A high-performance cooling and heating insulation pipe

Abstract

The present invention discloses a high-performance cooling and heating insulation pipe, which relates to the technical field of insulation pipes, including a coaxially arranged flow pipe and a vacuum insulation pipe, wherein the flow pipe is provided with a valve for opening or closing the flow pipe, and further comprising an overpressure protection mechanism, wherein when the valve is closed, the overpressure protection mechanism inflates the vacuum insulation pipe, and the materials of the flow pipe and the vacuum insulation pipe are both materials with a thermal conductivity of less than 0.3W / mk. The present invention provides a high-performance cooling and heating insulation pipe, wherein when the valve is closed, the vacuum insulation pipe can be inflated by the overpressure protection mechanism, thereby increasing the pressure inside the vacuum insulation pipe, thereby reducing the pressure difference between the inner wall and the outer wall of the flow pipe, and avoiding the flow pipe with a vacuum insulation layer from deforming under the "water hammer effect" as much as possible; through the overpressure protection design and the application of high-efficiency materials, the insulation pipe has significant advantages in terms of heat energy retention, cost saving, environmental protection, and other aspects.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation pipes, and in particular to a high-performance cooling and heating thermal insulation pipe. Background Art

[0002] Insulated energy-saving pipes are suitable for building heating, water supply, steam transportation and various industrial pipeline systems. They aim to achieve energy conservation and consumption reduction through excellent thermal insulation performance and promote environmental protection and sustainable development.

[0003] Vacuum layer insulated pipe is a pipe system that improves the insulation effect by forming a vacuum layer on the outside of the pipe. This pipe is usually used to transport low-temperature fluids (such as liquid nitrogen, liquid helium, etc.) or high-temperature fluids to reduce heat loss or external heat infiltration, thereby improving the insulation effect of the pipe to achieve energy saving.

[0004] For example, the patent document entitled "A composite vacuum insulation pipe" with the authorization announcement number CN209213307U and the authorization announcement date August 6, 2019, includes a pipe body, which is composed of a plurality of insulation branches connected together, and a vacuum outer branch is provided on the insulation branch, and the vacuum outer branch is fixed to the insulation branch through a plurality of brackets. The patent replaces the original multiple independent vacuum chambers with a vacuum main chamber, and through the connection of the vacuum interface with the vacuum pumping device and the vacuum monitoring accessories, the overall vacuum degree of the vacuum main chamber can be monitored and adjusted in real time.

[0005] When the medium in the pipeline is flowing, if the valve on the pipeline is suddenly closed, the fluid in the pipeline upstream of the valve will continue to move forward under the action of inertia and accumulate at the valve, which will cause impact on the inner wall of the pipeline at the valve. This is the "water hammer effect".

[0006] In the prior art, when a pipe with a vacuum insulation layer encounters the "water hammer effect", the inner wall of the pipe will be subjected to the impact force of the fluid in the pipe and the force of the vacuum insulation layer at the same time. The two forces are in the same direction, making it easy for the pipe to deform under the dual forces. Summary of the invention

[0007] The object of the present invention is to provide a high-performance cooling and heating insulation pipe to solve the above-mentioned deficiencies in the prior art.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A high-performance cooling and heating insulation pipeline comprises a coaxially arranged flow pipe and a vacuum insulation pipe, wherein the flow pipe is provided with a valve for opening or closing the flow pipe, and further comprises:

[0010] an overpressure protection mechanism, which inflates the vacuum insulation tube when the valve is closed;

[0011] The materials of the flow tube and the vacuum insulation tube are both materials with a thermal conductivity of less than 0.3W / mk.

[0012] The above-mentioned high-performance cooling and heating insulation pipeline, the overpressure protection mechanism includes a vacuum pump and a ventilation component whose output end is connected to the vacuum insulation pipe.

[0013] The above-mentioned high-performance cooling and heating insulation pipe, the ventilation component includes a ventilation hole and a first sphere constructed on the outer wall of the vacuum insulation pipe, and also includes a first elastic member for forcing the first sphere to block the ventilation hole.

[0014] The above-mentioned high-performance cooling and heating insulation pipe has a movable groove constructed on the first sphere, and a movable rod is slidably connected to the outer wall of the vacuum insulation pipe. The movable rod is located in the movable groove, and a first wedge-shaped portion is constructed on the movable rod, and a second wedge-shaped portion is constructed on the inner wall of the movable groove.

