KR101608002B1 - Low profile multi-path swivel - Google Patents

Abstract

A low-profile swivel is disclosed. The low-profile swivel, according to an embodiment of the present invention, comprises: a lower body in which multiple lower paths connected to multiple first pipes, respectively, are formed to be engraved in a concentric circle; and an upper body in which multiple upper paths connected to multiple second pipes, respectively, are formed to be engraved in a concentric circle by corresponding to the lower paths. When the upper and lower bodies are coupled to each other, the lower and upper paths meet each other and form multiple path spaces separated from each other, wherein the lower body is coupled to the upper body to be rotated.

Description

Low profile multi-path swivel < RTI ID = 0.0 >

The present invention relates to a low-profile swivel having multiple paths.

Floating production storage and offloading (FPSO) type floating offshore plants are transported from riser pipes through the riser to the storage space. A turret is a structure that serves as a channel for connecting these risers with the offshore plant in place and at the same time rising from the seabed.

At the top of the turret is located a swivel, which is the passage for the fluid to be lifted or lowered through the riser.

The related art is disclosed in Korean Utility Model Publication No. 20-2012-0003251 (Floating Offshore Structure Having Turret), which is installed on a turntable of a turret so as to supply seawater from a seawater suction line mounted on the turret, A swivel for sea water is disclosed.

FIG. 1 is a cross-sectional view of a general swivel block, and FIG. 2 is a view illustrating a swivel stack.

Fluid is allowed to move freely between the turret stationed through the swivel block 1 and the rotating FPSO topside. The first body 10 connected to the turret and the second body 20 connected to the FPSO upper equipment are relatively rotated. In this case also, the fluid passing through the first pipe 40 from the lower part of the first body 10 is guided to the passageway space 30 (see FIG. 1) in which the fluid is always ensured between the first body 10 and the second body 20, To the second body (20) through the second pipe (50).

One swivel block 1 is required as shown in Fig. 1 in order to secure one fluid passage.

In the case of FPSO, since various kinds of fluids are generally to be transferred through different passages, the swivel blocks 1a to 1g as shown in FIG. 1 are vertically stacked to form a swivel stack swivel stack (60).

When the swivel blocks 1a to 1g are stacked in a multi-layer structure as shown in FIG. 2, the overall height of the swivel stack 60 is significantly increased. At this time, the swivel stack 60 is positioned at the top of the turret, and each part of the swivel block has a large acceleration due to the roll motion of the FPOS. As a result, there is a problem that the possibility of occurrence of problems such as deterioration of seal performance and leakage during fluid transportation is increased.

The above-described background technology is technical information that the inventor holds for the derivation of the present invention or acquired in the process of deriving the present invention, and can not necessarily be a known technology disclosed to the general public prior to the filing of the present invention.

Korean Utility Model Publication No. 20-2012-0003251

The present invention provides a low-profile type swivel having a multi-path for reducing the height of the swivel stack by allowing a plurality of fluids to be transferred to one low-profile swivel block, thereby facilitating safety and maintenance in swivel operation.

The swivel diameter is increased as the number of passages for transferring the fluid in the low-profile type swivel block is increased, so that the swivel diameter is increased. And to provide a low-profile swivel having multiple paths capable of responding to an increase in the pressure of the fluid.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided a vacuum cleaner comprising: a lower body in which a plurality of lower passages communicating with a plurality of first pipes are recessed concentrically; And a plurality of upper passages communicating with the plurality of second pipes in a concentric manner corresponding to the plurality of lower passages, wherein the upper body and the lower body are coupled to each other, A lower swivel is provided in which the lower passageway and the plurality of upper passageways meet to form a plurality of passageway spaces isolated from each other, and the lower body is rotatably coupled to the upper body.

A ring-shaped bearing may be interposed in the coupling surface of the lower body and the upper body.

A ring-shaped airtight member may be interposed on the coupling surface of the lower body and the upper body.

The first pipe includes a first vertical pipe disposed in a center hole passing through the center of the lower body and the upper body; A first horizontal tube coupled to the first vertical tube so as to be bent in a horizontal direction and inserted along the inside of the lower body; And a second vertical pipe coupled to the first horizontal pipe so as to be bent in an upward direction and connected to one of the plurality of lower passages.

The second pipe may include a second horizontal pipe disposed horizontally on a circumferential surface of the upper body and a portion of the second pipe inserted into the upper body; And a third vertical pipe coupled to the second horizontal pipe so as to be bent in a downward direction and connected to one of the plurality of upper passages.

