate 3021 is integrally provided on the outer wall of the lower end of the middle cover fixing sleeve, the middle cover plate is fixedly connected to the single point mooring platform, a first rotary sealing ring 301 is installed on the upper surface of the middle cover plate by fasteners, a first bearing sleeve 401 is installed in the first rotary sealing ring, a rotary gap is provided between the lower end of the first bearing sleeve and the upper surface of the middle cover plate, a first rotary sealing member 3010 abutting against the first bearing sleeve is installed on the inner wall of the first rotary sealing ring, so as to realize the sealing of the first bearing sleeve during the rotation process; a first bearing 405 is installed between the middle cover fixing sleeve and the first bearing sleeve 401, the first bearing 405 is preferably a pressure bearing, and has an anti-overturning function, a first bearing inner upper pressure cover 303 is provided on the upper part of the static ring of the first bearing, and the first bearing inner upper pressure cover is fixedly connected to the middle cover fixing sleeve 302 by fasteners; the upper A second bearing outer upper pressure cover 404 is provided on the part, and the second bearing outer upper pressure cover is connected to the first bearing sleeve 401 through fasteners. A rotary drive ring 406 is welded on the outer wall of the first bearing sleeve, and a traction ring 407 is provided on the rotary drive ring. The traction ring is connected to the ship through a cable. As the ship drifts on the water, the cable drives the rotary drive flat ring to rotate, and the feed drive rotor assembly rotates around the center of the stator assembly. Several traction rings 407 can be evenly distributed along the circumferential direction of the rotary drive ring, which is convenient for connection in multiple directions; a first bearing outer cover 403 is provided on the upper surface of the second bearing outer upper pressure cover 404, and the first bearing outer cover is connected to the first bearing sleeve 401 through fasteners; a first bearing upper inner cover 402 is connected to the inner ring of the first bearing outer cover 403, and a first bearing inner cover 304 is installed on the inner side of the first bearing inner upper pressure cover between the upper end surface of the middle cover fixing sleeve and the first bearing upper inner cover 402; a second rotary sealing component 3040 is provided between the first bearing inner cover 304 and the first bearing upper inner cover. The first bearing sleeve 401 and the first rotating sealing ring 301, the first bearing sleeve 401 and the second bearing flange upper cover 404, and the first bearing upper inner cover 402 and the second rotating sealing ring 304 are all sealed to ensure that the operating space in the first bearing chamber of the first bearing is always in a sealed state, thereby ensuring the service life of the first bearing.

[0038] The present invention is provided with two fluid inlets and two fluid outlets. Under the condition of the same volume and the same flow rate, the same fluid is transmitted through the two fluid inlets and two fluid outlets, thereby improving the speed of fluid transmission and reducing the time of fluid transmission; the above-mentioned fluid inlet can also be used as a fluid outlet, and the fluid outlet can also be used as a fluid inlet. In addition, the present invention opens two fluid channels on a liquid slip ring to replace the parallel arrangement of multiple liquid slip rings in the prior art, which reduces the production cost on the one hand and reduces the weight above the single column on the other hand, making the overall center of gravity of the single column lower, more stable and safe, and with a longer service life. The present invention designs two independent fluid channels, so that different fluids can be transmitted simultaneously in two fluid channels during the directional transportation process between ships and docks, and each fluid channel has a fluid inlet and a fluid outlet for transmission, which can not only improve the efficiency of fluid transmission, but also save the time of fluid transmission.

[0039] Preferably, a traction ring 407 is provided on the rotary drive ring.