[0015] The above-mentioned high-performance cooling and heating insulation pipeline, the valve includes a main body and a driving shaft rotatably connected in the main body, and a valve plate is fixed on the driving shaft.

[0016] In the above-mentioned high-performance cooling, heating and heat-insulating pipe, a first connecting rod is fixed on the driving shaft, a second connecting rod is hinged on the first connecting rod, and the second connecting rod is hinged to the movable rod.

[0017] In the above-mentioned high-performance cooling and heating insulation pipe, during the process of closing the valve, the first wedge-shaped portion and the second wedge-shaped portion collide with each other and then separate.

[0018] In the above-mentioned high-performance cooling and heating insulation pipe, the inner wall of the flow tube is configured with a circulation channel, and the two ends of the circulation channel are respectively configured with a first through hole and a second through hole.

[0019] In the above-mentioned high-performance cooling and heating insulation pipe, a blocking component is provided at the first through hole, and a non-return component is provided at the second through hole.

[0020] In the above-mentioned high-performance cooling and heating insulation pipe, the non-return assembly includes a second sphere and a second elastic member arranged at the second through hole.

[0021] In the above technical scheme, the present invention provides a high-performance cooling and heating insulation pipe. When the valve is closed, the vacuum insulation pipe can be inflated through the overpressure protection mechanism to increase the pressure inside the vacuum insulation pipe, thereby reducing the pressure difference between the inner and outer walls of the flow pipe, and minimizing the deformation of the flow pipe with a vacuum insulation layer under the "water hammer effect".

[0022] By selecting the materials for the flow pipe and vacuum insulation pipe, the thermal conductivity of the overall pipeline is less than 0.3W / mk, which significantly reduces the heat loss of the pipeline, improves the overall energy efficiency, and achieves energy-saving effects; after the thermal conductivity of the overall pipeline is reduced, the durability and reliability of the pipeline are effectively enhanced, the maintenance cost is reduced, and the service life is extended; through overpressure protection design and the application of high-efficiency materials, the insulated pipeline has significant advantages in heat retention, cost savings, environmental protection and other aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a drive shaft structure provided by yet another embodiment of the present invention;

[0026] Figure 3 A schematic diagram of a first spherical structure provided in yet another embodiment of the present invention;

[0027] Figure 4 A schematic structural diagram of a first wedge-shaped portion provided in yet another embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a circulation channel structure provided by another embodiment of the present invention;

[0029] Figure 6 A cross-sectional view of a circulation channel provided in another embodiment of the present invention;

[0030] Figure 7 Another embodiment of the present invention provides Figure 6 The enlarged structural diagram at A in the middle;

[0031] Figure 8 Another embodiment of the present invention provides Figure 6 The enlarged structural diagram at B in the middle;

[0032] Fig. 9 A schematic diagram of a valve closing structure provided in another embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Flow tube; 2. Vacuum insulation tube; 3. Valve; 4. Vent; 5. First sphere; 6. First elastic member; 7. Movable rod; 8. First wedge-shaped portion; 9. Second wedge-shaped portion; 10. Main body; 11. Drive shaft; 12. Valve plate; 13. First connecting rod; 14. Second connecting rod; 15. Circulation channel; 16. First through hole; 17. Second through hole; 18. Second sphere; 19. Second elastic member; 20. Sealing ring; 21. Articulated rod; 22. Connecting rod; 23. Sliding block; 24. Third sphere; 25. Third elastic member. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1-Figure 9 An embodiment of the present invention provides a high-performance cooling and heating insulation pipeline, including a coaxially arranged flow tube 1 and a vacuum insulation tube 2, wherein the flow tube 1 is provided with a valve 3 for opening or closing the flow tube 1, and also includes an overpressure protection mechanism. When the valve 3 is closed, the overpressure protection mechanism inflates the vacuum insulation tube 2, and the flow tube and the vacuum insulation tube are both made of materials with a thermal conductivity of less than 0.3W / mk.

