KR20240080117A - Flexible vacuum insulated pipe - Google Patents

Abstract

The present invention relates to flexible vacuum insulated piping. This flexible vacuum insulated pipe is kinematically stable as the joint between the pipe support and the inside and outside of the pipe restrains all displacements, and the pipe support is made of a material with low thermal conductivity and is not subject to direct tensile or shear stress. Therefore, it effectively blocks the inflow of heat from the outside to the inside while maintaining structural robustness. The pre-joined inside of the pipe and the pipe support are covered with the outside of the pipe and then connected in a rotating manner, or all parts are moved in the longitudinal direction, that is, a translation method. In all embodiments, the fastening method is simple, such as fastening with just one, so productivity can be improved in terms of assembly and production.

Description

Flexible vacuum insulated pipe {Flexible vacuum insulated pipe}

The present invention relates to a vacuum piping including a flexible structure, and more specifically, to a vacuum piping including a rotational assembly type support structure, which simplifies the assembly process, provides firm support between the inner pipe and the exterior, and has effective thermal insulation performance. It concerns flexible vacuum piping with a simple process.

Cryogenic liquefied gas (hereinafter referred to as liquefied gas) has a low temperature and low latent heat, so it can be easily vaporized with a small amount of heat input. Therefore, in order to transport liquefied gas, vacuum piping with excellent insulation performance must be used.

Liquefied gas is usually exported/imported through transportation ships and terminals. When loading/unloading liquefied gas between a transport ship and a terminal, displacement of the transport ship occurs due to wind, current, waves, etc. In order to cope with this displacement, transfer is done through a pipe with a rotating part (commonly called a loading arm) or a pipe with a flexible part (commonly called a flexible pipe). Of course, the loading arm or flexible pipe must be insulated to reduce heat transfer.

One of the challenges is that transfer piping for liquefied gases (liquefied hydrogen, liquid neon, liquid helium, etc.) below the air liquefaction temperature (oxygen -183 oC, nitrogen -197 oC) must be vacuum insulated. Otherwise, liquefied air is formed on the surface of the transfer pipe, which reduces insulation performance, and dangerous situations such as fire and explosion occur due to the generation of cryogenic liquid, especially liquefied oxygen. Therefore, flexible vacuum insulated piping must be used for such liquefied gas.

To form a flexible vacuum insulated pipe, a flexible outer pipe and a flexible inner pipe must be constructed. The flexible outer tube and flexible inner tube must each have a flexible part, and the flexible part is usually constructed using a bellows.

Figure 1 is a drawing showing a conventional flexible vacuum insulated pipe, and is excerpted from Korean Patent Registration No. 2428809 ("Vacuum pipe with double bellows portion", July 29, 2022). As shown, the conventional flexible vacuum insulated pipe is manufactured as a double pipe having an inner flexible portion (11') and an outer flexible portion (12'). Additionally, in order to maintain a vacuum insulation space between the inner and outer sides, it has a piping support body 30'.

Since displacement of the inner flexible portion 11' and the outer flexible portion 12' continues to occur depending on the transport environment, it is difficult to position the pipe support 30' between the flexible portions. Therefore, a method of placing a joint having a rigid structure (rigid portion) between the flexible portions and connecting the piping support body 30' to this rigid portion is commonly used. Accordingly, the inner rigid portion 21' is located between the inner flexible portions 11', and the outer rigid portion 22' is located between the outer flexible portions 12'. A pipe support body 30' is located between the inner rigid portion 21' and the outer rigid portion 22' to support the space between the inner pipe and the outer pipe.

A detailed description of the displacement that occurs depending on the transport environment is as follows. In the case of flexible vacuum insulated pipe, it bends during installation and use, and relative movement of the inner flexible portion (11') and the outer flexible portion (12') occurs. When the flexible vacuum insulated pipe is bent, the outer flexible portion 12', which has a larger diameter, has a larger curvature than the inner flexible portion 11', so the pipe support 30' installed between the two pipes is subject to radial tensile and contraction stresses. do. Additionally, the relative movement between the inner flexible portion 11' and the outer flexible portion 12' generates axial shear stress in the pipe support 30'. In order for the pipe support 30' to function even under such stress, the pipe support 30' must be firmly fixed to the inner rigid portion 21' and the outer rigid portion 22'.

In addition, the piping support 30' acts as a medium for heat inflow flowing from the outer pipe to the inner pipe and vaporizes a significant amount of the transported ultra-low temperature liquefied gas. Vaporized gas is not only a loss in terms of liquefied gas itself, but also increases the pressure within the pipe, causing structural problems in the pipe. Therefore, heat inflow through the pipe support 30' must be minimized.

Conventional flexible vacuum insulated piping has a problem in having a structure in which the piping support 30' is firmly fixed to the inner rigid portion 21' and the outer rigid portion 22' while minimizing heat inflow. When the conventional flexible vacuum insulated piping fixes the piping support 30' to the inner rigid part 21' and the outer rigid part 22', it does not have a joint of an appropriate shape, so the piping support 30' has to be firmly fixed. It must be constructed by welding. To enable welding construction, the pipe support 30' must be manufactured from the same type of metal as the inner rigid portion 21' and the outer rigid portion 22'. In this case, a large amount of heat enters the pipe due to the high conduction heat transfer coefficient of the metal.

In order to weaken heat transfer through the pipe support 30', the pipe support 30' must be made of a material such as plastic or wood that has low thermal conductivity compared to metal. In this case, since the materials are different from the inner rigid portion 21' and the outer rigid portion 22', which are usually made of metal, fixation in the form of welding is impossible. In the case of conventional flexible vacuum insulated piping, an appropriate structure has not been devised to connect the piping support 30' to the inner rigid part 21' and the outer rigid part 22', so the welding method is not applied, but adhesive, etc. If the pipe support 30' is fixed in another way, there is a risk that the joint may fall off while the pipe is in use. In addition, materials such as plastic and wood have significantly lower allowable stresses compared to metals for the generated load. Among them, it can withstand compressive stress relatively well, but is very vulnerable to tensile, shear, and bending stress. When designing a flexible vacuum insulated pipe in a conventional form, there is a significant risk that the pipe support (30') will be damaged by tensile, shear, and bending stresses applied to the pipe support (30') depending on the difference in curvature between the inside and outside of the pipe. high.

In addition, in the case of conventional vacuum piping, the piping support 30' is directly joined to the inner rigid part 21' and the outer rigid part 22' from the inside, so the contractor must individually inspect the inside of the piping to perform the joining work. In order for the pipe support 30' to be firmly joined during the joining operation, it is inconvenient to maintain the inner rigid part 21' and the outer rigid part 22' in a perpendicular state during the joining, and the inner rigid part 21' is also inconvenient. Because the cross-sectional area is not very large, the ease of operation is significantly reduced. Therefore, there is a problem in that manufacturing the pipe is difficult and takes a long time using the joint structure of the pipe support body 30' of the conventional vacuum pipe.

Korean Patent Registration No. 2428809 (“Vacuum piping with double bellows section”, 2022.07.29.)

One object of the present invention is to ensure that the piping support is firmly coupled to the inner rigid portion and the outer rigid portion, so that the piping support does not become separated even when the relative displacement of the inner and outer piping occurs, thereby improving the kinematic stability of the flexible vacuum insulated piping.

Another problem of the present invention is that the piping support is made of a material with low thermal conductivity and is structurally designed to receive only compressive stress rather than tension, so that the piping support of the flexible vacuum insulated pipe effectively blocks heat inflow from the outside to the inside while effectively blocking the heat inflow from the outside to the inside. The goal is to maintain structural robustness.