The low-profile swivel can be stacked in two or more layers.

Wherein a coupling protrusion is formed in a space between the lower passages on the upper surface of the lower body and a coupling groove is formed in a space between the upper passages of the lower surface of the upper body such that the coupling protrusion is inserted Can be combined.

The coupling protrusion has a T-shaped cross-section, and the coupling groove may have a cross-sectional shape.

The coupling protrusion may have an inverted trapezoidal cross-section having a greater width as the distance from the upper surface of the lower body increases, and the coupling groove may have a trapezoidal cross-section having a smaller width from the bottom surface to the lower surface of the upper body .

At least one of a ring-shaped bearing and a hermetic member may be interposed between the engaging projection and the engaging surface of the engaging groove.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to the embodiment of the present invention, it is possible to transfer a plurality of fluids to one low-profile type swivel block, thereby lowering the height of the swivel stack, thereby providing a multipath for facilitating safety and maintenance in swivel operation.

Further, since the upper and lower portions of the swivel are closely contacted with each other to prevent leakage, the swivel diameter is increased as the number of passages for conveying the fluid in the low-profile type swivel block is increased, It is possible to cope with an increase in the pressure of the gas.

1 is a cross-sectional view of a general swivel block,
Figure 2 shows a swivel stack,
3 is a conceptual diagram of a low-profile swivel having multiple passages according to a first embodiment of the present invention,
Fig. 4 is an enlarged view of a portion of Fig. 3,
FIG. 5 is a conceptual view of the lower body of the low-profile swivel shown in FIG. 3,
6 is a conceptual diagram of a low-profile swivel having multiple passages according to a second embodiment of the present invention,
FIG. 7 is a conceptual view of the lower body of the low-profile swivel shown in FIG. 6,
Figs. 8A and 8B are conceptual views of the upper body of the low-profile swivel shown in Fig. 6,
FIG. 9 is a conceptual diagram of a low-profile swivel having multiple passages according to a third embodiment of the present invention; FIG.
Fig. 10 is an enlarged view of a portion of Fig. 9,
Fig. 11 is a conceptual view of the lower body of the low-profile type swivel shown in Fig. 9,
12 is a conceptual view of the upper body of the low-profile type swivel shown in Fig.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the terms " part, "" module," and the like, which are described in the specification, mean a unit for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 3 is a conceptual diagram of a low-profile swivel having multiple passages according to a first embodiment of the present invention, FIG. 4 is an enlarged view of a portion of FIG. 3, It is a conceptual diagram of the body.

3 to 5 show the low-profile swivel 100, the lower body 110, the upper body 120, the passageway space 130, the lower passageway 132, the upper passageway 134, the coupling protrusions 114, The first pipe 140, the second pipe 150, the center hole 160, the bearing 170, the hermetic member 180, the lower hole 112, and the upper hole 122 are shown have.

The low-pass type swivel 100 having multiple passages according to the first embodiment of the present invention is installed between a manifold of a turret and a topside of a hull in a floating offshore plant such as FPSO, A plurality of passages are provided in the horizontal direction so that the plurality of fluids can be separated and transferred at the same height, thereby lowering the height of the swivel stack, thereby facilitating operational safety and maintenance of the swivel device.

The low-profile swivel 100 according to the first embodiment includes a lower body 110 and an upper body 120.

On the upper surface of the lower body 110, a plurality of lower passages 132 forming the passage space 130 are formed concentrically and differently in diameter. Between the lower passages 132 on the upper surface of the lower body 110, a coupling protrusion 114 for coupling with the upper body 120 is ring-shaped.

On the lower surface of the upper body 120, a plurality of upper passages 134 forming the passage space 130 are formed concentrically and differently in diameter. A coupling groove 124 for engaging with the lower body 110 is formed in a ring shape between the upper passages 134 of the lower surface of the upper body 120.

When the lower body 110 and the upper body 120 are engaged with each other, the coupling protrusion 114 is inserted into the coupling groove 124 to match the coupling positions of the lower body 110 and the upper body 120.

At this time, the lower passages 132 and the upper passages 134 are coaxially arranged, and passages having the same diameter mutually meet to form one passageway space 130. The plurality of passage spaces 130 thus formed are separated from each other, so that the fluid passing through each passage space 130 can be transferred in a state of being isolated from each other.

When the coupling between the lower body 110 and the upper body 120 is completed, the low-profile swivel 100 has a circular disk shape.

A center hole 160 is formed at the center of the low-profile swivel 100 to enable the lower body 110 and the upper body 120 to be secured together in a coupled state. In addition, the lower body 110 and the upper body 120 may be bound together using separate securing means.