[0037] Specifically, for the thermal insulation layer, the lower the air density therein, the smaller the thermal conductivity. Obviously, the thermal insulation effect of the vacuum insulation layer is better than that of the normal air insulation layer. The innovation of the embodiment of the present invention is that the vacuum insulation tube 2 is sleeved outside the flow tube 1, the flow tube 1 and the vacuum insulation tube 2 are coaxially arranged and relatively fixed, the flow tube 1 is used to transport the medium, and a vacuum insulation layer is formed between the vacuum insulation tube 2 and the flow tube 1 to insulate the flow tube 1; the overpressure protection mechanism can be a pressure valve, when the pressure valve is opened, a pressure difference is formed inside and outside the vacuum insulation tube 2, so that the outside air passively enters between the vacuum insulation tube 2 and the flow tube 1, so as to inflate the vacuum insulation layer; when the valve 3 on the flow tube 1 is closed, the fluid upstream of the valve 3 will impact the inner wall of the flow tube 1 at the valve 3, at this time, the overpressure protection mechanism operates to inflate the vacuum insulation tube 2 (that is, the vacuum insulation layer), thereby increasing the pressure in the vacuum insulation layer, and then reducing the pressure difference between the inner wall and the outer wall of the flow tube 1, and trying to avoid the flow tube 1 with the vacuum insulation layer from deforming under the "water hammer effect".

[0038] By selecting the materials of the flow pipe and the vacuum insulation pipe, the thermal conductivity of the overall pipeline is made less than 0.3W / mk, which significantly reduces the heat loss of the pipeline, improves the overall energy efficiency, and achieves energy-saving effects; after the thermal conductivity of the overall pipeline is reduced, the durability and reliability of the pipeline are effectively enhanced, the maintenance cost is reduced, and the service life is extended; through the overpressure protection design and the application of high-efficiency materials, the insulated pipeline has significant advantages in heat energy retention, cost savings, environmental protection and other aspects.

[0039] In each embodiment provided by the present invention, in order to further improve the energy-saving and heat-insulating performance of the pipeline, on the basis of the aforementioned vacuum insulation layer, the material of the vacuum insulation pipe 2 is preferably a material with a low thermal conductivity, such as PVC with a thermal conductivity of less than 0.2 or even rubber foam with a thermal conductivity of 0.05 to form a multi-layer composite insulation pipeline.

[0040] The benefits of such a setting are: first, reducing heat loss. By adopting insulation materials with ultra-low thermal conductivity, the pipeline in the embodiment of the present invention can control heat loss at a lower ratio, significantly improving the overall energy efficiency of the system; second, improving energy utilization. An effective insulation scheme makes the fluid temperature under the same conditions more stable, reduces the frequency of energy replenishment, thereby significantly improving energy utilization efficiency and ensuring that the system can operate efficiently with low energy consumption; third, extending the service life. By setting an overpressure protection mechanism, the pressure and impact resistance of the pipeline are improved, the overall service life is extended, and the replacement frequency and cost caused by aging and damage are reduced; fourth, reducing maintenance and operating costs. By reducing heat loss and improving operating efficiency, energy expenditures are significantly reduced. At the same time, after the life of the overall pipeline system is increased, maintenance costs will also decrease, saving operating costs as much as possible.

[0041] In another embodiment provided by the present invention, further, the overpressure protection mechanism includes a vacuum pump and a ventilation component whose output end is connected to the vacuum insulation pipe 2. Specifically, the output end of the vacuum pump extends between the vacuum insulation pipe 2 and the flow pipe 1, that is, the output end of the vacuum pump is connected to the vacuum insulation layer, so that the vacuum pump can extract the air in the vacuum insulation layer when it is running (this is the prior art, not shown in the figure, and will not be repeated); the ventilation component can use a structure similar to the above-mentioned pressure valve, so that the vacuum insulation layer can be connected to the outside when the ventilation component is opened. The advantage of such a setting is that when the valve 3 is closed, the ventilation component is opened to allow the outside air to passively flow into the vacuum insulation layer, thereby increasing the pressure in the vacuum insulation layer. When the valve 3 is opened, the ventilation component is closed to seal the vacuum insulation layer. At this time, the air in the vacuum insulation layer can be extracted by the vacuum pump, thereby reducing the pressure in the vacuum insulation layer, and then the vacuum insulation layer is restored to a state close to vacuum to insulate the flow pipe 1, which is conducive to the development of industrial energy-saving and insulation technology.