Another object of the present invention is to improve productivity in terms of assembling and manufacturing flexible vacuum insulated piping by making it easy to construct a structure in which the piping support is combined with the inner rigid portion and the outer rigid portion in the vacuum piping.

Another task of the present invention is to minimize relative displacement through matching the shapes of the inner flexible portion and the outer flexible portion, thereby also minimizing the displacement occurring in the pipe support.

The object of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The flexible vacuum insulated pipe 1000 of the present invention for achieving the above-described object includes an inner flexible portion 110 that extends in the longitudinal direction and includes a flexible structure capable of changing shape; An inner rigid portion 120 formed in a cylindrical shape and joined to the inner flexible portion 110 in the longitudinal direction; An inner pipe (100) including a combination of a plurality of the inner flexible portions (110) and the inner rigid portions (120) alternately coupled together; It extends in the longitudinal direction, includes a flexible structure capable of changing shape, and is spaced apart from the inner flexible portion 110 by a predetermined distance in the radial direction to accommodate the inner flexible portion 110 and provide a space between the inner flexible portion 110 and the inner flexible portion 110. An outer flexible portion 210 forming an insulating space (V); It is formed in a cylindrical shape and is spaced apart from the inner rigid portion 120 by a predetermined distance in the radial direction, accommodates the inner rigid portion 120, and forms an insulating space V between the inner rigid portion 120 and the outer flexible portion ( An outer rigid portion 220 joined to the longitudinal direction 210); An outer pipe 200 including a combination of a plurality of the outer flexible portions 210 and the outer rigid portions 220 alternately coupled together; A pipe support body 300 that is joined to both the inner rigid portion 120 and the outer rigid portion 220 to restrict the relative displacement of the inner pipe 100 and the outer pipe 200 and at the same time structurally support it; may include.

At this time, in the flexible vacuum insulated pipe 1000, the inner rigid portion 120 and the outer rigid portion 220 are formed of a metallic material, and the piping support 300 has a relatively low conduction heat transfer coefficient compared to the metallic material. It can be formed from materials.

In addition, the flexible vacuum insulated pipe 1000 includes an inner body portion 121 in which the inner rigid portion 120 is formed in a cylindrical shape and is joined to the inner flexible portion 110 in the longitudinal direction. ) is formed at both ends in the longitudinal direction and includes an inner connection part 122 formed as a gently curved surface to be connected to the inner flexible part 110, and the outer rigid part 220 is formed in a cylindrical shape and the inner rigid part ( 120 and an outer body portion 221 that is spaced a predetermined distance in the radial direction and is joined to the outer flexible portion 210 in the longitudinal direction, and is formed at both ends of the outer body portion 221 in the longitudinal direction, and the outer flexible portion 210 ) may include an outer connection portion 222 formed as a gently curved surface to be connected to the.

In addition, the flexible vacuum insulated pipe 1000 has a support structure formed in the inner rigid part 120 and the outer rigid part 220 to support the piping support 300, and the piping support 300 has the support structure. It can be formed in a form corresponding to .

In the first embodiment, the flexible vacuum insulated pipe 1000 has the inner rigid portion 120, an inner reinforcing frame ( 123), and the outer rigid portion 220 may include an outer reinforcing frame 223 that supports the inner reinforcing frame 123 and the pipe support 300.

In addition, in the flexible vacuum insulated pipe 1000, the pipe support 300 is formed from a support frame 311 in the form of a border fitted around the entire outer surface of the inner body portion 121 and the support frame 311. It may include a plurality of support wings 312 that protrude in the radial direction and are arranged radially.

In addition, the flexible vacuum insulated pipe 1000 has a plurality of outer reinforcing frames 223, which extend in the circumferential direction and protrude in the radial direction over the inner surface of the outer main body 221, so that the support wings 312 ) can be arranged radially in a position corresponding to

In addition, the flexible vacuum insulated pipe 1000 has a pair of pipe supports 300 coupled to one side and the other side of the inner reinforcing frame 123, thereby forming a pair of support wings 312 facing each other. They are coupled so that the inner reinforcing frame 123 is interposed between them, and each of the outer reinforcing frames 223 is formed in the form of a pair of parallel ribs facing each other, forming a pair of the support wings 312. And the combination of the inner reinforcing frame 123 interposed therebetween may be coupled so as to be interposed between the pair of ribs.

In addition, the flexible vacuum insulated pipe 1000 is a combination of a pair of the pipe support body 300 and the inner body portion 121, and the support wing portion 312 and the outer reinforcing frame 223 are misaligned with each other. In the position, it moves in the longitudinal direction coaxially with the outer body portion 221 and is accommodated within the outer body portion 221, and the pair of pipe supports 300 and the inner body portion 121 are combined. , the combination of the pair of support wings 312 and the inner reinforcing frame 123 interposed between them constitutes the outer reinforcing frame 223 by rotating while accommodated in the outer main body 221. By being interposed between a pair of ribs, a pair of pipe supports 300, the inner body 121, and the outer body 221 can be coupled to each other.

In addition, the flexible vacuum insulated pipe 1000 simultaneously penetrates the pair of support wings 312 and fastens them to each other when the pair of pipe supports 300 and the inner body portion 121 are coupled to each other. A fastening pin 124 may be provided.

In addition, when the flexible vacuum insulated pipe 1000 is coupled between the pair of the piping supports 300, the inner body portion 121, and the outer body portion 221, the flexible vacuum insulated pipe 1000 rotates excessively or rotates in the opposite direction after coupling by rotation. To prevent release due to rotation, an outer fastening pin 223 may be provided that simultaneously penetrates a pair of ribs constituting the outer reinforcing frame 223 and fastens them to each other.

In addition, the flexible vacuum insulated pipe 1000 has a blocking wall formed in the engaging rotation direction of the outer reinforcing frame 223 to regulate excessive rotation, and a blocking wall is formed in the release rotation direction of the outer reinforcing frame 223 before engaging rotation. The outer fastening pin 223 may be provided to allow rotation in this direction but to regulate rotation in the release rotation direction after engagement.

Additionally, in the flexible vacuum insulated pipe 1000, the blocking wall may be formed integrally with the outer reinforcing frame 223 or may be formed to be detachable.

Additionally, in the flexible vacuum insulated pipe 1000, the outer diameter of the inner reinforcing frame 123 may be formed to be the same as or smaller than the inner diameter of the outer reinforcing frame 223.

As a second embodiment, the flexible vacuum insulated pipe 1000 has the inner rigid portion 120 protruding in the radial direction in the form of a rib extending longitudinally across the outer surface of the inner body portion 121 and forming a radial shape. It may include a plurality of inner reinforcing plates 125 disposed, and the outer rigid portion 220 may include an outer reinforcing plate 225 supporting the inner reinforcing plate 125 and the piping support 300. there is.

At this time, the flexible vacuum insulated pipe 1000 includes a plurality of pipe supports 300, a support block portion 321 corresponding to the inner reinforcement plate 125 and extending in the longitudinal direction, and the support block portion 321. ) may include a support slot portion 322 formed in the shape of a groove extending in the longitudinal direction on the support block portion 321 so as to be fitted into the inner reinforcement plate 125.

In addition, the flexible vacuum insulated pipe 1000 has a plurality of outer reinforcing plates 225 extending in the longitudinal direction and protruding in the radial direction over the inner surface of the outer main body 221, so that the inner reinforcing plates 125 ) can be arranged radially in a position corresponding to

In addition, the flexible vacuum insulated pipe 1000 has a plurality of pipe supports 300, and the support block portion 321 moves in the longitudinal direction so that the inner reinforcing plate 125 is connected to the support slot portion 322. By fitting, the plurality of support block portions 321 and the inner reinforcing plate 125 are coupled to each other, and each of the outer reinforcing plates 225 is formed in the form of a pair of parallel ribs facing each other. , the combination of each of the support block portions 321 and the inner reinforcement plate 125 may be coupled so as to be interposed between each pair of ribs.

