CN112585392A - Vacuum heat insulation piping - Google Patents
Vacuum heat insulation piping Download PDFInfo
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- CN112585392A CN112585392A CN202080001924.7A CN202080001924A CN112585392A CN 112585392 A CN112585392 A CN 112585392A CN 202080001924 A CN202080001924 A CN 202080001924A CN 112585392 A CN112585392 A CN 112585392A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
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- Thermal Insulation (AREA)
Abstract
The present invention relates to a vacuum heat insulation pipe (10) which prevents the formation of dew condensation between an inner pipe (100) and a vacuum outer pipe (300a), and which uniformly has a vacuum space (301) formed between the inner pipe (100) and the vacuum outer pipe (300a) to prevent the deformation of the vacuum outer pipe (300a) and the like due to vacuum, the vacuum heat insulation pipe (10) comprising: an inner tube (100) for transferring an ultra-low temperature fluid; a vacuum outer tube (300a) which is disposed at the outer periphery of the inner tube (100), forms a vacuum space (301) with the inner tube (100), and has a protruding vacuum port (302) formed on one surface of the outer peripheral surface; first heat blocking disks (400a) which are disposed on both sides of the inside of the vacuum space (301) in an arc shape with respect to the vacuum port (302) of the vacuum outer tube (300a), have an inner peripheral surface connected to the outer peripheral surface of the inner tube (100), have an outer peripheral surface connected to the inner peripheral surface of the vacuum outer tube (300a), and have a plurality of first through holes (410a) formed on one outer surface thereof and spaced apart from each other in the circumferential direction; and a second heat blocking plate (400b) which is disposed adjacent to one side of the first heat blocking plate (400a) and has a shared space (401) formed therebetween, an inner circumferential surface connected to an outer circumferential surface of the inner tube (100), an outer circumferential surface connected to an inner circumferential surface of the vacuum outer tube (300a), and a plurality of second through holes (410b) formed on an inner surface thereof and spaced apart in a circumferential direction, wherein installation means for the first heat blocking plate (400a) and the second heat blocking plate (400b) are formed on both sides of an inside of the vacuum space (301) with reference to the vacuum port (302).
Description
Technical Field
The present invention relates to a vacuum insulation pipe for transferring ultra-low temperature liquefied gas, and more particularly, to a vacuum insulation pipe which prevents formation of dew condensation between an inner pipe and an outer vacuum pipe, and which uniformly has a vacuum space formed between the inner pipe and the outer vacuum pipe, thereby preventing deformation of the outer vacuum pipe or the like due to vacuum.
Background
In general, since ultra-low temperature liquefied Gas has low temperature and low latent heat, and is easily vaporized even with a small amount of heat intrusion, in order to transfer ultra-low temperature liquefied Gas to equipment located far from a storage tank, vacuum insulation piping having excellent insulation performance is used in a land piping or the like for supplying ultra-low temperature fluid (e.g., -163 ℃ LNG) to a carrier, a fuel propulsion ship, and these ships.
The vacuum heat Insulation pipe has a structure using a powder vacuum method using powder pearlite and a multi-layer vacuum method using Super heat Insulation material (Super Insulation). The inner pipe and the outer pipe of the vacuum heat Insulation pipe use stainless steel (STS) pipes with a vacuum layer therebetween, but even if the heat transfer of convection and conduction is blocked, the radiation heat cannot be blocked in the vacuum layer, so the powder vacuum method is used to inject powder pearlite into the inside of the vacuum layer to block the radiation heat, and the multi-layer vacuum method is used to block the radiation heat by winding a Super Insulation Film (Super Insulation Film) around the inner pipe.
Conventional vacuum heat insulation pipes using the powder vacuum method and the multi-layer vacuum method may have a vacuum layer broken when the pipe is damaged by external impact or the like. Alternatively, if the vacuum layer is broken due to a defect or a problem in the vacuum welded portion, it may be considered that the vacuum insulation pipe has completely lost its function. Although the powder pearlite and the super heat insulating material film have a certain heat insulating function, they do not easily function as a heat insulating material for piping for transporting LNG at-163 ℃.
Further, the degree of vacuum of the pipe decreases with the lapse of time, and therefore heat loss of the pipe during the generated maintenance work time is considered to some extent, and at this time, it can be said that BOG due to heat loss is considerably large.
Since the LNG in the ultra-low temperature (-163 c) state transferred through the internal piping is broken by vacuum when the external piping is damaged, the heat insulation effect is remarkably reduced in this state, and thus, if it is naturally gasified, the loss of the gas amount to be gasified first is large, but the pressure of the internal piping increases due to the increase in the volume of the LNG changed from the liquid state to the gas state, and therefore, there is a risk of an accident, and when the accident occurs, there is a problem in the entire piping system. In this case, much work time is required for maintenance of the piping. There is a problem in that LNG that is naturally vaporized during the time required for maintenance is lost accordingly.
As in the conventional vacuum heat insulation pipe, although the heat insulation performance can be improved by the structure in which the vacuum state is maintained between the inner pipe and the outer pipe, since the support frame is required to be provided in order to maintain the space between the inner pipe and the outer pipe and to support the inner pipe, the inner pipe and the outer pipe are finally connected to each other via the support frame.
Accordingly, the support frame forms a heat transfer path between the internal pipe and the external pipe, thereby unnecessarily generating heat loss, and is manufactured at a length capable of preventing heat loss of the internal pipe, so that it is difficult to change the length of the external pipe, and thus not only the support frame needs to be manufactured based on accurate actual measurement, but also the support frame is subjected to many restrictions in maintenance and space while the length of the external pipe is increased.
[ Prior Art document ]
[ patent document ]
(patent document 1)1 Korean registered patent No. 10-1660694 (name of the invention: vacuum insulated piping)
(patent document 2)2 Korean registered patent No. 10-1448240 (name of the invention: vacuum insulated piping)
(patent document 3)3 Korean registered patent No. 10-1222622 (name of the invention: vacuum insulation piping connecting device)
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a vacuum insulation pipe in which a heat transfer path is formed between an inner pipe and an outer vacuum pipe, and a heat insulation pipe is formed in the vacuum outer pipe to maintain a vacuum state between the outer vacuum pipe and the heat insulation pipe, thereby improving heat insulation performance and thermal breaking performance, and minimizing heat loss during maintenance work, as compared to the conventional art.