[0042] Preferably, the ventilation assembly includes a vent hole 4 and a first sphere 5 constructed on the outer wall of the vacuum insulation tube 2, and also includes a first elastic member 6 for forcing the first sphere 5 to block the vent hole 4. Specifically, the first sphere 5 is located on the side of the vent hole 4 away from the flow tube 1, and the first elastic member 6 uses a spring structure in the prior art, one end of which is fixed on the outer wall of the flow tube 1, and the other end passes through the vent hole 4 and is fixed to the first sphere 5. The first elastic member 6 is in a stretched state to force the first sphere 5 to approach and block the vent hole 4; such a configuration makes the vent hole 4 in a blocked state under normal conditions, and the vacuum insulation layer can be connected to the outside by removing the first sphere 5 from the vent hole 4 when needed.

[0043] Furthermore, a movable groove is constructed on the first sphere 5, and a movable rod 7 is slidably connected to the outer wall of the vacuum insulation tube 2. The movable rod 7 is located in the movable groove, and a first wedge-shaped portion 8 is constructed on the movable rod 7, and a second wedge-shaped portion 9 is constructed on the inner wall of the movable groove. Specifically, the movable groove is constructed on the side of the first sphere 5 away from the vent 4; a protrusion is constructed on the outer wall of the vacuum insulation tube 2, and the movable rod 7 is arranged along the axial direction of the vacuum insulation tube 2 and passes through the protrusion, so that the movable rod 7 can slide on the protrusion and in the movable groove at the same time; the first wedge-shaped portion 8 is constructed on the side of the movable rod 7 away from the vent 4, and the second wedge-shaped portion 9 is constructed on the top wall of the movable groove and is adapted to the first wedge-shaped portion 8; the advantage of such an arrangement is that when the valve 3 is opened, the movable rod 7 is on the side away from the valve 3. At this time, the first elastic member 6 drives the first sphere 5 to block the vent 4, and the movable rod 7 is relatively located above the movable groove. The first wedge-shaped portion 8 and the second wedge-shaped portion 9 are staggered (the two are basically at the same height). Figure 3 As shown; when the valve 3 is closed, the movable rod 7 is controlled to move closer to the valve 3 (a linear driving structure can be set on the outer wall of the vacuum insulation layer to drive the movable rod 7 to move, such as an electric push rod structure), so that the first wedge-shaped portion 8 contacts the second wedge-shaped portion 9, so as to force the second wedge-shaped portion 9 and the first sphere 5 to overcome the elastic force of the first elastic member 6 and move away from the vent 4, so that the vacuum insulation layer is connected with the outside, thereby increasing the pressure in the vacuum insulation layer; when the valve 3 is opened again, the movable rod 7 is controlled to reset to block the vent 4 again. At this time, the air in the vacuum insulation layer can be extracted by the vacuum pump to restore the vacuum insulation layer to a state close to vacuum to insulate the flow tube 1.

[0044] Furthermore, the valve 3 includes a main body 10 and a driving shaft 11 rotatably connected in the main body 10, and a valve plate 12 is fixed on the driving shaft 11. Specifically, the main body 10 is constructed as a tubular structure as a whole, and is integrally constructed with the flow tube 1 and the vacuum insulation tube 2. A flow channel is constructed in the main body 10, and the inner diameter of the flow channel is the same as the inner diameter of the flow tube 1, so that the fluid can flow through the flow tube 1 and the flow channel; the driving shaft 11 is rotatably connected in the flow channel, and when the driving shaft 11 rotates, it can drive the valve plate 12 to rotate to a state perpendicular to the flow channel and block the flow channel, and then the driving shaft 11 rotates 90 degrees again to open the flow channel. The valve 3 is a prior art and will not be described in detail here;

[0045] As an alternative solution for the above-mentioned linear drive structure to drive the movable rod 7 to move, preferably, a first connecting rod 13 is fixed to the driving shaft 11, a second connecting rod 14 is hinged to the first connecting rod 13, and the second connecting rod 14 is hinged to the movable rod 7. Specifically, the two ends of the movable rod 7 are hinged with the first connecting rod 13 and the second connecting rod 14 respectively. When the driving shaft 11 drives the valve plate 12 to rotate, the first connecting rod 13 rotates synchronously with the driving shaft 11 and drives the movable rod 7 to move axially along the vacuum insulation tube 2 through the second connecting rod 14; when the valve plate 12 is in a state of opening the flow channel, the first connecting rod 13, the second connecting rod 14 and the movable rod 7 are basically in the same straight line. At this time, the first wedge-shaped portion 8 is located on the side of the second wedge-shaped portion 9 away from the valve 3, and the first ball 5 is in a state of blocking the vent 4; when the driving shaft 11 drives the valve plate 12 to block the flow channel, the first connecting rod 13 rotates with the driving shaft 11 and drives the movable rod 7 to approach the valve 3 through the second connecting rod 14. During the process, the first wedge-shaped portion 8 resists the second wedge-shaped portion 9 to force the first ball 5 to open the vent 4. The advantage of such a configuration is that when the valve 3 is opened, the first sphere 5 blocks the vent 4, and the vacuum insulation layer is in a vacuum sealing state to insulate the flow tube 1; when the valve 3 is closed, the first sphere 5 can be passively forced to open the vent 4 through structures such as the movable rod 7, so that the vacuum insulation layer is connected to the outside world, thereby allowing outside air to enter the vacuum insulation layer to increase the pressure in the vacuum insulation layer, thereby minimizing deformation of the flow tube 1 under the "water hammer effect".