In addition, the flexible vacuum insulated pipe 1000 is a combination of the support block portion 321 and the inner reinforcing plate 125, and the inner reinforcing plate 125 and the outer reinforcing plate 225 correspond to each other. In the state, it moves in the longitudinal direction coaxially with the outer body portion 221 and is accommodated in the outer body portion 221, and at the same time, the combination of the support block portion 321 and the inner reinforcement plate 125 is, By being interposed between a pair of ribs constituting the outer reinforcement plate 225, the plurality of pipe supports 300, the inner body portion 121, and the outer body portion 221 can be coupled to each other.

In addition, when the flexible vacuum insulated pipe 1000 is coupled between the plurality of piping supports 300, the inner body portion 121, and the outer body portion 221, the flexible vacuum insulated pipe 1000 moves excessively or reverses after coupling by longitudinal movement. An outer stopper 226 may be provided to block a space between a pair of ribs constituting the outer reinforcement plate 225 to prevent release due to longitudinal movement.

In addition, the flexible vacuum insulated pipe 1000 has a blocking wall formed in the direction of engagement movement of the outer reinforcement plate 225 to regulate excessive movement, and a blocking wall is formed in the direction of release movement of the outer reinforcement plate 225 before engagement. The outer stopper 226 may be provided to allow movement in this direction but to regulate movement in the release movement direction after engagement.

Additionally, in the flexible vacuum insulated pipe 1000, the blocking wall may be formed integrally with the outer reinforcement plate 225 or may be formed to be detachable.

Additionally, in the flexible vacuum insulated pipe 1000, the length of the inner reinforcing plate 125 may be formed to be smaller than the length of the outer reinforcing plate 225.

In addition, in the flexible vacuum insulated pipe 1000, the inner pipe 100 is alternately coupled with a plurality of the inner flexible portions 110 and the inner rigid portion 120, and the inner flexible portions 110 are disposed at both ends. and the outer pipe 200 is formed such that a plurality of the outer flexible portions 210 and the outer rigid portions 220 are alternately coupled and the outer flexible portions 210 are disposed at both ends, and the flexible vacuum The insulated pipe 1000 includes an internal connection portion 410 coupled to the ends of the inner flexible portion 110 at both ends of the inner pipe 100; An external connection portion 420 coupled to the ends of the outer flexible portion 210 at both ends of the outer pipe 200; An end connection part 430 connected to an external device by connecting the internal connection part 410 and the external connection part 420 to each other; may include.

In addition, the flexible vacuum insulation pipe 1000 is connected to a vacuum pump to exhaust air to form a vacuum state in the insulation space V, and includes a vacuum exhaust port 500 that serves as a seal after securing the vacuum; may include.

According to a means of solving the problem of the present invention described above, the flexible vacuum insulated pipe according to the present invention is flexible vacuum insulated by firmly supporting the pipe support using a reinforcing frame or reinforcing plate provided separately in the outer rigid portion and the inner rigid portion. It provides the effect of improving the mechanical stability of piping. More specifically, in the first embodiment of using the reinforcing frame, the reinforcing frame of the inner rigid part and the reinforcing frame of the outer rigid part that are in face-to-face contact with one side and the other pipe support are joined face-to-face by the fastening part of the pipe support. Longitudinal and radial displacements are stably supported by, and rotational displacements are stably supported by fastening pins or blocking walls of the outer rigid portion that restrain rotational displacements at the edges of the smooth surfaces of the pipe supports on one side and the other, respectively. In the second embodiment using a reinforcing plate, the coupling between the reinforcing plate of the inner rigid portion and the slot portion of the pipe support also uses longitudinal movement (translation), and the coupling between the block portion of the piping support and the reinforcing plate of the outer rigid portion is also length. It is designed to use directional movement (translation), so it is structurally in a form that does not cause rotational displacement, and at the same time, stable support in the rotational and radial directions is possible by assembling each part in the radial direction. In addition, longitudinal displacement is also stably supported by the outer rigid stopper or blocking wall that regulates excessive movement in the longitudinal direction or movement in the opposite direction.

In addition, the pipe support is made of materials such as high-pressure glass fiber or polymer with low thermal conductivity instead of metal, and in all embodiments, the outer rigid portion reinforcement frame (first embodiment)/reinforcement plate (second embodiment) and the inner rigid portion are reinforced. The frame/reinforcement plate supports the outer surface of the pipe support, and the outer rigid portion reinforcement frame/reinforcement plate extends radially from the outer rigid portion to a portion fairly close to the inner rigid portion (first embodiment) or further (second embodiment) to the inner rigid portion. It has an assembly structure that covers the stiffening frame in the longitudinal direction. Therefore, in all embodiments, the pipe support only responds to compressive stress for various displacements of the pipe, and the reinforcing frame/reinforcement plate of the inner and outer rigid portions is made of metal material and is made of metal material to withstand tensile and shear stresses. , The piping support of flexible vacuum insulated pipe effectively blocks heat inflow from the outside to the inside while maintaining structural robustness.

In addition, in the case of the first embodiment, one side and the other pipe support are previously coupled to the inner rigid portion reinforcing frame through the pipe support fastener, and then, when connecting the inner/outer pipes, the one side and the other pipe support and the outer rigid portion reinforcing frame are prevented from engaging with each other. After covering the pipe outside the inner pipe, one side and the other pipe support are rotated in a position where they are on the same radial line with the outer rigid portion reinforcement frame until just before they touch the outer rigid portion reinforcement frame blocking wall, and the outer rigid portion is rotated. Piping assembly is accomplished by inserting the fastening part into the reinforcement frame of the outer rigid part. In addition, in the case of the second embodiment, when connecting the inner and outer pipes, the inner reinforcing plate in the form of a protruding wall - the outer reinforcing plate in the form of a pair of protruding ribs, which is in the form of a block and has a slot, are connected to each other only by longitudinal movement (translation). Piping assembly is accomplished by assembling a stopper that restricts excessive or countermovement in the longitudinal direction only. That is, according to the present invention, in all embodiments, piping is assembled using only simple rotation/translation movements, so assembly and manufacturing are easier than conventional flexible vacuum insulated piping, providing the effect of improving productivity.

Figure 1 shows a conventional flexible vacuum insulated pipe.
Figure 2 is a flexible vacuum insulated pipe of the present invention.
Figure 3 shows the assembly process of the first embodiment of the pipe joint and pipe support structure of the flexible vacuum insulated pipe of the present invention.
Figure 4 is an exploded perspective view of the first embodiment of the pipe joint and pipe support structure of the flexible vacuum insulated pipe of the present invention.
Figure 5 is a longitudinal cross-sectional view of the first embodiment of the pipe joint and pipe support structure of the flexible vacuum insulated pipe of the present invention.
Figure 6 shows the assembly process of the second embodiment of the pipe joint and pipe support structure of the flexible vacuum insulated pipe of the present invention.
Figure 7 is an exploded perspective view of the second embodiment of the pipe joint and pipe support structure of the flexible vacuum insulated pipe of the present invention.
Figure 8 is a radial side cross-sectional view of the second embodiment of the pipe joint and pipe support coupling structure of the flexible vacuum insulated pipe of the present invention.
Figure 9 shows the response to the gravity field of the flexible vacuum insulated pipe of the present invention.
Figure 10 shows the response to horizontal variation of the flexible vacuum insulated pipe of the present invention.
Figure 11 corresponds to the vertical variation of the flexible vacuum insulated pipe of the present invention.
Figure 12 corresponds to the left and right variations of the flexible vacuum insulated pipe of the present invention.

