Pipe-in-pipe type vacuum pipe heat sealing device

Abstract

The utility model relates to the technical field of vacuum tubes, in particular to a tube-in-tube type vacuum tube heat sealing device which comprises an outer vacuum tube and a gas heating body outlet, one side of the outer vacuum tube is fixedly connected with the gas heating body outlet, the inner side of the outer vacuum tube is fixedly connected with a soft plastic sheet, and the inner side of the soft plastic sheet is fixedly connected with an inner vacuum tube. A plurality of flow channels are formed in the inner side of the outer vacuum tube, the inner side of the outer vacuum tube is attached to the outer side of the limiting assembly, the top end of the limiting assembly is fixedly connected with a spring, and the top end of the spring is fixedly connected with a buffering assembly. And meanwhile, the device has a certain buffering effect when heat is added and stored, collision between the outer vacuum tube and the inner vacuum tube caused by external force is prevented, and when heat is collected, the inner vacuum tube can be fixed, and the inner vacuum tube and the outer vacuum tube are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum tubes, in particular to a heat sealing device for tube-in-tube vacuum tubes. Background Technique

[0002] The heat sealing device for tube-in-tube vacuum tubes is a manufacturing device for vacuum tubes in solar collectors. Its main function is to seal the vacuum tubes in a vacuum environment to ensure a high vacuum degree inside the tubes, thereby improving the heat collection efficiency and heat preservation performance. The development of this technology helps to promote the progress of solar thermal utilization technology and meet the market demand for efficient and environmentally friendly energy products.

[0003] Most traditional vacuum tubes are of independent structure. When heating the water inside the water tank, the hot gas flow efficiency inside the vacuum tubes is slow, and even the heat inside the vacuum tubes cannot be fully utilized, reducing the heating efficiency and wasting heat energy. Therefore, a heat sealing device for tube-in-tube vacuum tubes is proposed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heat sealing device for tube-in-tube vacuum tubes to solve the problems that most traditional vacuum tubes are of independent structure, when heating the water inside the water tank, the hot gas flow efficiency inside the vacuum tubes is slow, and even the heat inside the vacuum tubes cannot be fully utilized, reducing the heating efficiency and wasting heat energy.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heat sealing device for tube-in-tube vacuum tubes, including an outer vacuum tube and a gas-heat body outlet. One side of the outer vacuum tube is fixedly connected with the gas-heat body outlet. The inner side of the outer vacuum tube is fixedly connected with a flexible plastic sheet. The inner side of the flexible plastic sheet is fixedly connected with an inner vacuum tube. The inner side of the outer vacuum tube is provided with multiple flow channels. The inner side of the outer vacuum tube is in contact with the outer side of a limit component. The top of the limit component is fixedly connected with a spring. The top of the spring is fixedly connected with a buffer component. The inner side of the outer vacuum tube is fixedly connected with a flexible plastic sheet. The limit component includes a hollow disk. The outer side of the hollow disk is fixedly connected with a silica gel sealing ring. The inner side of the hollow disk is fixedly connected with a silica gel round sheet. A through channel is opened in the inner side of the hollow disk. The top of the hollow disk is fixedly connected with a hollow guide rod. A hot gas through port is opened in the inner side of the hollow guide rod. The buffer component includes an outer fixing ring. The inner side of the outer fixing ring is fixedly connected with a silica gel buffer column. One side of the silica gel buffer column is fixedly connected with an inner fixing ring. The bottom end of the inner fixing ring is fixedly connected with a guiding conical shell. A limiting hole is opened in the inner side of the inner fixing ring. The top of the outer fixing ring is fixedly connected with a spring telescopic rod. The top of the spring telescopic rod is fixedly connected with a pressing plate. The bottom end of the pressing plate is fixedly connected with a silica gel buffer sheet.

[0007] As a further optimized content of this utility model, specifically: the upper part of the outer vacuum tube is a through tube, the lower part of the outer vacuum tube is several branch tubes, the inner side of the multi-channel is communicated with the inner side of the gas heat body outlet, the structure of the inner vacuum tube is the same as that of the outer vacuum tube, the rear end of the inner vacuum tube protrudes from the rear end of the outer vacuum tube, the rear end of the inner vacuum tube is penetrated and opened, the bottom end of the inner vacuum tube is penetrated and opened, the inner side of the inner vacuum tube is communicated with the inside of the multi-channel, and a hollow limiting piece is installed at the bottom end of the inner vacuum tube.

[0008] As a further optimized content of this utility model, specifically: the inner side of the soft plastic sheet is hollowed out, the soft plastic sheet is fixed at the rear end of the outer vacuum tube, the inner vacuum tube and the outer vacuum tube are sealed by the soft plastic sheet, the number of the soft plastic sheets is two, the soft plastic sheets are fixed on the inner sides of the front end and the rear end of the outer vacuum tube, and holes are opened on the inner side of the front soft plastic sheet.