[0046] Furthermore, during the closing process of the valve 3 , the first wedge-shaped portion 8 and the second wedge-shaped portion 9 collide with each other and then separate. Specifically, in the above embodiment, until the valve 3 is closed, the first wedge-shaped portion 8 and the second wedge-shaped portion 9 still maintain the conflict to force the first sphere 5 to open the vent 4, which makes the vacuum insulation layer always in a state of communication with the outside world until the pressure of the vacuum insulation layer is the same as the outside pressure. Obviously, the entry of a certain amount of air into the vacuum insulation layer can effectively increase the pressure of the vacuum insulation layer, which can prevent the flow tube 1 from deforming under the "water hammer effect" without waiting for the pressure of the vacuum insulation layer to be the same as the outside pressure. For this purpose, the lengths of the first wedge-shaped portion 8 and the second wedge-shaped portion 9 are adjusted; in the process of closing the valve 3, the drive shaft 11 drives the movable rod 7 to approach the valve 3, and the first wedge-shaped portion 8 conflicts with the second wedge-shaped portion 9 to force the first sphere 5 to open the vent 4. Subsequently, the movable rod 7 continues to approach the valve 3, which causes the first wedge-shaped portion 8 to move to the side of the second wedge-shaped portion 9 close to the valve 3, so that the first sphere 5 loses the conflict of the first wedge-shaped portion 8 and blocks the vent 4 again (such as Figure 4 As shown), in this way, the pressure in the vacuum insulation layer can be maintained while the flow tube 1 is prevented from being deformed under the "water hammer effect" as much as possible.

[0047] In another embodiment provided by the present invention, further, the inner wall of the flow tube 1 is constructed with a circulation channel 15, and the two ends of the circulation channel 15 are respectively constructed with a first through hole 16 and a second through hole 17. A blocking component is arranged at the first through hole 16, and a check component is arranged at the second through hole 17. Specifically, the circulation channel 15 is filled with the same fluid as that in the flow tube 1; the circulation channel 15 is constructed on the inner wall of the flow tube 1 and is arranged along the axial direction of the flow tube 1, the first through hole 16 is constructed on the side of the circulation channel 15 close to the valve 3, and the second through hole 17 is constructed on the side of the circulation channel 15 away from the valve 3, that is, the second through hole 17 is upstream of the first through hole 16; the check component can select a one-way valve structure in the prior art, and by setting the check component, the fluid can flow into the flow tube 1 from the second through hole 17, while the fluid in the flow tube 1 cannot pass through the second through hole 17 and flow into the circulation channel 15; preferably, the check component includes a second sphere 18 and a second elastic member 19 arranged at the second through hole 17, such as Figure 6As shown, the second sphere 18 is outside the circulation channel 15 and inside the flow tube 1. The second elastic member 19 adopts a spring structure in the prior art, one end of which is fixed on the outer wall of the circulation channel 15 (fixed on the side of the circulation channel 15 close to the central axis of the flow tube 1), and the other end is fixed on the second sphere 18. The second elastic member 19 is in a stretched state to force the second sphere 18 to block the second through hole 17; when the fluid pressure in the circulation channel 15 is large, it can force the second sphere 18 to stay away from the second through hole 17 (overcoming the second elastic member 1 9 and the pressure of the fluid in the flow tube 1), so that the fluid in the circulation channel 15 passes through the second through hole 17 and flows into the flow tube 1; conversely, when the pressure of the fluid in the circulation channel 15 is insufficient, the second sphere 18 will adhere to and block the second through hole 17 under the action of the second elastic member 19, so that the fluid in the flow tube 1 cannot pass through the second through hole 17 and flow into the circulation channel 15; the blocking component can select a combination of a blocking plate and an electric push rod in the prior art, and the electric push rod structure can drive the blocking plate to block or open the first through hole 16. The advantage of such a configuration is that when the valve 3 is opened, the blocking component blocks the first through hole 16. At this time, the fluid in the flow tube 1 flows normally, and the first through hole 16 and the second through hole 17 are both in a blocked state; when the valve 3 is closed, the blocking component opens the first through hole 16. At this time, the fluid upstream of the valve 3 will accumulate at the valve 3 under the action of inertia and impact the flow tube 1 at the valve 3. Since the first through hole 16 is in an open state, the fluid accumulated at the valve 3 can enter the circulation channel 15 through the first through hole 16. When the fluid entering the circulation channel 15 increases, the check assembly The circulation channel 15 is opened under the action of the pressure of the fluid in the circulation channel 15 to allow the fluid in the circulation channel 15 to flow into the flow tube 1, so that the fluid accumulated at the valve 3 can flow upstream through the circulation channel 15, so that the fluid forms a circulation between the flow tube 1 and the circulation channel 15 to alleviate the impact force of the fluid on the inner wall of the flow tube 1 (the impact force is alleviated by resistance such as friction); until the valve 3 is opened, the blocking component blocks the first through hole 16 again, so that the fluid cannot continue to flow in the circulation channel 15, and accordingly, the check assembly resumes the blocking of the second through hole 17, so that the fluid can flow normally in the flow tube 1.