The technical problem to be achieved by the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned can be clearly understood from the following description by a person having ordinary knowledge in the technical field to which the present invention pertains.
An embodiment of the present invention for achieving the above object provides the vacuum insulation piping recited in claims 1 to 10.
According to the present invention configured as described above, a heat transfer space for transferring heat is secured between the inner tube and the outer vacuum tube, and not only heat loss of the ultra-low temperature liquefied gas in the inner tube is prevented, but also heat release in the heat transfer space is blocked and heat transfer from the outside is blocked by forming the vacuum space for maintaining a vacuum state between the outer vacuum tube and the inner tube or the heat insulating tube, so that heat transfer to the inner tube through the outer vacuum tube or the heat insulating tube can be delayed and heat loss can be minimized.
Further, since the heat blocking plate and the space maintaining body are provided to uniformly maintain the vacuum space of the inner pipe or the heat insulating pipe and the vacuum outer pipe and the space of the heat insulating space of the inner pipe and the heat insulating pipe, not only the effect of uniform heat blocking and heat insulation can be maintained without being limited by the length of the inner pipe, but also the heat blocking plate and the space maintaining body can be installed and applied to an original product, the performance can be improved, and the heat loss cost can be remarkably reduced as compared with the conventional piping system of the ultra-low temperature fluid.
Drawings
Fig. 1 is a diagram illustrating a vacuum insulation pipe according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view showing an enlarged portion "a" of the vacuum insulation pipe according to the embodiment of the present invention shown in fig. 1.
Fig. 3 is a view a showing a first heat cutoff disk, a view b showing a second heat cutoff disk, a view c showing a flow path hole and a fin formed in an inner peripheral surface of the first heat cutoff disk, and a view d showing a flow path hole and a fin formed in an outer peripheral surface of the first heat cutoff disk in the vacuum heat insulation pipe according to the embodiment of the present invention.
Fig. 4 is a diagram showing a structure in which a space holder is provided in a vacuum insulation pipe according to an embodiment of the present invention.
Fig. 5 is a view showing a space holder in a vacuum insulation pipe according to an embodiment of the present invention.
Fig. 6 is a diagram showing a form in which fins project to both sides on a first heat blocking plate in the vacuum heat insulation pipe according to the embodiment of the present invention.
Fig. 7 is a diagram showing a configuration in which a radiator portion is disposed in a vacuum space in a vacuum heat insulation pipe according to an embodiment of the present invention.
Fig. 8 is a diagram showing a form in which a partition pipe is provided in a vacuum space in a vacuum heat insulation pipe according to an embodiment of the present invention.
Fig. 9 is an enlarged view showing a portion where a partition pipe is provided in a vacuum space between a second heat cutoff plate and a first heat cutoff plate in a vacuum insulation pipe according to an embodiment of the present invention.
Fig. 10 is an enlarged view of a portion of the vacuum insulation pipe in which a partition pipe having a groove shape between the second heat cutoff plate and the first heat cutoff plate is provided according to the embodiment of the present invention.
Fig. 11 is an enlarged view showing a portion of the vacuum insulation pipe in which the spiral partition pipe between the second heat cutoff disk and the first heat cutoff disk is provided according to the embodiment of the present invention.
Fig. 12 is a diagram showing a structure in which the second heat cutoff plate and the first heat cutoff plate disposed on both sides in the vacuum space with the vacuum port as a reference are formed in an arc shape in the vacuum insulation pipe according to the embodiment of the present invention.
Fig. 13 is a diagram showing a structure in which a vacuum inner tube is arranged in a vacuum space in a vacuum heat insulation pipe according to an embodiment of the present invention.
Fig. 14 is a view showing a cross section of an enlarged portion "B" in the vacuum insulation pipe according to the embodiment of the present invention of fig. 13.
Fig. 15 is a partially enlarged view illustrating a structure in which vacuum inner pipes are arranged between a second heat blocking plate and a first heat blocking plate and are connected to each other in a vacuum insulation pipe according to an embodiment of the present invention.
Description of the reference symbols
Vacuum inner tube 300b vacuum space 301 vacuum port 302
First heat blocking plate 400a second heat blocking plate 400b heat sink portion 400c
Third through-hole 404 and first through-hole 410a of common space 401
Second through-hole 410b flow path hole 420 heat sink 430
First vertical surface 470 second horizontal surface 480 second vertical surface 490
Inclined surface 511, second horizontal surface 512, and second space 513
Detailed Description
The present invention provides a coupling structure of a vacuum heat insulation pipe 10 for transferring an ultra-low temperature fluid. In this connection, the term "ultra-low temperature fluid" generally includes all fluids that are in a gaseous state under standard atmospheric temperature and pressure conditions. These include not only mixtures containing liquefied natural gas and other hydrocarbons, but also atmospheric gases such as oxygen, nitrogen, carbon dioxide and argon.
According to the coupling structure, as shown in fig. 1, a portion of the vacuum heat insulation pipe 10 having a coupling structure to be coupled by the components of the present invention is selected and the coupling structure will be described in detail, and the vacuum heat insulation pipe 10 has a coupling structure including an inner pipe 100 and an outer vacuum pipe 300a, the inner pipe being wrapped and coupled in a spaced manner, wherein the inner pipe 100 is in a cylindrical pipe form, and a flow path 101 penetrating through the inside is formed for transporting an ultra-low temperature fluid; the vacuum outer tube 300a is disposed along the longitudinal direction of the inner tube at the outer periphery of the inner tube 100, and forms a vacuum space 301 with the inner tube 100.
As shown in fig. 1, the vacuum heat insulation pipe 10 may have a coupling structure including a heat insulation pipe 200, and the heat insulation pipe 200 is disposed along the longitudinal direction of the inner pipe 100 at the outer periphery of the inner pipe 100, and forms a heat insulation space 201 with the inner pipe 100 and a vacuum space 301 with the vacuum outer pipe 300 a.
The length of the vacuum outer tube 300a or the vacuum outer tube 300a and the heat insulating tube 200 provided in the inner tube 100 for transporting the ultra-low temperature fluid may be determined according to the length of the thermal path required to be formed, that is, the length of the thermal path required for each ultra-low temperature liquefied gas.