A first pipe 140 connected to the manifold of the turret is coupled to the lower body 110 of the low-profile swivel 100, and a second pipe 150 connected to the upper equipment of the hull is coupled to the upper body 120 .

A lower hole 112 is formed in the lower surface of the lower passage 132 so as to communicate with the first pipe 140. An upper hole 122 is formed through the upper surface of the upper passage 134, Can communicate with the pipe (150). That is, the first pipe 140, the lower hole 112, the passage space 130, the upper hole 122, and the second pipe 150 are connected in this order to transfer a predetermined fluid between the manifold and the upper equipment .

In this embodiment, the lower body 110 is rotatable relative to the upper body 120. It is possible to keep the shape of the passage space 130 having the ring shape and to maintain the same shape even if the relative rotation is performed and to continuously connect the first pipe 140 and the second pipe 150, Can be separated.

The bearing 170 may be interposed between the lower body 110 and the upper body 120 so as to enable more smooth rotation. The bearing 170 may have a ring shape concentric with each passage space 130.

The bearing 170 is installed at a position where the upper surface of the coupling protrusion 114 meets the bottom surface of the coupling groove 124 so that the lower body 110 can rotate smoothly with respect to the upper body 120.

Also, in this embodiment, the hermetic member 180 may be interposed between the lower body 110 and the upper body 120. The airtightness member 180 may have a ring shape in a concentric relation with each passage space 130.

The hermetic member 180 is disposed at a position where the side surface of the coupling protrusion 114 and the side surface of the coupling groove 124 meet, a space or an upper passageway 134 between the lower passage 132 and the coupling protrusion 114, To maintain the airtightness of each passageway space 130, thereby preventing the fluid passing through any passageway spaces from passing to the neighboring other passageway spaces.

The number and / or installation of the bearings 170 and / or the hermetic members 180 may vary depending on the size of the swivel block, the characteristics (e.g., temperature, pressure, speed, etc.) . ≪ / RTI >

FIG. 6 is a conceptual view of a low-profile swivel having multiple passages according to a second embodiment of the present invention, FIG. 7 is a conceptual view of a lower body of the low- Fig. 2 is a conceptual diagram of an upper body of a low-profile swivel. Particularly, FIG. 8B shows the inside of the upper body to show the shape of the second pipe.

6 to 8B show the low-profile swivel 200, the lower body 210, the upper body 220, the passage space 230, the lower passage 232, the upper passage 234, the coupling projections 214, The first pipe 240, the second pipe 250, the center hole 260, the bearing 270, the hermetic member 280, the first vertical pipe 242, the second vertical pipe 246 A first horizontal pipe 244, a second horizontal pipe 252, and a third vertical pipe 254 are shown.

The low-profile swivel (200) having multiple passages according to the second embodiment of the present invention can be stacked in a multi-layered structure so that the fluid transport path extends not only in the transverse direction but also in the longitudinal direction.

The low-profile type swivel 200 according to the second embodiment differs from the low-profile type swivel 100 according to the first embodiment in the shape and arrangement of the first pipe 240 and the second pipe 250 Hereinafter, differences will be mainly described.

The first pipe 240 is a tube connected between the manifold of the turret and the lower passage 232 of the lower body 210 to transfer the fluid.

The first pipe 240 has a bent shape twice and communicates with the first vertical pipe 242, the first horizontal pipe 244, and the second vertical pipe 246 in this order.

The first vertical tube 242 is disposed in the center hole 260. This is to prevent interference with the low-profile swivel located at the lower part in the process of stacking the low-profile swivel 200 in a multi-layer structure, so that smooth relative rotation can be achieved.

The first horizontal tube 244 is coupled to the first vertical tube 242 in a bent state in the horizontal direction and is intercalated along the inside of the lower body 210. For this, the lower body 210 may have a gap between the lower surface and the lower surface of the lower passage 232 that is greater than the diameter of the first horizontal tube 244, so that the first horizontal tube 244 can be easily interposed.

An elbow-type pipe joint that connects at right angles between the first horizontal tube 244 and the first horizontal tube 244 and between the first horizontal tube 244 and the second vertical tube 246 can be used to connect the tube have.

Although it has been described that the first horizontal pipe 244 and the second vertical pipe 246 are part of the first pipe 240, this is only an example, and the first horizontal pipe 244 and the second horizontal pipe 246 Needless to say, the vertical tube 246 may be a tunnel-shaped hole formed in the lower body 210.