[0048] As an alternative solution for the above-mentioned electric push rod to drive the blocking plate to block the first through hole 16, preferably, the first through hole 16 is located at the end of the circulation channel 15 close to the valve 3, and the circulation channel 15 is provided with multiple ones along the circumference of the flow tube 1, and a blocking ring 20 is slidably connected in the flow channel. The blocking ring 20 is constructed in an annular shape, and its outer wall fits with the flow channel and has a certain sliding stroke in the flow channel. When the blocking ring 20 approaches and fits with multiple circulation channels 15, multiple first through holes 16 can be blocked at the same time through the blocking ring 20, and when the blocking ring 20 is away from the circulation channel 15, the blocking of multiple first through holes 16 can be released at the same time; the inner wall of the flow channel is hinged with a hinged rod 21, and the hinge A slide groove is configured at one end of the connecting rod 21, a connecting rod 22 is fixed on the blocking ring 20, a slider 23 adapted to the slide groove is configured at one end of the connecting rod 22 away from the blocking ring 20, a torsion spring is arranged between the hinged rod 21 and the inner wall of the flow tube 1, and the torsion spring can force the hinged rod 21 to approach the end of the connecting rod 22 to approach the first through hole 16; when the valve plate 12 is in a state of opening the flow channel, the end of the hinged rod 21 close to the connecting rod 22 approaches the first through hole 16 under the action of the torsion spring, thereby forcing the slider 23 and the connecting rod 22 to approach the first through hole 16 through the inner wall of the slide groove, thereby driving the blocking ring 20 to block multiple first through holes 16 at the same time; when the valve plate 12 rotates to the state of blocking the flow channel (such as Fig. 9 As shown in the figure, the valve plate 12 contacts the end of the hinged rod 21 away from the connecting rod 22, so as to force the hinged rod 21 to overcome the elastic force of the torsion spring and rotate (the inner wall of the flow channel is constructed with a groove body adapted to the hinged rod 21). During the process, the inner wall of the slide groove contacts the slider 23, so as to force the slider 23 to slide relatively in the slide groove and away from the first through hole 16, thereby driving the blocking ring 20 to release the blocking of multiple first through holes 16 at the same time; the advantage of such a setting is that when the valve 3 is opened, the blocking ring 20 passively blocks the multiple first through holes 16, so that the multiple circulation channels 15 are in a sealed state. When the valve 3 is closed, the valve plate 12 can passively drive the blocking ring 20 to release the blocking of multiple first through holes 16, so as to alleviate the impact force of the "water hammer effect" on the flow pipe 1.