Hereinafter, the flexible vacuum insulated pipe according to the present invention having the above-described configuration will be described in detail with reference to the attached drawings.

[1] Overall configuration of flexible vacuum insulated piping of the present invention

Figure 2 shows the overall configuration of the flexible vacuum insulated pipe of the present invention. The overall shape of the flexible vacuum insulated pipe 1000 of the present invention is shown at the top of the drawing, and in the middle of the drawing, a portion of one end of the flexible vacuum insulated pipe 1000 of the present invention is enlarged and visible to the inside. In addition, each part is shown at the bottom of the drawing, through which the overall configuration of the flexible vacuum insulated pipe 1000 of the present invention is explained.

As shown in Figure 2, the flexible vacuum insulated pipe 1000 of the present invention includes an inner piping 100 including an inner flexible portion 110 and an inner rigid portion 120, an outer flexible portion 210, and an outer rigid portion. It includes an outer pipe 200 including (220), and a pipe support body 300 provided between the rigid parts to limit the relative displacement of the pipes on both sides and at the same time structurally support it. Additionally, it may include an internal connection part 410, an external connection part 420, and an end connection part 430 for connection to an external device, and a vacuum exhaust port 500 for connection to a vacuum pump.

As shown, the inner pipe 100 is formed in the form of a combination in which a plurality of the inner flexible portions 110 and the inner rigid portions 120 are alternately combined. At this time, of course, the inner flexible portion 110 is disposed at both ends, that is, [inner flexible portion, inner rigid portion -... - Medial rigidity ?? It should be composed in the form of a [medial flexible area].

The inner flexible portion 110 extends in the longitudinal direction and includes a flexible structure capable of changing shape. For example, it may have a morphologically flexible structure such as a corrugated pipe, and may also have a materially flexible structure by being made of a material capable of elastic deformation, allowing for various applications. The inner flexible portion 110 is formed to withstand static/dynamic pressure and thermal contraction/expansion caused by the fluid flowing inside, while preventing fluid from leaking, and also to be robust against movement between supply/demand points.

The inner rigid portion 120 is provided between the pair of inner flexible portions 110 to form a pipe joint to enable the pipe support 300 to be provided, and is formed in a cylindrical shape. It is joined to the inner flexible portion 110 in the longitudinal direction. More specifically, the inner rigid portion 120 is formed in a cylindrical shape and is located at both ends of the inner body portion 121 in the longitudinal direction and joined to the inner flexible portion 110 in the longitudinal direction. It is formed and may include an inner connection portion 122 formed with a gently curved surface to be connected to the inner flexible portion 110. The inner rigid portion 120 is formed to withstand the static/dynamic pressure caused by the fluid flowing therein and at the same time have the rigidity to prevent fluid from leaking.

The outer pipe 200, like the inner pipe 100, is formed in the form of a combination in which a plurality of the outer flexible portions 210 and the outer rigid portions 220 are alternately combined as shown. At this time, as before, the outer flexible portion 210 is disposed at both ends, that is, [outer flexible portion ?? Outer rigidity - … - Outer rigidity ?? It should be composed in the form of [outer flexible part].

The outer flexible portion 210 extends in the longitudinal direction and includes a flexible structure capable of changing shape. For example, it may have a morphologically flexible structure such as a corrugated pipe, and may also have a materially flexible structure by being made of a material capable of elastic deformation, allowing for various applications. In addition, the outer flexible portion 210 is formed to accommodate the inner flexible portion 110 while being spaced apart from the inner flexible portion 110 by a predetermined distance in the radial direction. Accordingly, the outer flexible portion 210 forms an insulating space V between the inner flexible portion 110 and the inner flexible portion 110 . The outer flexible portion 210 must be designed to have the same curvature as the inner flexible portion 110, and is formed so as to not leak vacuum and at the same time have the rigidity to withstand external pressure (atmospheric pressure).

The outer rigid portion 220 is provided between the pair of outer flexible portions 210 to form a pipe joint to enable the pipe support 300 to be provided, and is formed in a cylindrical shape. and is joined to the outer flexible portion 210 in the longitudinal direction. More specifically, the outer rigid portion 220 is formed in a cylindrical shape and is located at both ends of the outer body portion 221 in the longitudinal direction and joined to the outer flexible portion 210 in the longitudinal direction. It is formed and may include an outer connection portion 222 formed with a gently curved surface to be connected to the outer flexible portion 210. In addition, the outer rigid portion 220, like the outer flexible portion 210, is spaced apart from the inner rigid portion 120 by a predetermined distance in the radial direction and accommodates the inner rigid portion 120 to form a space between the inner rigid portion 120 and the inner rigid portion 120. An insulating space (V) is formed. The outer rigid portion 220 is formed so as to not leak vacuum and to have the rigidity to withstand external pressure (atmospheric pressure).

The pipe support 300 is joined to both the inner rigid portion 120 and the outer rigid portion 220 to restrict the relative displacement of the inner pipe 100 and the outer pipe 200 and at the same time structurally support it. It plays a role. Figure 2 shows an example of the pipe support 300, but of course, the present invention is not limited thereto. A support structure for supporting the pipe support 300 is formed in the inner rigid portion 120 and the outer rigid portion 220, and the pipe support 300 is formed in a shape corresponding to the support structure. Specific forms of the pipe support 300 according to various embodiments will be described in more detail later.

Meanwhile, the inner rigid portion 120 and the outer rigid portion 220 are formed of a sturdy metal material to increase the structural stability of the flexible vacuum insulated pipe 1000 itself. At this time, the piping support 300 is preferably made of a material with a relatively low conduction heat transfer coefficient compared to a metal material. For example, it may be made of a material such as high-pressure glass fiber or polymer. As previously explained, in the past, heat inflow occurs due to heat transfer by components that connect the external pipe/internal pipe, such as the pipe support 300, so that the cryogenic liquid moving through the pipe is vaporized and lost. There was a problem. However, in the present invention, this problem can be greatly alleviated by making the pipe support 300 made of a material with a low conduction heat transfer coefficient.

The internal connection part 410 is a part that is coupled to the ends of the inner flexible part 110 at both ends of the inner pipe 100 for connection to an external device. It is firmly formed to withstand dynamic pressure and prevent leakage. The external connection part 420 is a part that is coupled to the ends of the outer flexible part 210 at both ends of the outer pipe 200 for connection to an external device, and can withstand external pressure (atmospheric pressure) without leaking vacuum. It is also firmly formed so that it can be used. In addition, the terminal connection part 430 serves to connect the internal connection part 410 and the external connection part 420 to each other and directly connect to an external device.

The vacuum exhaust port 500 is a component connected to a vacuum pump to exhaust air to create a vacuum state in the insulation space (V). Of course, the vacuum exhaust port 500 is blocked after securing the vacuum in the insulation space (V) and plays a sealing role.

[2] First embodiment of the pipe joint and pipe support structure of the flexible vacuum insulated pipe of the present invention

Figures 3 to 5 are views for explaining the first embodiment of the pipe joint and pipe support coupling structure of the flexible vacuum insulated pipe of the present invention. Figure 3 shows the assembly process of the first embodiment of the pipe joint and pipe support coupling structure of the flexible vacuum insulated pipe of the present invention, Figure 4 is an exploded perspective view of the first embodiment, and Figure 5 is a longitudinal view of the first embodiment. A side cross-sectional view is shown, respectively.

In the first embodiment, the inner rigid portion 120 includes an inner reinforcing frame 123 that protrudes in the radial direction in the form of a flange over the entire outer circumference of the inner body portion 121, and the outer rigid portion ( 220 is formed to include the inner reinforcing frame 123 and the outer reinforcing frame 223 supporting the pipe support 300.