In order to achieve the above-described object, the following embodiments are described in detail with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a vacuum insulation pipe 10, and the vacuum insulation pipe 10 includes: an inner tube 100 for transferring an ultra-low temperature fluid; a vacuum outer tube 300a disposed at an outer periphery of the inner tube 100, forming a vacuum space 301 with the inner tube 100 and forming a vacuum port 302 protruding from one surface of an outer circumferential surface thereof;
a first heat shielding plate 400a disposed at both sides of the vacuum space 301 in a circular arc shape with respect to the vacuum port 302 of the vacuum outer tube 300a, having an inner circumferential surface connected to the outer circumferential surface of the inner tube 100, an outer circumferential surface connected to the inner circumferential surface of the vacuum outer tube 300a, and a plurality of first through holes 410a formed on one outer surface thereof and spaced apart in the circumferential direction; and a second heat shielding plate 400b disposed adjacent to one side of the first heat shielding plate 400a and having a shared space 401 formed therebetween, an inner circumferential surface connected to the outer circumferential surface of the inner tube 100, an outer circumferential surface connected to the inner circumferential surface of the vacuum outer tube 300a, and a plurality of second through holes 410b formed on an inner surface thereof and spaced apart in a circumferential direction, wherein the installation means of the first heat shielding plate 400a and the second heat shielding plate 400b are formed on both sides of the inside of the vacuum space 301 with reference to the vacuum port 302.
As shown in fig. 1 and 2, the first and second heat shielding trays 400a and 400b included in the vacuum space 301 of the vacuum heat insulation pipe 10 are configured to partition the vacuum space 301 in a manner corresponding to the length of the vacuum space 301, so that not only can the vacuum state of the partitioned vacuum space 301 be maintained for a long time, but also a moving path of the temperature is ensured by the partitioned vacuum space 301, so that the temperature difference in the partitioned vacuum space 301 is quickly compensated, and the uniform temperature is maintained.
The first and second heat blocking disks 400a and 400b are connected in a circumferential shape in the vacuum space 301 formed in a circumferential shape between the inner tube 100 and the vacuum outer tube 300a, and when the temperature of the external air transferred from the outside is transferred into any one of the divided vacuum spaces 301, the heat sources of the adjacent other vacuum spaces 301 are transferred, so that the temperature difference can be compensated by the rapid heat flow in the vacuum state.
The first and second heat shielding plates 400a and 400b are formed at both sides of the vacuum space 301, that is, at one side of the vacuum space 301, with reference to the vacuum port 302 of the outer vacuum tube 300a, and the first and second heat shielding plates 400a and 400b are formed at the other side of the vacuum space 301, and at this time, if the first heat shielding plate 400a is formed at the left side, the second heat shielding plate 400b is formed at the right side.
Further, a vacuum port 302 is formed on one outer circumferential surface of the vacuum outer tube 300a between the first and second heat-shielding plates 400a and 400b formed on one side of the vacuum space 301 and the first and second heat-shielding plates 400a and 400b formed on the other side of the vacuum outer tube, and connection means in which the first and second heat-shielding plates 400a and 400b are formed on one and the other sides of the vacuum space 301 with reference to the vacuum port 302 are repeatedly formed in the vacuum space 301 along the longitudinal direction of the vacuum outer tube 300a so as to correspond to the positions of the plurality of vacuum ports 302.
As shown in a of fig. 3, a plurality of first through holes 410a are formed to penetrate in a circumferential direction on the outer side of one side surface of the first heat shielding plate 400a, i.e., on the outer side of one side surface facing the second heat shielding plate 400b, and as shown in b of fig. 3, on the inner side of one side surface of the second heat shielding plate 400b, that is, a plurality of second through holes 410b are formed to penetrate in a circumferential direction at the inner side of one side surface facing the first heat cutoff plate 400a, the positions of the first through holes 410a of the first heat cutoff plate 400a and the positions of the second through holes 410b of the second heat cutoff plate 400b are formed in a diagonal direction, not in a direction facing each other, so that the heat flow entering the common space 401 between the first and second heat blocking disks 400a and 400b compensates for the temperature difference in the common space 401, thereby maintaining a certain temperature of the vacuum space 301 as a whole.
In other words, if the heat flow is conducted into the vacuum space 401, the first and second heat blocking disks 400a and 400b release heat through the first and second through holes 410a and 410b formed in the first and second heat blocking disks 400a and 400b, and transmit heat to the vacuum space 301 adjacent to the first and second heat blocking disks 400a and 400b, and simultaneously block heat release and loss of the fluid in the inner tube while maintaining a certain temperature in the vacuum space 301.
The first and second Heat shielding plates 400a and 400b function as a Heat Sink (Heat Sink) that efficiently transfers and radiates Heat transferred through the inside of the vacuum space 301 or the surface of the vacuum outer tube 300a, and the transferred and transferred Heat contacts the first and second Heat shielding plates 400a and 400b, thereby improving Heat radiation and cooling efficiency, and further blocking Heat transfer due to air convection and Heat loss due to a Heat transfer phenomenon caused by air contact or surface contact with the vacuum outer tube 300a, the Heat insulating tube 200, or the inner tube 100, thereby blocking Heat transfer to the inner tube 100, due to formation of the vacuum space 301.
The inner circumferential surfaces of the first and second heat shielding plates 400a and 400b are inner circumferential surfaces of the through hole 402 penetrating in the circular arc shape, and the inner circumferential surfaces of the through hole 402 and the outer circumferential surface of the inner tube 100 are closely connected, and the outer circumferential surfaces of the first and second heat shielding plates 400a and 400b are circumferential surfaces 403, and the outer circumferential surfaces of the circumferential surfaces 403 and the inner circumferential surface of the vacuum outer tube 300a are closely connected.
The vacuum outer tube 300a is disposed at the outer periphery of the inner tube 100, and forms a vacuum space 301 with the inner tube 100, the vacuum outer tube 300a is provided with a vacuum port 302, the vacuum port 302 protrudes on one surface of the outer peripheral surface of the vacuum outer tube 300a to maintain the vacuum condition of the vacuum space 301, and the vacuum port 302 is formed at least one spaced apart so that the vacuum state is completely vacuum according to the length of the vacuum condition as the inner tube 100, thereby maintaining the vacuum state of the vacuum space 301.
The vacuum outer tube 300a is provided to have a length corresponding to the set length of the vacuum heat insulation pipe 10, one end and the other end of the vacuum outer tube 300a are connected to the outer circumferential surface of the inner tube 100 at the corresponding positions, and the vacuum space 301 is sealed to block the outside air.