The second vertical tube 246 is connected to the lower surface of the lower tube 232 by being folded upward relative to the first horizontal tube 244.

The plurality of first horizontal tubes 244 may be radially disposed to prevent the first pipes 240 from interfering with each other.

The second pipe 250 has a first bent shape and communicates with the second horizontal pipe 252 and the third vertical pipe 254 in this order.

The second horizontal pipe 252 is installed horizontally on the peripheral surface of the upper body 220 and a part of the end is inserted into the upper body 220. For this, the distance between the upper surface of the upper body 220 and the upper surface of the upper passage 234 is larger than the diameter of the second horizontal pipe 252, so that the second horizontal pipe 252 can be easily inserted.

The third vertical tube 254 is coupled to the second horizontal tube 252 in a downwardly bent state and connected to the upper surface of the upper tube 234.

An elbow-type pipe joint that connects at right angles to the second horizontal pipe 252 and the third vertical pipe 254 can also be used to connect the pipe.

It is also assumed that a part of the second horizontal pipe 252 in the upper body 220 and the third vertical pipe 254 are part of the second pipe 250. However, It is needless to say that a part of the second horizontal pipe 252 and the third vertical pipe 254 may be a tunnel type hole formed in the upper body 220.

The plurality of second horizontal pipes 252 may be spaced apart from each other by a predetermined distance in the horizontal direction so that the second pipes 250 may not interfere with each other.

In the case of the second pipe 250, the extension of the second horizontal pipe 252 is connected to the inner upper passage 234 so that the extension of the second horizontal pipe 252 is closer to the center of the concentric circle, so that the connection between the second pipe 250 and the upper passage 234 The relationship and its arrangement can be made simple structure.

According to the second embodiment, the first pipe 240 (the first vertical pipe 242, the first horizontal pipe 244, the second vertical pipe 246), the passage space 230, the second pipe 250) (the third horizontal tube 254 and the second horizontal tube 252) in this order so that the transferred fluid can be smoothly conveyed while being isolated from the other passage.

When the diameter of the center hole 260 is increased, it is possible to arrange the first vertical pipes 242 of the plurality of first pipes 240 in the center hole 260, It is possible to realize a low-profile swivel stack of a multi-layer structure in which the swivel 200 is arranged in two or more layers.

FIG. 9 is a conceptual diagram of a low-profile swivel having multiple passages according to a third embodiment of the present invention, FIG. 10 is an enlarged view of a portion of FIG. 9, FIG. 12 is a conceptual view of the upper body of the low-profile type swivel shown in FIG. 9. FIG.

9 to 12 show the low-profile swivel 300, the lower body 310, the upper body 320, the passage space 330, the lower passage 332, the upper passage 334, the coupling projection 314, The groove 324, the first pipe 340, the second pipe 350, the center hole 360, the bearing 370, the hermetic member 380, the lower hole 312, and the upper hole 322 are shown have.

The low-profile swivel 300 having multiple passages according to the third embodiment of the present invention enhances the coupling force between the lower body and the upper body, thereby enabling more stable relative rotation even during high-pressure fluid transportation, It is also possible to secure safety for the operation of the large-diameter swivel having a large diameter.

The low-profile swivel 300 according to the second embodiment differs from the low-profile swivel 100 according to the first embodiment in the shape of the coupling protrusion 314 and the coupling groove 324, I will explain it mainly.

Between the lower passages 332 of the upper surface of the lower body 310, a coupling protrusion 314 for coupling with the upper body 320 is formed in a ring shape. The cross section of the coupling protrusion 314 cut along the diameter of the concentric circle may have a T shape.

Between the upper passages 334 of the lower surface of the upper body 320, a coupling groove 324 for engaging with the lower body 310 is formed in a ring shape. The cross-section of the coupling groove 324 cut along the diameter of the concentric circle may have a "zigzag" shape.

When the coupling protrusion 314 and the coupling groove 324 are coupled with each other, the 'T' shape and the 'ㅗ' shape are engaged with each other, so that the coupling force between the lower body 310 and the upper body 320 can be increased.

A bearing 370 is provided on the coupling surface where the coupling projection 314 and the coupling groove 324 meet, for example, the upper surface of the flange portion of the coupling projection 314 and the flange portion of the coupling projection 314, The lower body 310 and the upper body 320 can be improved in adhesion and rotatability according to the pressure of the fluid.

A space between the coupling protrusion 314 and the lower passage 332 in the upper surface of the lower body 310 and a space between the coupling groove 324 and the upper passage 334 in the lower surface of the upper body 320, A member 380 is provided to maintain the airtightness of the passage space 330.