At this time, the piping support body 300 conforms to the shape of the inner reinforcing frame 123 and the outer reinforcing body 223, so that the piping support body 300 is formed around the entire outer surface of the inner body portion 121. It is formed in a form that includes a support border 311 in the form of an inserted border and a plurality of support wings 312 that protrude in the radial direction from the support border 311 and are arranged radially. The outer reinforcing frame 223, as well as the inner reinforcing frame 123, corresponds to the shape of the pipe support 300, and a plurality of the outer reinforcing frames 223 extend in the circumferential direction and extend to the outer side. It is formed to protrude in the radial direction over the inner surface of the main body portion 221 and is radially disposed at a position corresponding to the support wing portion 312.

Referring to FIG. 3, the joining process between the pair of pipe supports 300, the inner body 121, and the outer body 221 of this shape will be described in detail as follows.

First, as described above and as shown in the first process drawing of FIG. 3, the inner reinforcing frame 123 is formed to protrude in the radial direction in the form of a flange over the entire outer circumference of the inner body portion 121. In this state, as shown in the second process drawing of FIG. 3, a pair of the pipe supports 300 are coupled to one side and the other side of the inner reinforcing frame 123 (in the reference numerals, one side pipe) The support was marked as 300, and the pipe support on the other side was marked as 300'. Then, the inner reinforcing frame 123 is coupled so that it is interposed between the pair of support wings 312 facing each other. At this time, if the inside of the support wing portion 312 is formed as a simple plane, the support wing portion 312 is deformed due to the thickness of the inner reinforcing frame 123, causing problems such as stress concentration. . The inside of the support wing portion 312 is formed in a grooved shape to form a space that can accommodate the inner reinforcing frame 123. At this time, the height of the chin should naturally be 1/2 of the thickness of the inner reinforcing frame 123, and then when the pair of support wings 312 are facing each other and combined, the space created by the chin is just the inner reinforcing frame ( 123) The thickness allows the joint structure to be formed firmly.

In this way, when a pair of the pipe supports 300 and the inner body portion 121 are coupled, an inner fastening pin 124 is provided that simultaneously penetrates the pair of support wing portions 312 and fastens them to each other. desirable. The inner fastening pin 124 is preferably provided in each of the plurality of support wing parts 312 as shown, and in the drawing, one inner fastening pin per one support wing part 312 ( 124) is shown as being provided, but of course this does not limit the present invention, and it is natural that a plurality of them may be provided as needed. In addition, in the drawing, an example is shown in which one inner fastening pin 124 is provided per one support wing part 312. In this case, it is disposed biased at the radial outer end of the support wing part 312. By doing so, the stability of the bonding structure can be maximized.

After the piping support 300 and the inner body 121 are joined through this process, they must now be joined to the outer body 221. Each of the outer reinforcing frames 223 is formed in the form of a pair of parallel ribs facing each other, as shown. Finally, the combination of the pair of support wings 312 and the inner reinforcing frame 123 sandwiched between them can be combined so that they are interposed between a pair of ribs constituting the outer reinforcing frame 223. . The combining process is explained in detail as follows.

As previously explained, the outer reinforcing frame 223 is radially disposed at a position corresponding to the support wing portion 312. That is, the internal space of the outer main body 221 has a plurality of outer reinforcing frames 223 arranged sparsely and an empty space is formed between them.

As shown in the third process drawing of FIG. 3, first, a combination of a pair of the pipe support body 300 and the inner body portion 121, the support wing portion 312 and the outer reinforcing frame 223 ) are moved in the longitudinal direction coaxially with the outer body portion 221 in a position where they are offset from each other and are accommodated within the outer body portion 221. In this way, as shown in the fourth process drawing of FIG. 3, each of the support wing parts 312 is arranged between the outer reinforcing frames 223 in the inner space of the outer main body 221. do.

Meanwhile, at this time, if the outer diameter of the inner reinforcing frame 123 is too large, it interferes with the outer reinforcing frame 223, making it impossible to move longitudinally to a position where it can be combined. To solve this problem, the outer diameter of the inner reinforcing frame 123 just needs to be smaller than the inner diameter of the outer reinforcing frame 223. However, from another perspective, considering that a combination structure in which the inner reinforcing frame 123 is held by the pair of support wings 312 is inserted and supported by the outer reinforcing frame 223, the inner reinforcing frame 123 is supported by the outer reinforcing frame 223. If the outer diameter of the reinforcing frame 123 is too small, there is a risk that the coupling force with the support wing portion 312 may decrease. Considering this, the larger the outer diameter of the inner reinforcing frame 123, the more advantageous. That is, the inner reinforcing frame 123 is preferably enlarged as much as possible to increase the coupling force with the support wing portion 312, but it is appropriate to have an outer diameter that does not interfere with the outer reinforcing frame 223. Specifically, it is preferable that the outer diameter of the inner reinforcing frame 123 is the same as or slightly smaller than the inner diameter of the outer reinforcing frame 223.

In this state, as indicated by the arrow in the fourth process drawing of FIG. 3, the combination of the pair of the pipe support body 300 and the inner body portion 121 is accommodated in the outer body portion 221. It rotates. Then, the combination of the pair of support wings 312 and the inner reinforcing frame 123 sandwiched between them can be naturally interposed between the pair of ribs constituting the outer reinforcing frame 223.

In this way, rotational movement is used when coupling between a pair of the pipe support body 300, the inner body portion 121, and the outer body portion 221, and at this time, when the pair rotates excessively or rotates in the opposite direction, the coupling occurs. There is a risk that this will be lifted. In order to prevent release due to excessive rotation or rotation in the opposite direction after coupling by rotation, as shown in the fifth process drawing of FIG. 3, a pair of ribs constituting the outer reinforcing frame 223 are simultaneously penetrated. Thus, outer fastening pins 223 for fastening each other are provided.

At this time, the outer fastening pin 223 may be provided in both the rotation direction for engagement (i.e., engagement rotation direction) and the rotation direction for release (i.e., release rotation direction). However, it is natural that the combined rotation direction should be blocked from the beginning to prevent excessive rotation, and the structure does not need to be changed. In consideration of this, the outer fastening pin 223 is provided in the release rotation direction of the outer reinforcing frame 223 to allow rotation in the engagement rotation direction before engagement, but to regulate rotation in the release rotation direction after engagement. On the other hand, a blocking wall may be formed in the combined rotation direction of the outer reinforcing frame 223 to regulate excessive rotation (not shown in the drawing to simplify the drawing). At this time, the blocking wall may be formed integrally with the outer reinforcing frame 223 or may be formed to be detachable.

An exploded perspective view of the pipe joint that has been assembled through the above-described process is shown in Figure 4, and a longitudinal cross-sectional view is shown in Figure 5. In the assembled state, the pipe joint forms a combination in which the inner reinforcement frame 123 is sandwiched between a pair of the support wings 312, and this combination is the outer reinforcement frame (in the form of a pair of ribs). By fitting into (223), in summary, coupling between the inner rigid portion 110 and the outer rigid portion 120 is achieved through the pipe support 300. At this time, as can be seen in FIGS. 4 and 5, the inner rigid portion 110 and the outer rigid portion 120 do not directly contact each other. Accordingly, even if heat flows in, it must pass through the piping support 300 on the heat transfer path. As described above, the piping support 300 is made of high-pressure glass fiber, polymer, etc., whose conductive heat transfer coefficient is much lower than that of metal. Because it is formed, the amount of heat input can be effectively reduced.