The vacuum port 302 is connected to a vacuum pump (not shown) fixedly or movably disposed outside the vacuum heat insulation pipe 10, and functions to generate and maintain a vacuum state of the vacuum space 301, and the vacuum port 302 may further include a gauge (not shown) such as a sensor for measuring the vacuum state of the vacuum space 301.
Further, as shown in fig. 1, a vacuum heat insulation pipe 10 is provided, and the vacuum heat insulation pipe 10 has the following structure: further, the present invention includes a heat insulation pipe 200, wherein the heat insulation pipe 200 is disposed between the inner pipe 100 and the vacuum outer pipe 300a, and forms a heat insulation space 201 with the inner pipe 100 and a vacuum space 301 with the vacuum outer pipe 300a, and at this time, the inner circumferential surface of the first heat shielding plate 400a and the inner circumferential surface of the second heat shielding plate 400b are connected to the outer circumferential surface of the heat insulation pipe 200, not the outer circumferential surface of the inner pipe 100.
The circumferential insulation space 201 formed between the inner tube 100 and the insulation tube 200 serves to insulate the inner tube 100 while blocking the temperature of the ultra-low-temperature fluid transferred along the inner tube 100 from being released to the outside, and at this time, a heat insulating material (not shown) is filled in the insulation space 201 or a heat insulating sheet (not shown) is coated or attached to the outer circumferential surface of the inner tube 100, thereby blocking the heat loss of the ultra-low-temperature fluid of the inner tube 100.
The inner circumferential surfaces of the first and second heat shielding plates 400a and 400b are connected to the outer circumferential surface of the inner tube 100 in the vacuum heat insulation pipe 10 including the inner tube 100 and the vacuum outer tube 300a, but the inner circumferential surfaces of the first and second heat shielding plates 400a and 400b are connected to the outer circumferential surface of the heat insulation tube 200 in the vacuum heat insulation pipe 10 formed in this order of the inner tube 100, the heat insulation tube 200, and the vacuum outer tube 300 a.
Further, as shown in fig. 4 and 5, there is provided a vacuum heat insulation pipe 10, wherein the vacuum heat insulation pipe 10 further includes an integrated space holder 210, and the integrated space holder 210 includes a horizontal portion 211 and a close contact portion 212, wherein the horizontal portion 211 is provided in plurality in the shape of an arc with equal intervals along the longitudinal direction of the inner pipe 100 in the heat insulation space 201 between the inner pipe 100 and the heat insulation pipe 200, or the vacuum space 301 is provided in plurality in the shape of an arc with equal intervals along the longitudinal direction of the heat insulation pipe 200 in the vacuum outer pipe 300a, both side ends thereof are extended along the horizontal length, and the inner peripheral surface thereof is connected to the outer peripheral surface of the inner pipe 100 or the outer peripheral surface of the; the close contact portion 212 connects the horizontal portion 211, and forms a first space portion 213 inside, and the outer peripheral surface is connected to the inner peripheral surface of the heat insulation pipe 200 or the inner peripheral surface of the vacuum outer pipe 300 a.
The space holder 210 functions to support the vacuum outer tube 300a or the heat insulation tube 200 so as to prevent thermal deformation and to maintain a uniform space in the heat insulation space 201, and has a structure including one body of the horizontal portion 211 and the contact portion 212, and thus has a structure in which a plurality of vacuum spaces 301 between the vacuum outer tube 300a and the heat insulation tube 200 or heat insulation spaces 201 between the heat insulation tube 200 and the inner tube 100 are circumferentially contacted or connected at equal intervals.
In other words, the horizontal portion 211 is located at both side ends with a space therebetween, the inner peripheral surface is in close contact with or connected to the heat insulation pipe 200 or the inner pipe 100, both side surfaces of the close contact portion 212 are sealed, the inner peripheral end is connected to the end of the horizontal portion 211, and the first space portion 213 is formed inside as a peripheral surface of the peripheral surface protruding, and at this time, the outer peripheral surface of the peripheral surface is in close contact with or connected to the inner peripheral surface of the vacuum outer pipe 300a or the heat insulation pipe 200.
The first space part 213 of the space holder 210 is formed to support and hold the vacuum space 301 or the heat insulation space 201 while minimizing heat transfer at the surface temperature of the inner pipe 100 or the surface temperature of the heat insulation pipe 200.
Although not shown in the drawings, through holes (not shown) that are communicated with each other are formed in a circumferential shape at equal intervals on both sides of the close contact portion 212 of the space holder 210, and the stagnation temperature of the vacuum space 301 or the heat insulating space 201 moves to maintain a constant temperature in the vacuum space 301 or the heat insulating space 201.
Further, as shown in c and d of fig. 3, the vacuum heat insulation pipe 10 is provided, and a plurality of flow path holes 420 recessed inward are formed along the inner circumferential surface or the outer circumferential surface of the first heat shielding plate 400a, and fins 430 are formed between the flow path holes 420.
The inner circumferential surface of the first heat shielding plate 400a connected to the outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200 is formed in a repeated irregular shape along the circumferential direction, or the outer circumferential surface of the first heat shielding plate 400a connected to the inner circumferential surface of the vacuum outer pipe 300a is formed in a repeated irregular shape along the circumferential direction, in which case, the concave portion is the flow path hole 420, the convex portion is the radiation fin 430, and the end portion of the radiation fin 430 as the convex portion is connected to the outer circumference of the heat insulating pipe 200 or the outer circumference of the vacuum outer pipe 300 a.
The heat is transferred through the flow path holes 420 formed in the inner circumferential surface of the first heat shielding plate 400a, thereby playing a role of releasing the heat, and the heat radiation fins 430 have a heat release effect of rapidly cooling the heat transferred to the first heat shielding plate 400 a.
The outer circumferential surface of the first thermal cutoff disk 400a may have a repeated uneven pattern of flow path holes 420 and fins 430 so as to correspond to the arc pattern of the inner circumferential surface or the outer circumferential surface, and the inner circumferential surface or the outer circumferential surface of the second thermal cutoff disk 400b may have flow path holes 420 and fins 430.