[0049] Furthermore, a third sphere 24 and a third elastic member 25 are provided at the first through hole 16. The third sphere 24 is in the circulation channel 15. The third elastic member 25 adopts a spring structure in the prior art, one end of which is fixed on the inner wall of the circulation channel 15, and the other end is fixed on the third sphere 24. The third elastic member 25 is in a stretched state to force the third sphere 24 to block the first through hole 16. By providing the third sphere 24 and the third spring, the fluid can overcome the elastic force of the third spring to enter the circulation channel 15 through the first through hole 16, while the fluid in the circulation channel 15 cannot pass through the first through hole 16 to enter the flow tube 1. The advantage of such a setting is that when the blocking ring 20 blocks the first through hole 16, the circulation channel 15 is in a sealed state under the action of the second sphere 18 and the third sphere 24; when the valve 3 is closed, the blocking ring 20 passively releases the blocking of the first through hole 16, so that the fluid in the flow tube 1 can impact the third sphere 24 to overcome the elastic force of the third spring and enter the circulation channel 15, so that the fluid can form a circulation between the flow tube 1 and the circulation channel 15 to alleviate the impact force of the fluid on the inner wall of the flow tube 1; when the fluid in the flow tube 1 tends to be stable, the fluid in the flow tube 1 no longer accumulates at the valve 3, and the pressure returns to normal, so that the fluid in the flow tube 1 cannot overcome the elastic force of the third spring and enter the circulation channel 15 through the first through hole 16, that is, the circulation channel 15 is blocked again, so that the flow tube 1 and the circulation channel 15 are separated, and the circulation channel 15 is prevented from always being connected to the flow tube 1 to affect the subsequent operation of the fluid in the flow tube 1.

[0050] It should be noted that the ends of the vacuum insulation layer and the circulation channel 15 can be blocked by the main body 10 or the blocking plate structure, so that the vacuum insulation layer and the circulation channel 15 are in a sealed state.

[0051] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-performance cooling and heating insulation pipeline, comprising a coaxially arranged flow pipe and a vacuum insulation pipe, wherein the flow pipe is provided with a valve for opening or closing the flow pipe, characterized in that: Also includes: an overpressure protection mechanism, which inflates the vacuum insulation tube when the valve is closed; The materials of the flow tube and the vacuum insulation tube are both materials with a thermal conductivity of less than 0.3W / m .k; The overpressure protection mechanism includes a vacuum pump and a ventilation component whose output end is connected to the vacuum insulation pipe; The output end of the vacuum pump extends between the vacuum insulation tube and the flow tube; When the valve is closed, the ventilation component opens to allow outside air to passively flow into the vacuum insulation layer, thereby increasing the pressure in the vacuum insulation layer. When the valve is opened, the ventilation component closes to seal the vacuum insulation layer. At this time, the air in the vacuum insulation layer can be extracted by a vacuum pump, thereby reducing the pressure in the vacuum insulation layer, and then restoring the vacuum insulation layer to a state close to vacuum to insulate the flow pipe. The ventilation assembly comprises a ventilation hole and a first sphere constructed on the outer wall of the vacuum insulation tube, and also comprises a first elastic member for forcing the first sphere to block the ventilation hole.

2. A high-performance cooling and heating insulation pipe according to claim 1, characterized in that: A movable groove is configured on the first sphere, a movable rod is slidably connected to the outer wall of the vacuum insulation tube, the movable rod is located in the movable groove, a first wedge-shaped portion is configured on the movable rod, and a second wedge-shaped portion is configured on the inner wall of the movable groove.

3. A high-performance cooling and heating insulation pipeline according to claim 2, characterized in that: The valve comprises a main body and a driving shaft rotatably connected in the main body, and a valve plate is fixed on the driving shaft.

4. A high-performance cooling and heating insulation pipe according to claim 3, characterized in that: A first connecting rod is fixed on the driving shaft, a second connecting rod is hinged on the first connecting rod, and the second connecting rod is hinged to the movable rod.

5. A high-performance cooling and heating insulation pipe according to claim 2, characterized in that: During the closing process of the valve, the first wedge-shaped portion and the second wedge-shaped portion collide with each other and then separate.

6. A high-performance cooling and heating insulation pipe according to claim 3, characterized in that: The inner wall of the flow tube is configured with a circulation channel, and both ends of the circulation channel are respectively configured with a first through hole and a second through hole.

7. A high-performance cooling and heating insulation pipe according to claim 6, characterized in that: A blocking component is disposed at the first through hole, and a non-return component is disposed at the second through hole.

8. A high-performance cooling and heating insulation pipeline according to claim 7, characterized in that: The non-return assembly includes a second ball and a second elastic member disposed at the second through hole.

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