[0040] Preferably, the second bearing slewing support mechanism comprises a second bearing lower inner sleeve 502 welded to the upper end of the central branch pipe, an upper support ring 5021 is provided at the lower end of the second bearing lower inner sleeve 502, a second bearing lower middle sleeve 501 is installed on the upper support ring, a second bearing lower outer sleeve 601 is provided on the outer sleeve of the second bearing lower middle sleeve, the second bearing lower outer sleeve is connected to the lower end surface of the second bearing middle outer sleeve 602 by fasteners, a third slewing sealing member 6010 is provided between the second bearing lower middle sleeve 501 and the second bearing lower outer sleeve 601; a second bearing upper inner cover 503 is provided on the upper surface of the second bearing lower inner sleeve 502 in the second bearing middle outer sleeve 602; a second bearing 604 is installed between the second bearing middle outer sleeve 602 and the second bearing lower inner sleeve 502, and the second bearing is mainly used for straightening and slewing support according to its actual operation when the second bearing is actually selected, so it can be preferably a double-row roller shaft. The second bearing pressure cover 504 is installed on the upper surface of the flange connection ring 5030 of the second bearing upper inner cover 503; the upper end surface of the second bearing middle outer sleeve 602 is fixedly connected with the second bearing flange upper cover 603 by fasteners. In actual production and manufacturing, the first fluid outlet flange 104 and the second bearing flange upper cover 603 are an integrated structure, and its inner ring serves as the first fluid outlet flange 104; the upper part of the second bearing flange upper cover 603 is installed with a top cover 7 by fasteners; the lower surface of the inner ring of the second bearing flange upper cover is integrated or welded with a second rotary sealing ring 6030, and a fourth rotary sealing component 6031 is provided between the second rotary sealing ring 6030 and the second bearing upper inner cover 503; an upper sealing ring 201 is welded on the outer circumference of the lower middle part of the second bearing middle outer sleeve 602, and the upper sealing ring is fixedly connected with the lower sealing ring 202 at the upper end of the upper cylinder by fasteners, and the lower sealing ring is welded on the upper cylinder;

[0041] A third rotating sealing component 6031 is provided between the second bearing flange upper cover, the second bearing middle outer sleeve 602 and the second bearing flange upper cover 603, and the second rotating sealing ring 6031 and the second bearing upper inner cover 503 to ensure that the second bearing chamber is always in a sealed environment, thereby preventing external moisture from entering the second bearing chamber and ensuring the service life of the second bearing.

[0042] The first fluid inlet flange 103, the second fluid inlet flange 105, the second bearing flange upper cover 603 and the upper part of the second fluid outlet flange 204 are installed with a sealing cover 7 through fasteners. The sealing cover ensures that the first fluid delivery channel and the second fluid delivery channel are not contaminated during the single-point mooring assembly. When the delivery pipeline needs to be connected, it can be removed without cleaning the internal space, thereby reducing the construction period; the sealing cover is provided with a handle 7-1 to facilitate assembly installation and disassembly.

[0043] Preferably, a reinforcing rib plate 107 is welded between the central branch pipe 101 and the middle cover fixing sleeve 302, and the design of the rib plate ensures the strength of the central branch pipe.

[0044] Preferably, the first bearing 405 is placed on the bosses of the first bearing outer sleeve 401 and the middle cover fixing sleeve 302, and is pressed by the first bearing upper inner cover 303 and the first bearing outer upper pressure cover 404; the second bearing 604 is placed on the boss of the second bearing lower inner sleeve 502, and is pressed by the second bearing pressure cover 504. The design of the boss ensures the lower positioning of the first bearing and the second bearing, thereby improving assembly efficiency and installation accuracy.

[0045] Preferably, at least one annular groove is provided on the inner surface of the first rotating sealing ring 301, and the first rotating sealing component is installed in the annular groove. Preferably, the first rotating sealing component adopts a spring energy storage sealing ring to achieve dynamic sealing between the first rotating sealing ring 301 and the first bearing sleeve 401.

[0046] Preferably, at least one annular groove is provided on the inner surface of the second rotating sealing ring 6030, and the fourth rotating sealing component is installed in the annular groove. Preferably, the fourth rotating sealing component adopts a spring energy storage sealing ring to achieve dynamic sealing between the second rotating sealing ring 6030 and the inner cover 503 on the second bearing.

[0047] Preferably, at least one annular groove is provided on the inner surface of the second bearing lower outer sleeve 601, and a third rotating sealing component is provided in the annular groove. The third rotating sealing component adopts a spring energy storage sealing ring and is used for dynamic sealing between the second bearing lower outer sleeve 601 and the second bearing lower middle sleeve 501.

[0048] Preferably, the first bearing outer sleeve 401 is provided with a first bearing lubrication filling channel 801, which is used to inject lubricating oil into the first bearing 405; the second bearing outer sleeve 602603 is provided with a second bearing lubrication filling channel 802, which is used to inject lubricating oil into the second bearing 604, which facilitates the filling of bearing lubricating oil and improves the service life of the first bearing and the second bearing.