Further, as shown in fig. 6, the vacuum heat insulation pipe 10 is provided in such a manner that, if the fins 430 have the same width as the first heat cutoff plate 400a and the second heat cutoff plate 400b, the fins 430 protrude toward both sides of the fins 430 in a manner corresponding to the length of the fins 430.
Has a shape of being protruded to both sides corresponding to the length, i.e., the vertical length, of the heat radiating fin 430, and plays a role of smoothly performing heat releasing and absorbing functions in order to maintain the temperature in the vacuum space 301.
Further, as shown in fig. 7, the vacuum insulation pipe 10 is provided, and the vacuum insulation pipe 10 further includes an integrated radiator portion 400c, and the radiator portion 400c includes a first vertical surface 470 in a circular arc shape, a first horizontal surface 480 in a circular arc shape, and a second vertical surface 490 in a circular arc shape, wherein the first vertical surface 470 is provided on both sides or one side of the vacuum space 301 with reference to the vacuum port 302, and an outer peripheral surface thereof is connected to an inner peripheral surface of the vacuum outer pipe 300 a; one side outer circumferential end of the first horizontal surface 480 is connected with the inner circumferential surface of the first vertical surface 470 in a bending way, and horizontally extends outwards; the inner circumferential surface of the second vertical surface 490 is connected to the outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200 while being bent and connected to the other outer circumferential end of the first horizontal surface 480,
when the heat sink portions 400c are disposed on both sides of the vacuum space 301, they are formed in bilateral symmetry with each other, and a plurality of third through holes 404 that penetrate through the centers of the first vertical surface 470, the first horizontal surface 480, and the second vertical surface 490 are formed in an arc shape at intervals.
The heat sink 400c is arranged in an arc shape with a step in the vacuum space 301, and when the air in the vacuum space 301 is exhausted through the vacuum port 302 in order to maintain the vacuum state in the vacuum space 301, it functions to prevent the air in the vacuum space 301 from moving and induce non-instantaneous soft air movement, thereby maintaining and generating the complete vacuum state in the vacuum space 301.
In other words, the heat sink 400c can maintain the vacuum and uniform pressure state of the vacuum space 301 by forming the buffer space by vacuum under different pressure conditions and discharging the air in the vacuum space 301.
The radiator portion 400c has an integral structure formed by the first vertical surface 470, the first horizontal surface 480, and the second vertical surface 490, and has a structure in which the entire surface is formed in a circular arc shape, and a plurality of third through holes 404 penetrating through the centers of the first vertical surface 470, the first horizontal surface 480, and the second vertical surface 490 are formed in a circular arc shape.
The outer peripheral surface of the first vertical surface 470 is connected to the inner peripheral surface of the vacuum outer tube 300a, one side outer peripheral end of the first horizontal surface 480 is bent and connected to the inner peripheral surface of the first vertical surface 470 and horizontally extended outward, the inner peripheral surface of the second vertical surface 490 is bent and connected to the other side outer peripheral end of the first horizontal surface 480, and the inner peripheral surface is connected to the outer peripheral surface of the inner tube 100 or the heat insulating tube 200.
When the heat sink portions 400c are disposed on both sides of the vacuum space 301, they are spaced apart from each other such that the second vertical surfaces 490 of the heat sink portions 400c face each other.
The heat sink 400c may be disposed inside the vacuum space 301 between the first and second heat shielding plates 400a and 400b or outside the first and second heat shielding plates 400a and 400b, and may be disposed in the vacuum space 301 alone without the first and second heat shielding plates 400a and 400 b.
Further, as shown in fig. 8 and 9, the vacuum insulation pipe 10 is provided, and the vacuum insulation pipe 10 further includes a dividing pipe 500, and the dividing pipe 500 connects the center of the inner surface of the second heat shielding plate 400b formed on one side of the inside of the vacuum space 301 and the center of the outer surface of the first heat shielding plate 400a formed on the other side of the inside of the vacuum space 301 with respect to the vacuum port 302 to each other in a circumferential shape, so that the first vacuum layers 501a and 501b at equal intervals are formed between the outer periphery of the inner pipe 100 or the insulation pipe 200 and the inner periphery of the vacuum outer pipe 300 a.
A cylindrical partition pipe 500 is formed, and the partition pipe 500 is formed by connecting the center of the inner surface of the second heat shielding plate 400b of the first and second heat shielding plates 400a and 400b formed on one side of the inside of the vacuum space 301 with the vacuum port 302 as a reference and the center of the outer surface of the first heat shielding plate 400a of the first and second heat shielding plates 400a and 400b formed on the other side of the inside, and wrapping the inner pipe 100 or the heat insulating pipe 200 in a spaced manner, and in this case, first vacuum layers 501a and 501b are formed between the partition pipe 500 and the inner pipe 100 or the heat insulating pipe 200, which are the inner circumferential surface of the partition pipe 500, and between the partition pipe 500 and the vacuum outer pipe 300a, which are the outer circumferential surface of the partition pipe 500, respectively.
The first vacuum layers 501a and 501b are formed as a double layer, and serve to block heat transfer to the inner pipe 100 or the insulating pipe 200 while blocking radiant heat transferred from the vacuum outer pipe 300a by the first vacuum layers 501a and 501b, thereby blocking heat loss to the fluid in the inner pipe 100 and external air outside the vacuum outer pipe 300a, thereby maximizing the insulating effect.
As shown in fig. 10, the vacuum heat insulation pipe 10 is provided with a groove 510 formed on one outer peripheral surface of the partition pipe 500, the groove 510 is bent to form inclined surfaces 511 which are inclined in bilateral symmetry with each other, a second space portion 513 is formed on the inner side, an inner peripheral surface of a second horizontal surface 512 connecting both ends of the inclined surfaces 511 is connected or in surface contact with an outer peripheral surface of the heat insulation pipe 200, and the groove 510 is formed on the outer peripheral surface of the partition pipe 500 at an equal pitch.
The surface of the partition pipe 500 is formed with a plurality of grooves 510 having a continuous arrangement structure in a symmetrical structure, in which the grooves 510 are formed in a circular arc shape, and are curved in such a manner that inclined surfaces 511 are formed to be inclined in a bilaterally symmetrical manner on one surface of the outer circumference of the partition pipe 500, thereby forming a recessed second space part 513 inside, and an inner circumferential surface of a second horizontal surface 512 connecting both ends of the inclined surfaces 511 is connected or in surface contact with the outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200.