Further, a maze-like structure is implemented between the adjacent passage spaces 330, so that the transferring fluid can be suppressed from passing to the other passage.

In the case of the low-profile type swivel 300 according to the present embodiment, the coupling protrusion 314 is detachable from the lower body 310 for assembly, and the structure constituting the coupling groove 324 is separated from the upper body 320 It can be possible.

That is, after the structure constituting the engagement groove 324 with respect to the lower body 310 is first arranged, the engagement protrusion 314 is engaged with the lower body 310, It becomes possible to manufacture the low-profile swivel 300 as shown in Fig. Also, it is possible to manufacture the low-profile swivel 300 according to the present embodiment through three-dimensional printing, and a detailed description thereof will be omitted.

In the present embodiment, the cross-sectional shape of the coupling protrusion 314 has an inverted trapezoidal shape having a larger width toward the upper side, and the cross-sectional shape of the coupling groove 324 is a surface (a lower surface of the upper body 320) The trapezoidal shape of which becomes smaller in width, and may be combined with each other.

In this embodiment, the lower body 310 is rotatable relative to the upper body 320, and the lower body 310 and the upper body 320 are excellent in adhesion so that high-pressure fluid can be conveyed.

In the case of a large-diameter swivel having a large number of fluid moving passages, it is important that the upper and lower portions of the swivel come into close contact with each other in accordance with an increase in the pressure of the fluid to be conveyed to prevent water leakage and smooth rotation between the upper and lower portions. 314 and the coupling grooves 324, it is possible to use the large-diameter swivel.

The structure of the first pipe and the second pipe applied in the second embodiment may be applied to the low-profile swivel 300 according to the present embodiment. In this case, stacking in a multilayer structure may be possible.

In the foregoing embodiments, it is assumed that there are three passage spaces. However, this is only an embodiment, and the number of the passage spaces can be increased or decreased according to need, and accordingly, the diameter of the low-profile swivel can also be increased or decreased.

It is also assumed that a coupling protrusion is formed on the lower body and a coupling groove is formed on the upper body. However, the present invention is not limited to this, and may be reversed according to the embodiment.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

100, 200, 300: low-profile type swivel 110, 210, 310:
120, 220, 320: upper body 130, 230, 330: passage space
140, 240, 340: first pipe 150, 250, 350: second pipe
160, 260, 360: center hole 170, 270, 370: bearing
180, 280, 380: sealing member

Claims (9)

A lower body in which a plurality of lower passages communicating with the plurality of first pipes are recessed concentrically; And
And an upper body having a plurality of upper passages communicating with the plurality of second pipes in a concentric manner corresponding to the plurality of lower passages,
Wherein the upper body and the lower body form a plurality of passage spaces in which the plurality of lower passages and the plurality of upper passages meet and are isolated from each other, and the lower body is rotatably coupled to the upper body Low-profile swivel. The method according to claim 1,
And a ring-shaped bearing is interposed on a coupling surface of the lower body and the upper body. The method according to claim 1,
And a ring-shaped airtight member is interposed in the coupling surface of the lower body and the upper body. The method according to claim 1,
The first pipe includes a first vertical pipe disposed in a center hole passing through the center of the lower body and the upper body; A first horizontal tube coupled to the first vertical tube so as to be bent in a horizontal direction and inserted along the inside of the lower body; And a second vertical tube coupled in an upwardly deflected state to the first horizontal tube and connected to one of the plurality of lower passages. 5. The method of claim 4,
The second pipe may include a second horizontal pipe disposed horizontally on a circumferential surface of the upper body and a portion of the second pipe inserted into the upper body; And a third vertical tube coupled in a downwardly biased relation to the second horizontal tube and connected to one of the plurality of upper passages. The method according to claim 1,
Wherein a coupling protrusion is formed in a space between the lower passages on the upper surface of the lower body and a coupling groove is formed in a space between the upper passages of the lower surface of the upper body such that the coupling protrusion is inserted Coupled low swing swivel. The method according to claim 6,
Wherein the engaging projection has a T-shaped cross-section, and the engaging groove has a cross-section of a cross-sectional shape. The method according to claim 6,
Wherein the coupling protrusion has an inverted trapezoidal cross-section having a larger width as the coupling protrusion moves away from the upper surface of the lower body, and the coupling recess has a trapezoidal cross- Swivel. The method according to claim 6,
And at least one of a ring-shaped bearing and a hermetic member is formed between the engaging projection and the engaging surface of the engaging groove.

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