Meanwhile, in Figure 5, the direction of the force applied to the pipe support 300 is indicated by an arrow. The pipe support body 300 is supported by the inner reinforcing frame 123 and the outer reinforcing frame 223 made of a material with higher strength than itself. Therefore, when the inner rigid portion 110 and the outer rigid portion 120 receive external force such as tension, compression, or bending, actual stress, including tension and shear, is applied to the inner stiffener frame 123 and the outer stiffener frame 223. is withstood, and only compressive force acts on the pipe support 300. Accordingly, the risk of damage to the pipe support 300 can be reduced while the robustness of the pipe joint can be improved.

[3] Second embodiment of the pipe joint and pipe support connection structure of the flexible vacuum insulated pipe of the present invention

Figures 6 to 8 are views for explaining a second embodiment of the pipe joint and pipe support coupling structure of the flexible vacuum insulated pipe of the present invention. Figure 6 shows the assembly process of the second embodiment of the pipe joint and pipe support coupling structure of the flexible vacuum insulated pipe of the present invention, Figure 7 is an exploded perspective view of the second embodiment, and Figure 8 is a radial direction view of the second embodiment. A side cross-sectional view is shown, respectively.

In the second embodiment, the inner rigid portion 120 is formed in the form of a rib extending longitudinally across the outer surface of the inner body portion 121 and protrudes in the radial direction and includes a plurality of inner reinforcing plates 125 arranged radially. ) and the outer rigid portion 220 is formed to include the inner reinforcing plate 125 and the outer reinforcing plate 225 supporting the pipe support 300.

At this time, the piping support 300 matches the shape of the inner reinforcing plate 125 and the outer reinforcing plate 225, and a plurality of the piping supports 300 correspond to the inner reinforcing plate 125. A support block portion 321 extending in the longitudinal direction is formed in the form of a groove extending in the longitudinal direction on the support block portion 321 so that the support block portion 321 is fitted into the inner reinforcement plate 125. It is formed in a form including a support slot portion 322. The outer reinforcing plate 225, as well as the inner reinforcing plate 125, corresponds to the shape of the pipe support 300, and a plurality of the outer reinforcing plates 225 extend in the longitudinal direction and extend to the outer side of the outer reinforcing plate 225. It is formed to protrude in the radial direction over the inner surface of the main body portion 221 and is radially disposed at a position corresponding to the inner reinforcing plate 125.

Referring to FIG. 6, the joining process between the plurality of pipe supports 300, the inner body 121, and the outer body 221 of this shape will be described in detail as follows.

First, as described above and as shown in the first process drawing of FIG. 6, the inner reinforcement plate 125 is in the form of a rib extending longitudinally across the outer surface of the inner body portion 121 in the radial direction. It is protruding and arranged radially. In this state, as shown in the second process drawing of FIG. 6, the plurality of pipe supports 300, the support block portion 321 moves in the longitudinal direction, and the inner reinforcement plate 125 moves into the support slot. It is inserted into part 322. In this way, the plurality of support block parts 321 and the inner reinforcement plate 125 are coupled to each other. In the first embodiment above, a separate fastening pin was provided to solidify the connection between the pipe support and the inner body in this state, but in the second embodiment, once the connection to the outer body, which will be described later, is completed, the connection is made by itself. Because structural stability is ensured, separate fastening pins, etc. are not necessary at this stage.

After the piping support 300 and the inner body 121 are joined through this process, they must now be joined to the outer body 221. Each of the outer reinforcement plates 225 is formed in the form of a pair of parallel ribs facing each other, as shown. Finally, the combination of each of the support block portions 321 and the inner reinforcing plate 125 can be combined so that it is sandwiched between a pair of ribs constituting each of the outer reinforcing plates 225. The combining process is explained in detail as follows.

As shown in the third process drawing of FIG. 6, the combination of the support block portion 321 and the inner reinforcing plate 125 is such that the inner reinforcing plate 125 and the outer reinforcing plate 225 correspond to each other. While in the position, it moves in the longitudinal direction coaxially with the outer body portion 221 and is accommodated in the outer body portion 221. In this way, as shown in the fourth process drawing of FIG. 6, the combination of the support block portion 321 and the inner reinforcing plate 125 naturally flows between the pair of ribs constituting the outer reinforcing plate 225. It can be interpositioned.

Meanwhile, in the above first embodiment, the outer diameter of the inner reinforcing frame 123 is equal to the inner diameter of the outer reinforcing frame 223 to prevent interference between the inner reinforcing frame 123 and the outer reinforcing frame 223. It was made to be the same or smaller. However, in the second embodiment, since all joining processes are performed only by longitudinal movement, no interference occurs at all regardless of the height of the inner reinforcing plate 125 and the outer reinforcing plate 225. Therefore, it does not matter whether the height from the outer surface of the inner reinforcing plate 125 exceeds the height from the inner surface of the outer reinforcing plate 225 or not. However, in the second embodiment, the inner reinforcing plate 125 is inserted into the support slot portion 322 formed in a groove shape on the support block portion 321, so the height of the inner reinforcing plate 125 If is too high and the depth of the support slot portion 233 becomes too deep, there is a risk that the support block portion 321 may be damaged by splitting. Considering this, the height of the inner reinforcement plate 125 is within a range that does not excessively increase the risk of damage to the support block portion 321, that is, it is formed to be about half the height of the support block portion 321 as shown in the drawing. It is appropriate to be

In this way, longitudinal movement is used when combining the plurality of pipe supports 300, the inner body portion 121, and the outer body portion 221. At this time, if excessive movement or movement in the opposite direction occurs, the coupling may occur. There is a risk that it will be lifted. In order to prevent excessive movement after coupling by longitudinal movement or release by longitudinal movement in the opposite direction, as shown in the fifth process drawing of FIG. 6, a pair of pairs constituting the outer reinforcement plate 225 An outer stopper 226 that blocks the space between the ribs is provided.

At this time, the outer stopper 226 may be provided in both the movement direction for engagement (i.e., the engagement movement direction) and the movement direction for release (i.e., the release movement direction). However, it is natural that the direction of combined movement should be blocked from the beginning to prevent excessive movement, and the structure does not need to be changed. In consideration of this, the outer stopper 226 is provided in the release movement direction of the outer reinforcement plate 225 to allow movement in the engagement movement direction before coupling, but to regulate movement in the release movement direction after engagement. On the other hand, a blocking wall may be formed in the combined movement direction of the outer reinforcement plate 225 to regulate excessive movement (not shown in the drawing to simplify the drawing). At this time, the blocking wall may be formed integrally with the outer reinforcement plate 225 or may be formed to be detachable.

In addition, considering that the outer reinforcing plate 225 must play the role of holding the inner reinforcing plate 125 firmly and stably, it is formed larger than the inner reinforcing plate 125, so that it has a margin to prevent slight overmovement. It is desirable to ensure that there is no problem even if release movement occurs. That is, it is preferable that the length of the inner reinforcing plate 125 is smaller than the length of the outer reinforcing plate 225.

An exploded perspective view of the pipe joint that has been assembled through the above-described process is shown in Figure 7, and a radial cross-sectional view is shown in Figure 8. In the fully assembled state, the pipe joint forms a combination in which the inner reinforcement plate 125 is inserted into the groove-shaped support slot portion 322, and this combination is the outer reinforcement plate (in the form of a pair of ribs). By being inserted into 225, in the second embodiment as in the first embodiment, the inner rigid portion 110 and the outer rigid portion 120 are coupled via the pipe support 300. Also, as in the first embodiment, in the second embodiment as well, as can be seen in FIGS. 7 and 8, the inner rigid portion 110 and the outer rigid portion 120 do not directly contact each other. Accordingly, even if heat flows in, it must pass through the piping support 300 on the heat transfer path. As described above, the piping support 300 is made of high-pressure glass fiber, polymer, etc., whose conductive heat transfer coefficient is much lower than that of metal. Because it is formed, the amount of heat inflow can be effectively reduced in the second embodiment as in the first embodiment.