When the inner circumferential surface of the second horizontal surface 512 of the groove 510 is connected to the outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200, a plurality of through holes (not shown) are formed in the circumferential direction at intervals on the respective inclined surfaces 511 adjacent to the space between the groove 510 and the groove 510 of the partition pipe 500, thereby maintaining a vacuum state in the space.
The groove 510 enlarges the contact area of the radiant heat, not the contact area of the heat transfer of the air in the vacuum space 301, for enlarging the heat release area.
As shown in fig. 11, in order to compensate for the degree of deformation caused by the vacuum pressure in the vacuum space 301 and to interrupt heat transfer and improve rapid cooling efficiency, the outer circumferential surface of the partition pipe 500 is formed into a spiral concave-convex structure or a partition-type concave-convex structure, that is, the partition surface is formed into a spiral concave-convex structure or a partition-type concave-convex structure while the first vacuum layers 501a and 501b are formed inside and outside the partition pipe 500, respectively.
If the surface of the classifying tube 500 is formed in a classifying type concave-convex structure, a shape having a ring-shaped concave portion and a convex portion is continuously formed on the outer circumferential surface of the classifying tube 500.
Further, as shown in fig. 11, the vacuum insulation pipe 10 is provided such that a first insertion tap 440 and a second insertion tap 450 are formed at the center of the inner surface of a second heat-blocking plate 400b formed at one side of the inside of a vacuum space 301 and at the center of the outer surface of a first heat-blocking plate 400a formed at the other side of the inside of the vacuum space 301 with reference to a vacuum port 302 so as to protrude in the circumferential direction and face each other, and a circumferential insertion groove 460 having a circumference larger than the circumference of the first insertion tap 440 is formed between the first insertion tap 440 and the second insertion tap 450 so as to correspond to the thickness of a partition pipe 500.
As shown in fig. 12, the vacuum heat insulation pipe 10 is provided such that the second heat shielding plate 400b formed on one side of the inside of the vacuum space 301 with respect to the vacuum port 302 and the first heat shielding plate 400a formed on the other side of the inside of the vacuum space 301 are formed in such a manner that the inner widths thereof become gradually larger toward the outer periphery and the inner periphery with respect to the center of the side surface, and the inner side surface and the outer side surface have a concave hemispherical structure.
The second heat shielding plate 400b formed at one side of the inside of the vacuum space 301 and the first heat shielding plate 400a formed at the other side of the inside facing the second heat shielding plate 400b have a hemispherical concave circumferential shape at the outer side and the inner side, respectively, and at this time, the first heat shielding plate 400a and the second heat shielding plate 400b are formed in a hemispherical concave shape, and the hemispherical surfaces are hot contact surfaces, so that thermal contact resistance due to surface roughness of the contact surfaces can be reduced, and cooling efficiency can be improved.
The first and second heat shielding plates 400a and 400b formed on one and the other sides in the vacuum space 301 may be formed in the same manner as the hemispherical thermal contact surfaces described above.
Further, the second vacuum layer 303 and the thermal insulation layer 304 are divided and separated by dividing the vacuum space 301 between the inner pipe 100 or the thermal insulation pipe 200 and the vacuum outer pipe 300a as described above, so that not only the radiant heat passing through the vacuum outer pipe 300a is blocked, but also the temperature difference of the heat transfer caused by the second vacuum layer 303 is blocked, and in order to maximize the thermal insulation performance by the thermal insulation layer 304, the following structure is provided.
As shown in fig. 13 and 14, a vacuum insulation pipe 10 is provided, which is divided into an outer vacuum pipe 300a provided with a vacuum port 302 and an inner vacuum pipe 300b formed inside the outer vacuum pipe 300a in a spaced manner, wherein the outer vacuum pipe 300a has an integrated structure formed by a first surface 310, a second surface 320, a third surface 330 and a fourth surface 340, and both ends of the first surface 310 are respectively bent vertically; a second surface 320 connected to an end of the first surface 310 and horizontally bent, and an inner circumferential surface connected to an outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200; the third surface 330 is connected with the end of the second surface 320 and is bent vertically to the inner side; the fourth surface 340 is connected to the end of the third surface 330, is horizontally bent, is extended by a predetermined length, and has a coupling groove 341 formed between the outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200,
a fifth surface 350 and a sixth surface 360 are formed at both ends of the vacuum inner tube 300b, respectively, wherein the fifth surface 350 is vertically bent; the sixth surface 360 is connected to an end of the fifth surface 350, is horizontally bent, has a length corresponding to the length of the fourth surface 340, has an inner circumferential surface closely attached to the outer circumferential surface of the inner tube 100 or the heat insulating tube 200, has an outer diameter corresponding to the outer diameter of the fourth surface 340 except both ends of the vacuum inner tube 300b,
the vacuum heat insulation pipe 10 has a structure in which an annular sealing portion 600 is formed between the fourth surface 340 of the vacuum outer tube 300a and the sixth surface 360 of the vacuum inner tube 300 b.
The vacuum outer tube 300a has a circumferential inner vacuum tube 300b formed inside thereof with a space therebetween, a second vacuum layer 303 formed between the vacuum outer tube 300a and the inner vacuum tube 300b, and a heat insulating layer 304 formed between the inner vacuum tube 300b and the inner tube 100 or the heat insulating tube 200, in other words, the second vacuum layer 303 is formed on the outer periphery of the inner vacuum tube 300b and the heat insulating layer 304 is formed on the outer periphery of the inner tube 100 or the heat insulating tube 200.
The two ends of the vacuum outer tube 300a are respectively formed into an arc shape by an integrated connecting structure formed by a first surface 310, a second surface 320, a third surface 330 and a fourth surface 340, wherein the first surface 310 is vertically bent; a second surface connected to an end of the first surface 310 and horizontally bent, and an inner circumferential surface connected to an outer circumferential surface of the inner pipe 100 or the heat insulating pipe 200; the third surface 330 is connected with the end of the second surface 320 and is bent vertically to the inner side; the fourth surface is connected to an end of the third surface 330, is horizontally bent, is extended by a predetermined length, is formed with a coupling groove 341 between the inner tube 100 or the outer circumferential surface of the heat insulating tube 200, is connected to an inner circumferential surface of the second surface 320, and has a sealed structure in a space between the vacuum outer tube 300a and the inner tube 100 or between the vacuum outer tube 300a and the heat insulating tube 200.