[0049] Preferably, a rib plate 9 is provided between the upper sealing ring 201 and the outer sleeve 602 of the second bearing to improve the local bearing strength; the rib plate is also provided with a lifting hole 901 to facilitate disassembly and maintenance.

[0050] The inner diameter of the first fluid channel 100 and the second fluid channel 200 is 18 inches. This diameter is designed to be larger than the inner diameter of a traditional fluid delivery channel, which can achieve large-flow fluid delivery and improve delivery efficiency.

[0051] Working principle of the present invention:

[0052] After installation, due to the rotor assembly and stator assembly designed in the present invention, when encountering adverse environments such as tides, ocean currents, and strong winds, the rotor assembly can move around the rotor assembly under the driving force generated by the wind and waves of the ship. Since the present invention adopts the above technical solution, the biggest feature of the present invention compared with the traditional single-point slip ring is that the present invention forms two independent fluid delivery channels, which can realize rapid delivery between the ship and the dock, and can realize delivery from the ship to the dock tank, and can also realize delivery from the dock tank to the ship. At the same time, it can also realize one-way delivery from the dock to the ship, and one-way delivery from the ship to the dock. Therefore, the present invention solves the problem that the traditional delivery between the ship and the dock can only be realized after the ship docks are built. There is no need to build a dock, which solves the consideration of the shoreline, water depth and environmental protection issues in the construction of the dock, and greatly reduces the construction cost.

[0053] In addition, the invention provides independent fluid channels, so when different fluids need to be transferred, the fluids will not be mixed, and different fluids can be transferred simultaneously. Therefore, the invention improves the efficiency of fluid transfer by providing dual fluid channels.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-channel single-point mooring liquid slip ring device based on ships and land storage equipment, characterized in that: It comprises a stator assembly and a rotor assembly, wherein the rotor assembly (2) is arranged outside the stator assembly (1) via a first bearing slewing support mechanism and a second bearing slewing support mechanism, and the rotor assembly rotates around the stator assembly and maintains a rotary seal; The stator assembly comprises a hollow central branch pipe (101), the lower end of the central branch pipe is a first fluid inlet flange (103), the upper end of the central branch pipe is a first fluid outlet flange (104), and a first fluid channel (100) is formed from the first fluid inlet flange to the first fluid outlet flange; a lower tube (102) is fixedly welded to the lower part of the central branch pipe, and a second fluid inlet flange (105) is provided on the outer wall of the lower tube; and a rotor assembly (2) is installed on the upper part of the central branch pipe; The rotor assembly (2) comprises an upper cylinder (203), the outer wall of which is provided with a second fluid outlet flange (204); the lower portion of the upper cylinder (203) is mounted on the upper portion of the lower cylinder via a first bearing slewing support mechanism, and the upper portion of the upper cylinder is mounted on the upper portion of the central branch pipe (101) via a second bearing slewing support mechanism; a second fluid channel (200) independent of the first fluid channel inside the central branch pipe is formed between the upper cylinder and the lower cylinder; The first bearing slewing support mechanism comprises a middle cover fixing sleeve (302) welded to the upper end of the lower tube, a middle cover plate (3021) is integrally provided on the outer wall of the lower end of the middle cover fixing sleeve, the middle cover plate is fixedly connected to the single point mooring platform, a first slewing sealing ring (301) is installed on the upper surface of the middle cover plate via fasteners, a first bearing sleeve (401) is installed in the first slewing sealing ring, a slewing gap is provided between the lower end of the first bearing sleeve and the upper surface of the middle cover plate, a first slewing sealing component (3010) abutting against the first bearing sleeve is installed on the inner wall of the first slewing sealing ring; a first bearing (405) is installed between the middle cover fixing sleeve and the first bearing sleeve (401), a first bearing inner upper pressure cover (303) is provided on the upper part of the static ring of the first bearing, and the first bearing inner upper pressure cover is connected to the first bearing sleeve via fasteners. The middle cover fixing sleeve (302) is fixedly connected; a second bearing outer upper pressure cover (404) is provided on the upper part of the moving ring of the first bearing (405); the second bearing outer upper pressure cover is connected to the first bearing outer sleeve (401) via a fastener; a rotary drive ring (406) is welded to the outer wall of the first bearing outer sleeve; a first bearing outer cover (403) is provided on the upper surface of the second bearing outer upper pressure cover (404); the first bearing outer cover is connected to the first bearing outer sleeve (401) via a fastener; the first bearing upper inner cover (402) is connected to the inner ring of the first bearing outer cover (403); the first bearing inner cover (304) is installed on the inner side of the first bearing inner upper pressure cover between the upper end surface of the middle cover fixing sleeve and the first bearing upper inner cover (402); a second rotary sealing component (3040) is provided between the first bearing inner cover (304) and the first bearing upper inner cover; The second bearing rotary support mechanism comprises a second bearing lower inner sleeve (502) welded to the upper end of the central branch pipe, an upper support ring (5021) is provided at the lower end of the second bearing lower inner sleeve (502), a second bearing lower middle sleeve (501) is mounted on the upper support ring, a second bearing lower outer sleeve (601) is sleeved on the outer surface of the second bearing lower middle sleeve, the second bearing lower outer sleeve is connected to the lower end surface of the second bearing middle outer sleeve (602) by a fastener, a third rotary sealing component (6010) is provided between the second bearing lower middle sleeve (501) and the second bearing lower outer sleeve (601); a second bearing upper inner cover (503) is provided on the upper surface of the second bearing lower inner sleeve (502) in the second bearing middle outer sleeve (602); the second bearing middle outer sleeve (602) and the second bearing lower inner sleeve ( 502); a second bearing pressure cover (504) is installed on the upper surface of the flange connection ring (5030) of the second bearing upper inner cover (503); the upper end surface of the second bearing middle outer sleeve (602) is fixedly connected to the second bearing flange upper cover (603) by fasteners; a second rotary sealing ring (6030) is integrally or welded to the lower surface of the inner ring of the second bearing flange upper cover, and a fourth rotary sealing component (6031) is provided between the second rotary sealing ring (6030) and the second bearing upper inner cover (503); an upper sealing ring (201) is welded to the outer circumference at a lower position in the middle of the second bearing middle outer sleeve (602), and the upper sealing ring is fixedly connected to the lower sealing ring (202) at the upper end of the upper cylinder by fasteners, and the lower sealing ring is welded to the upper cylinder.

2. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 1 is characterized in that: A traction ring (407) is provided on the rotary drive ring.

3. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 1 is characterized in that: A sealing gland (7) is installed on the first fluid inlet flange (103), the second fluid inlet flange (105), the second bearing flange upper cover (603) and the upper part of the second fluid outlet flange (204) via fasteners.

4. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 1 is characterized in that: A plurality of reinforcing ribs (1010) are welded between the central branch pipe (101) and the middle cover fixing sleeve (302) along the outer circumference of the central branch pipe, and a second fluid channel (200) is formed between adjacent reinforcing ribs.

5. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 2 is characterized in that: At least one annular groove is provided on the inner surface of the first rotary sealing ring (301), and the first rotary sealing component is installed in the annular groove to realize dynamic sealing between the first rotary sealing ring (301) and the first bearing sleeve (401).

6. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 2 is characterized in that: At least one annular groove is provided on the inner surface of the second rotary sealing ring (6030), and the fourth rotary sealing component (6031) is installed in the annular groove to achieve dynamic sealing between the second rotary sealing ring (6030) and the inner cover (503) on the second bearing.

7. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 1 is characterized in that: At least one annular groove is provided on the inner surface of the second bearing lower outer sleeve (601), and a third rotary sealing component is provided in the annular groove. The third rotary sealing component adopts a spring energy storage sealing ring and is used for dynamic sealing between the second bearing lower outer sleeve (601) and the second bearing lower middle sleeve (501).

8. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 1 or 2, characterized in that: The first bearing outer sleeve (401) is provided with a first bearing lubrication filling channel (801); the second bearing middle sleeve (602) is provided with a second bearing lubrication filling channel (802).

9. The dual-channel single-point mooring liquid slip ring device based on ship and land storage equipment according to claim 1 is characterized in that: A rib plate (9) is provided between the upper sealing ring (201) and the second bearing middle outer sleeve (602); a lifting hole (901) is also provided on the rib plate.

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