Meanwhile, in Figure 8, the direction of the force applied to the pipe support 300 is indicated by an arrow. Also in the second embodiment, as in the first embodiment, the pipe support body 300 is supported by the inner reinforcing plate 125 and the outer reinforcing plate 225 made of a material with higher strength than itself. . Therefore, when the inner rigid portion 110 and the outer rigid portion 120 receive external forces such as tension, compression, or bending, actual stress, including tension and shear, is exerted on the inner reinforcing plate 125 and the outer reinforcing plate 225. is withstood, and only compressive force acts on the pipe support 300. Accordingly, the risk of damage to the pipe support 300 can be reduced while the robustness of the pipe joint can be improved.

[4] Responsive simulation results for movement in various directions of the flexible vacuum insulated pipe of the present invention

Figure 9 is a sequential capture screen of simulation operation images corresponding to the gravitational field of the flexible vacuum insulated pipe of the present invention. If a straight pipe is supported at both ends and exposed to a gravitational field, it becomes a curved pipe in the shape of a parabola with the center stretched out, as shown. At this time, only the inner/outer flexible portions 110 and 120 are contracted or expanded, and the inner/outer rigid portions 120 and 220 are not deformed.

In this way, when deformation occurs in the flexible vacuum insulation pipe 1000, the inner/outer flexible portions 110 and 120 may contact each other due to contraction or expansion, preventing the insulation space V from being sufficiently secured. There is a risk that it will happen. However, as described above, the curvatures of the inner/outer flexible portions 110 and 120 are designed to be the same, and at the same time, the inner/outer rigid portions 120 and 220 and the pipe support 300 are designed to have a combined structure. By ensuring that the pipe joints are properly distributed, these problems can be effectively avoided.

In addition, there is a risk that problems such as damage may occur due to excessive stress being applied to the pipe support 300 due to displacement of the inner/outer flexible portions 110 and 120. However, in the present invention, as described above, no matter what direction an external force is generated, only a compressive force is applied to the pipe support 300, so this risk can be greatly alleviated.

In fact, in the simulation results, the stress is indicated to increase from the lower color to the upper color of the legend, and it was confirmed that the maximum stress generated is less than the yield stress, which can ensure the structural stability of the flexible vacuum insulated pipe (1000) of the present invention. . Figures 10, 11, and 12 are sequential capture screens of simulation operation images corresponding to the horizontal displacement, vertical displacement, and left and right displacement of the flexible vacuum insulated pipe of the present invention, respectively. Here, as in FIG. 9, it is clearly confirmed that no excessive stress is generated no matter how large the deformation occurs. In other words, when using the flexible vacuum insulated piping of the present invention, the piping is placed over an external structure with significant bends, or the piping is It can be confirmed that even if horizontal, vertical, and left/right displacement occurs due to external factors such as movement of the supported device, the work can be performed stably without rupture in the pipe.

The present invention is not limited to the above-described embodiments, and its scope of application is diverse, and anyone skilled in the art can understand it without departing from the gist of the invention as claimed in the claims. Of course, various modifications are possible.

1000: Flexible vacuum insulated piping
100: inner piping
110: inner flexible portion 120: inner rigid portion
121: inner main body 122: inner connection part
123: inner reinforcement frame 124: inner fastening pin
125: inner reinforcement plate
200: External piping
210: outer flexible portion 220: outer rigid portion
221: outer main body 222: outer connection part
223: Outer reinforcement frame 224: Outer fastening pin
225: Outer reinforcement plate 226: Outer stopper
300: Piping support body
311: support border 312: support wing portion
321: support block part 322: support slot part
410: external connection 420: internal connection
430: terminal connection 500: vacuum exhaust port

Claims (25)