And, the integral connection structure in which the fifth surface 350 and the sixth surface 360 are respectively formed at both ends of the vacuum inner tube 300b is formed in a circular arc shape, wherein the fifth surface 350 is vertically bent; the sixth surface 360 is connected to an end of the fifth surface 350, is horizontally bent, has a length corresponding to that of the fourth surface 340, is positioned inside the coupling groove 341, has an inner circumferential surface closely contacting the outer circumferential surface of the inner tube 100 or the heat insulating tube 200, and has an outer diameter corresponding to that of the fourth surface 340 except both ends of the vacuum inner tube 300 b.
The sealing portion 600 is in a ring shape, and is disposed in the coupling groove 341 between the fourth surface 340 of the vacuum outer tube 300a and the sixth surface 360 of the vacuum inner tube 300b such that the outer peripheral surface thereof is in close contact with the fourth surface 340 of the vacuum outer tube 300a and the inner peripheral surface thereof is in close contact with the sixth surface 360 of the vacuum inner tube 300 b.
Therefore, the second vacuum layer 303 is maintained in a vacuum state through the vacuum port 302 provided in the vacuum outer tube 300a, and at this time, the vacuum pressure of the second vacuum layer 303 causes the vacuum inner tube 300b to move toward the second vacuum layer 303 and press the sealing portion 600, thereby forming an air layer maintaining a constant temperature in the heat insulating layer 304 while maintaining the vacuum state of the second vacuum layer 303.
As shown in fig. 15, the outer circumference of the vacuum outer tube 300a is connected to both sides, the first surface 310 on one side is the second heat shielding plate 400b having the second through hole 410b, the first surface 310 on the other side is the first heat shielding plate 400a having the first through hole 410a, and the first heat shielding plate 400a and the second heat shielding plate 400b are formed on the side of the second heat shielding plate 400b and the side of the first heat shielding plate 400a, respectively, and at this time, the first heat shielding plate 400a and the second heat shielding plate 400b formed on the side are the first surface 310, and the second surface 320, the third surface 330, and the fourth surface 340 are integrally connected to the first surface 310.
The first heat cutoff plate 400a and the second heat cutoff plate 400b, which are the first surface 310, are connected to the connection means of the second surface 320, the third surface 330, and the fourth surface 340, and are repeatedly arranged in the vacuum outer tube 300a, and the vacuum inner tube 300b coupled to the vacuum outer tube 300a in the same coupling structure is provided, so that the coupling structure of the vacuum outer tube 300a and the vacuum inner tube 300b is repeatedly arranged with a space therebetween along the longitudinal direction of the vacuum inner tube 300b corresponding to the longitudinal direction of the inner tube 100.
The above description is merely an exemplary description of the technical idea of the present embodiment, and a person having ordinary knowledge in the technical field to which the present embodiment belongs can make various modifications and variations within a range not departing from the essential characteristics of the present embodiment. Therefore, the present embodiment is used for explaining the technical ideas of the present embodiment, and is not limited to the technical ideas of the present embodiment, and the scope of the technical ideas of the present embodiment is not limited to the embodiments. The scope of protection of the present embodiment should be construed according to the claims below, and all technical ideas within the scope equivalent thereto should be construed to be included in the scope of the claims of the present embodiment.
Claims (10)
1. A vacuum insulation pipe, comprising:
an inner tube (100) for transferring an ultra-low temperature fluid;
a vacuum outer tube (300a) which is disposed at the outer periphery of the inner tube (100), forms a vacuum space (301) with the inner tube (100), and has a protruding vacuum port (302) formed on one surface of the outer peripheral surface;
first heat blocking disks (400a) which are disposed on both sides of the inside of the vacuum space (301) in an arc shape with respect to the vacuum port (302) of the vacuum outer tube (300a), the inner circumferential surface of which is connected to the outer circumferential surface of the inner tube (100), and the outer circumferential surface of which is connected to the inner circumferential surface of the vacuum outer tube (300 a); and
a second heat cutoff plate (400b) disposed adjacent to the first heat cutoff plate (400a) with a shared space (401) formed therebetween, an inner circumferential surface connected to an outer circumferential surface of the inner tube (100) and an outer circumferential surface connected to an inner circumferential surface of the vacuum outer tube (300a),
a plurality of first through holes (410a) are formed in a penetrating manner along the outer circumferential direction of one side surface of the first heat blocking plate (400a) facing the second heat blocking plate (400b) and are separated from each other, a plurality of second through holes (410b) are formed in a penetrating manner along the inner circumferential direction of one side surface of the second heat blocking plate (400b) facing the first heat blocking plate (400a) and are separated from each other,
the first heat blocking plate (400a) and the second heat blocking plate (400b) are provided with a mounting unit formed on both sides of the inside of the vacuum space (301) with reference to the vacuum port (302).
2. The vacuum insulation pipe according to claim 1, further comprising:
and a heat insulation pipe (200) which is disposed between the inner pipe (100) and the vacuum outer pipe (300a), and which forms a heat insulation space (201) with the inner pipe (100) and a vacuum space (301) with the vacuum outer pipe (300a), wherein the inner circumferential surface of the first heat shielding plate (400a) and the inner circumferential surface of the second heat shielding plate (400b) are connected to the outer circumferential surface of the heat insulation pipe (200) instead of the outer circumferential surface of the inner pipe (100).
3. The vacuum insulation piping according to claim 1 or 2,
the inner peripheral surface of a first heat shielding plate (400a) connected to the outer peripheral surface of an inner pipe (100) or a heat insulating pipe (200) is formed in a repeated uneven shape along the circumferential direction, or the outer peripheral surface of the first heat shielding plate (400a) connected to the inner peripheral surface of a vacuum outer pipe (300a) is formed in a repeated uneven shape along the circumferential direction, in this case, the recessed portion is a flow path hole (420), the protruding portion is a fin (430), and the end portion of the fin (430) as the protruding portion has a shape connected to the outer periphery of the heat insulating pipe (200) or the outer periphery of the vacuum outer pipe (300 a).
4. The vacuum insulation piping according to claim 3,
the shape of the heat sink (430) is convex toward both sides of the heat sink (430) in a manner corresponding to the length of the heat sink (430).