An inner flexible portion 110 that extends in the longitudinal direction and includes a flexible structure capable of changing shape;
An inner rigid portion 120 formed in a cylindrical shape and joined to the inner flexible portion 110 in the longitudinal direction;
An inner pipe (100) including a combination of a plurality of the inner flexible portions (110) and the inner rigid portions (120) alternately coupled together;
It extends in the longitudinal direction and includes a flexible structure capable of changing shape, and is spaced apart from the inner flexible portion 110 by a predetermined distance in the radial direction to accommodate the inner flexible portion 110 and provide a space between the inner flexible portion 110 and the inner flexible portion 110. An outer flexible portion 210 forming an insulating space (V);
It is formed in a cylindrical shape and is spaced apart from the inner rigid portion 120 by a predetermined distance in the radial direction, accommodates the inner rigid portion 120, and forms an insulating space V between the inner rigid portion 120 and the outer flexible portion ( An outer rigid portion 220 joined to the longitudinal direction 210);
An outer pipe 200 including a combination of a plurality of the outer flexible portions 210 and the outer rigid portions 220 alternately coupled together;
A pipe support body 300 that is joined to both the inner rigid portion 120 and the outer rigid portion 220 to restrict the relative displacement of the inner pipe 100 and the outer pipe 200 and at the same time structurally support it;
Flexible vacuum insulated piping comprising a.
The method of claim 1, wherein the flexible vacuum insulated pipe (1000) is
The inner rigid portion 120 and the outer rigid portion 220 are formed of a metal material,
A flexible vacuum insulated pipe, wherein the pipe support 300 is made of a material with a relatively low conduction heat transfer coefficient compared to a metal material.
The method of claim 2, wherein the flexible vacuum insulated pipe (1000) is
The inner rigid portion 120 is formed in a cylindrical shape and is formed at both ends of the inner body portion 121 in the longitudinal direction of the inner body portion 121 and joined to the inner flexible portion 110 in the longitudinal direction. It includes an inner connection portion 122 formed as a gently curved surface to be connected to the portion 110,
The outer rigid portion 220 is formed in a cylindrical shape and is spaced apart from the inner rigid portion 120 by a predetermined distance in the radial direction, and the outer body portion 221 is joined to the outer flexible portion 210 in the longitudinal direction. A flexible vacuum insulated pipe is formed at both ends of the portion 221 in the longitudinal direction and includes an outer connection portion 222 formed with a gently curved surface to be connected to the outer flexible portion 210.
The method of claim 3, wherein the flexible vacuum insulated pipe (1000) is
A support structure for supporting the pipe support 300 is formed in the inner rigid portion 120 and the outer rigid portion 220,
The piping support 300 is a flexible vacuum insulated pipe, characterized in that it is formed in a shape corresponding to the support structure.
The method of claim 4, wherein the flexible vacuum insulated pipe (1000) is
The inner rigid portion 120 includes an inner reinforcing frame 123 that protrudes in the radial direction in the form of a flange over the entire outer circumference of the inner body portion 121,
Flexible vacuum insulated pipe, characterized in that the outer rigid portion (220) includes an outer reinforcing frame (223) supporting the inner reinforcing frame (123) and the pipe support body (300).
The method of claim 5, wherein the flexible vacuum insulated pipe (1000) is
The piping support body 300 includes a support frame 311 in the form of a border fitted around the entire outer surface of the inner body portion 121, and a plurality of radially arranged protrusions in the radial direction from the support frame 311. A flexible vacuum insulated pipe comprising two support wings (312).
The method of claim 6, wherein the flexible vacuum insulated pipe (1000) is
A plurality of the outer reinforcing frames 223 extend in the circumferential direction and protrude radially over the inner surface of the outer main body 221 and are radially disposed at positions corresponding to the support wings 312. Features flexible vacuum insulated piping.
The method of claim 7, wherein the flexible vacuum insulated pipe (1000) is
A pair of the pipe supports 300 are coupled to one side and the other side of the inner reinforcing frame 123, so that the inner reinforcing frame 123 is interposed between the pair of supporting wings 312 facing each other. combined as much as possible,
Each of the outer reinforcing frames 223 is formed in the form of a pair of parallel ribs facing each other, and is a combination of a pair of the support wings 312 and the inner reinforcing frames 123 interposed therebetween. Flexible vacuum insulated piping characterized in that it is coupled so that it is interposed between a pair of ribs.
The method of claim 8, wherein the flexible vacuum insulated pipe (1000) is
A combination of a pair of the piping support body 300 and the inner body portion 121 is positioned at a position where the support wing portion 312 and the outer reinforcing frame 223 are misaligned with each other, and the outer body portion 221 It moves in the longitudinal direction coaxially with and is accommodated within the outer body portion 221,
The combination of the pair of the pipe supports 300 and the inner body portion 121 rotates while accommodated in the outer body portion 221, thereby forming a pair of the support wings 312 and interposed between them. By interposing the combination of the inner reinforcing frame 123 between a pair of ribs constituting the outer reinforcing frame 223,
Flexible vacuum insulated piping, characterized in that a pair of the piping support body 300, the inner body portion 121, and the outer body portion 221 are coupled to each other.
The method of claim 9, wherein the flexible vacuum insulated pipe (1000) is
When a pair of the pipe supports 300 and the inner body portion 121 are coupled, an inner fastening pin 124 is provided that simultaneously penetrates the pair of support wing portions 312 and fastens them to each other. Flexible vacuum insulated piping.
The method of claim 9, wherein the flexible vacuum insulated pipe (1000) is
When a pair of the pipe support 300, the inner body 121, and the outer body 221 are coupled, the outer reinforcement is provided to prevent excessive rotation or release due to rotation in the opposite direction after coupling by rotation. Flexible vacuum insulated piping, characterized in that it is provided with an outer fastening pin (223) that simultaneously penetrates a pair of ribs constituting the frame (223) and fastens them to each other.
The method of claim 11, wherein the flexible vacuum insulated pipe (1000) is
A blocking wall is formed in the combined rotation direction of the outer reinforcing frame 223 to regulate excessive rotation,
Flexible, characterized in that the outer fastening pin 223 is provided in the release rotation direction of the outer reinforcing frame 223 to allow rotation in the engagement rotation direction before coupling, but to regulate rotation in the release rotation direction after engagement. Vacuum insulated piping.
The method of claim 12, wherein the flexible vacuum insulated pipe (1000) is
Flexible vacuum insulated piping, characterized in that the blocking wall is formed integrally with the outer reinforcing frame 223 or is formed in a detachable manner.
The method of claim 9, wherein the flexible vacuum insulated pipe (1000) is
Flexible vacuum insulated pipe, characterized in that the outer diameter of the inner reinforcing frame (123) is the same as or smaller than the inner diameter of the outer reinforcing frame (223).
The method of claim 4, wherein the flexible vacuum insulated pipe (1000) is
The inner rigid portion 120 includes a plurality of inner reinforcing plates 125 that protrude in the radial direction and are radially disposed in the form of ribs extending longitudinally across the outer surface of the inner body portion 121,
Flexible vacuum insulated pipe, characterized in that the outer rigid portion (220) includes an outer reinforcing plate (225) supporting the inner reinforcing plate (125) and the pipe support body (300).
The method of claim 15, wherein the flexible vacuum insulated pipe (1000) is
A plurality of the pipe supports 300 correspond to the inner reinforcing plate 125 and extend in the longitudinal direction, and the support block portion 321 is fitted to the inner reinforcing plate 125. Flexible vacuum insulated piping comprising a support slot portion 322 formed in the shape of a groove extending in the longitudinal direction as much as possible on the support block portion 321.
The method of claim 16, wherein the flexible vacuum insulated pipe (1000) is
A plurality of the outer reinforcing plates 225 extend in the longitudinal direction and protrude in the radial direction over the inner surface of the outer main body 221 and are radially disposed at a position corresponding to the inner reinforcing plate 125. Features flexible vacuum insulated piping.
The method of claim 17, wherein the flexible vacuum insulated pipe (1000) is
The plurality of piping supports 300 and the support block parts 321 move in the longitudinal direction so that the inner reinforcement plate 125 is inserted into the support slot part 322, thereby forming a plurality of the support block parts 321. ) and the inner reinforcement plate 125 are each coupled to each other,
Each of the outer reinforcing plates 225 is formed in the form of a pair of parallel ribs facing each other, so that the combination of each of the support block portions 321 and the inner reinforcing plates 125 forms a pair of each. Flexible vacuum insulated piping characterized in that it is coupled so as to be sandwiched between ribs.
The method of claim 18, wherein the flexible vacuum insulated pipe (1000) is
The combination of the support block portion 321 and the inner reinforcing plate 125 is configured to form the outer body portion 221 and the inner reinforcing plate 125 and the outer reinforcing plate 225 in positions corresponding to each other. At the same time as it moves coaxially in the longitudinal direction and is accommodated in the outer body portion 221,
The combination of the support block portion 321 and the inner reinforcing plate 125 is disposed between a pair of ribs constituting the outer reinforcing plate 225,
Flexible vacuum insulated piping, characterized in that coupling is achieved between the plurality of piping supports 300, the inner body 121, and the outer body 221.
The method of claim 19, wherein the flexible vacuum insulated pipe (1000) is
When combining a plurality of the pipe supports 300, the inner body 121, and the outer body 221, to prevent excessive movement after coupling due to longitudinal movement or release due to longitudinal movement in the opposite direction. Flexible vacuum insulated piping, characterized in that an outer stopper (226) is provided to block the gap between a pair of ribs constituting the outer reinforcing plate (225).
The method of claim 20, wherein the flexible vacuum insulated pipe (1000) is
A blocking wall is formed in the combined movement direction of the outer reinforcement plate 225 to regulate excessive movement,
Flexible vacuum, characterized in that the outer stopper 226 is provided in the release movement direction of the outer reinforcing plate 225 to allow movement in the connection movement direction before coupling, but to regulate movement in the release movement direction after engagement. Insulated piping.
The method of claim 21, wherein the flexible vacuum insulated pipe (1000) is
Flexible vacuum insulated piping, characterized in that the blocking wall is formed integrally with the outer reinforcing plate 225 or is formed in a detachable manner.
The method of claim 19, wherein the flexible vacuum insulated pipe (1000) is
Flexible vacuum insulated piping, characterized in that the length of the inner reinforcing plate 125 is formed to be smaller than the length of the outer reinforcing plate 225.
The method of claim 1, wherein the flexible vacuum insulated pipe (1000) is
The inner pipe 100 is formed such that a plurality of the inner flexible portions 110 and the inner rigid portions 120 are alternately coupled and the inner flexible portions 110 are disposed at both ends,
The outer piping 200 is formed such that a plurality of the outer flexible portions 210 and the outer rigid portions 220 are alternately coupled and the outer flexible portions 210 are disposed at both ends,
The flexible vacuum insulated pipe (1000) is,
An internal connection portion 410 coupled to the ends of the inner flexible portion 110 at both ends of the inner pipe 100;
An external connection portion 420 coupled to the ends of the outer flexible portion 210 at both ends of the outer pipe 200;
An end connection part 430 connected to an external device by connecting the internal connection part 410 and the external connection part 420 to each other;
Flexible vacuum insulated piping comprising a.
The method of claim 1, wherein the flexible vacuum insulated pipe (1000) is
A vacuum exhaust port (500) connected to a vacuum pump to exhaust air to create a vacuum state in the insulating space (V), and serving as a seal after securing the vacuum;
Flexible vacuum insulated piping comprising:

Images