5. The vacuum insulation pipe according to claim 1 or 2, further comprising:
an integrated heat sink part (400c) including a first vertical surface (470) having a circular arc shape, a first horizontal surface (480) having a circular arc shape, and a second vertical surface (490), wherein the first vertical surface (470) is provided on both sides or one side of any one of the sides in the vacuum space (301) with the vacuum port (302) as a reference, and the outer peripheral surface thereof is connected to the inner peripheral surface of the vacuum outer tube (300 a); one side outer circumferential end of the first horizontal surface (480) is connected with the inner circumferential surface of the first vertical surface (470) in a bending way, and horizontally extends outwards; the inner peripheral surface of the second vertical surface (490) is connected to the outer peripheral end of the other side of the first horizontal surface (480) in a bent manner, and the inner peripheral surface is connected to the outer peripheral surface of the inner pipe (100) or the heat insulating pipe (200),
when the radiator parts (400c) are arranged on both sides of the vacuum space (301), they are formed in bilateral symmetry with each other, and a plurality of third through holes (404) that penetrate through the center of the first vertical surface (470), the center of the first horizontal surface (480), and the center of the second vertical surface (490) are formed in an arc shape with a space therebetween.
6. The vacuum insulation pipe according to claim 1 or 2, further comprising:
and a partition pipe (500) which connects the center of the inner surface of the second heat shielding plate (400b) formed on one side of the inside of the vacuum space (301) with the vacuum port (302) as a reference to the center of the outer surface of the first heat shielding plate (400a) formed on the other side of the inside of the vacuum space (301) in a circumferential shape, so that first vacuum layers (501a) and (501b) having an equal interval are formed between the outer circumference of the inner pipe (100) or the heat insulating pipe (200) and the inner circumference of the vacuum outer pipe (300 a).
7. The vacuum insulation piping according to claim 6,
a groove (510) is formed on one outer peripheral surface of the partition pipe (500), the groove (510) is bent in such a manner that inclined surfaces (511) are formed in a bilaterally symmetrical manner, a second space (513) is formed on the inner side, and the inner peripheral surface of a second horizontal surface (512) connecting both ends of the inclined surfaces (511) is connected to the outer peripheral surface of the inner pipe (100) or the heat insulation pipe (200),
the grooves (510) are formed at equal intervals on the outer peripheral surface of the dividing tube (500).
8. The vacuum insulation piping according to claim 5,
a first insertion tap (440) and a second insertion tap (450) are formed at the center of the inner side of a second heat blocking plate (400b) formed at one side of the inside of a vacuum space (301) and the center of the outer side of a first heat blocking plate (400a) formed at the other side of the inside of the vacuum space (301) with reference to a vacuum port (302) in such a manner as to protrude in the circumferential direction and face each other, and a circumferential insertion groove (460) is formed between the first insertion tap (440) and the second insertion tap (450) in such a manner as to correspond to the thickness of a dividing tube (500), wherein the second insertion tap (450) has a circumference larger than the circumference of the first insertion tap (440).
9. The vacuum insulation piping according to claim 1 or 2,
a second heat-blocking plate (400b) formed on one side of the inside of a vacuum space (301) with a vacuum port (302) as a reference and a first heat-blocking plate (400a) formed on the other side of the inside of the vacuum space (301) are in a form of gradually increasing in inner width toward the outer and inner peripheries with the side center as a reference, and the inner and outer side surfaces have a structure of a concave hemisphere shape.
10. The vacuum insulation piping according to claim 1 or 2,
the vacuum tube is divided into an outer vacuum tube (300a) provided with a vacuum port (302) and an inner vacuum tube (300b) formed at the inner side of the outer vacuum tube (300a) in a separated mode, the outer vacuum tube (300a) has an integrated structure formed by a first surface (310), a second surface (320), a third surface (330) and a fourth surface (340), and two ends of the first surface (310) are vertically bent; the second surface (320) is connected with the end of the first surface (310), horizontally bent, and connected with the outer peripheral surface of the inner pipe (100) or the heat insulation pipe (200) at the inner peripheral surface; the third surface (330) is connected with the end part of the second surface (320) and is vertically bent towards the inner side; the fourth surface (340) is connected to the end of the third surface (330) and bent horizontally, and is extended by a predetermined length, and a coupling groove (341) is formed between the fourth surface and the outer circumferential surface of the inner pipe (100) or the heat insulating pipe (200),
a fifth surface (350) and a sixth surface (360) are respectively formed at two ends of the vacuum inner tube (300b), wherein the fifth surface (350) is vertically bent; a sixth surface (360) which is bent horizontally while being connected to an end of the fifth surface (350), has a length corresponding to the length of the fourth surface (340), has an inner peripheral surface which is in close contact with the outer peripheral surface of the inner tube (100) or the heat insulating tube (200), and has an outer diameter which is identical to the outer diameter of the fourth surface (340) except for both ends of the vacuum inner tube (300b),
a ring-shaped sealing part (600) is formed between a fourth surface (340) of the vacuum outer tube (300a) and a sixth surface (360) of the vacuum inner tube (300 b).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190088202A KR102050809B1 (en) | 2019-07-22 | 2019-07-22 | Vacuum insulated pipes |
| KR10-2019-0088202 | 2019-07-22 | ||
| PCT/KR2020/009620 WO2021015538A1 (en) | 2019-07-22 | 2020-07-21 | Vacuum insulation pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112585392A true CN112585392A (en) | 2021-03-30 |
| CN112585392B CN112585392B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080001924.7A Active CN112585392B (en) | 2019-07-22 | 2020-07-21 | Vacuum heat insulation piping |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7094583B2 (en) |
| KR (1) | KR102050809B1 (en) |
| CN (1) | CN112585392B (en) |
| WO (1) | WO2021015538A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102050809B1 (en) * | 2019-07-22 | 2019-12-03 | 탈렌트엘엔지(주) | Vacuum insulated pipes |
| KR20210155161A (en) | 2020-06-15 | 2021-12-22 | 한국해양대학교 산학협력단 | Vacuum insulated pipe |
| KR20230105292A (en) | 2022-01-03 | 2023-07-11 | 이선우 | Vacuum insulated pipes |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2021534351A (en) | 2021-12-09 |
| JP7094583B2 (en) | 2022-07-04 |
| KR102050809B1 (en) | 2019-12-03 |
| CN112585392B (en) | 2022-09-06 |
| WO2021015538A1 (en) | 2021-01-28 |
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