[0009] As a further optimized content of this utility model, specifically: the hollow disk is attached to the inner side of the outer vacuum tube through a silica gel sealing ring, the hollow disk is fixedly connected to the outer side of the inner vacuum tube through a silica gel round sheet, the shape of the hollow disk is a hollow cylinder, the diameter of the inner groove of the hollow disk is larger than the diameter of the lower end of the inner vacuum tube, and a space is provided between the silica gel round sheet and the outer side of the lower part of the inner vacuum tube.

[0010] As a further optimized content of this utility model, specifically: the number of the through channels corresponds to the number of the hollow guide rods one by one, the shape of the hollow guide rods is a hollow cylinder, the bottom end of the hollow guide rods is penetrated and opened, the inner side of the hollow guide rods is communicated with the hot gas through port, the inner side of the hollow guide rods is communicated with the through channels, and the outer sides of the hollow guide rods slide inside the limiting holes.

[0011] As a further optimized content of this utility model, specifically: the outer side of the outer fixing ring is fixedly connected to the inner side of the outer vacuum tube, the inner side of the inner fixing ring is fixedly connected to the outer side of the inner vacuum tube, the shapes of the inner fixing ring and the outer fixing ring are both hollow cylinders, a space is provided between the inner fixing ring and the outer fixing ring, and the number of the silica gel buffer columns is several.

[0012] As a further optimized content of this utility model, specifically: the bottom end of the silica gel buffer sheet is attached to the top end of the limiting hole, the diameter of the silica gel buffer sheet is larger than the diameter of the limiting hole, the shape of the guiding conical shell is a hollow cone, the number of the guiding conical shells corresponds to the number of the hollow guide rods one by one, and the guiding conical shell and the hollow guide rod are on the same vertical line.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this utility model, through the externally arranged vacuum tube, internally arranged vacuum tube, limiting component, spring, buffer component and flexible plastic sheet, the device can quickly and fully utilize the heat collected inside the externally arranged vacuum tube and internally arranged vacuum tube, improve the heating efficiency of the device, reduce the waste of thermal energy. At the same time, the device has a certain buffering effect when storing heat, preventing the externally arranged vacuum tube and internally arranged vacuum tube from colliding due to external forces. When collecting heat, it can fix the internally arranged vacuum tube to prevent damage to the internally arranged vacuum tube and externally arranged vacuum tube. Description of the Drawings

[0015] Figure 1 Schematic diagram of the overall structure of this utility model;

[0016] Figure 2 Schematic diagram of the externally arranged vacuum tube structure of this utility model;

[0017] Figure 3 Schematic diagram of the internally arranged vacuum tube structure of this utility model;

[0018] Figure 4 Schematic diagram of the spring structure of this utility model;

[0019] Figure 5 Schematic diagram of the limiting component structure of this utility model;

[0020] Figure 6 Schematic diagram of the buffer component structure of this utility model;

[0021] Figure 7 For this utility model Figure 6 Schematic diagram of the structure at position A.

[0022] In the figure: 1. Externally arranged vacuum tube; 2. Internally arranged vacuum tube; 3. Gas-heat body outlet; 4. Multi-channel; 5. Limiting component; 51. Hollow disk; 52. Silicone sealing ring; 53. Silicone round sheet; 54. Through channel; 55. Hollow guide rod; 56. Hot gas vent; 6. Spring; 7. Buffer component; 71. Outer fixing ring; 72. Silicone buffer column; 73. Inner fixing ring; 74. Guide cone shell; 75. Limit hole; 76. Spring telescopic rod; 77. Pressing plate; 78. Silicone buffer sheet; 8. Flexible plastic sheet. Detailed Implementation Manner

[0023] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of this utility model.

[0024] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Please refer to Figures 1-7 , the present utility model provides a technical solution:

[0026] A tube-in-tube vacuum tube heat sealing device, including an outer vacuum tube 1 and a gas-heat body outlet 3. One side of the outer vacuum tube 1 is fixedly connected to the gas-heat body outlet 3. The inner side of the outer vacuum tube 1 is fixedly connected to a flexible plastic sheet 8. The inner side of the flexible plastic sheet 8 is fixedly connected to an inner vacuum tube 2. A multi-channel 4 is opened on the inner side of the outer vacuum tube 1. The inner side of the outer vacuum tube 1 is attached to the outer side of a limiting component 5. The top of the limiting component 5 is fixedly connected to a spring 6. The top of the spring 6 is fixedly connected to a buffer component 7. The inner side of the outer vacuum tube 1 is fixedly connected to a flexible plastic sheet 8. The limiting component 5 includes a hollow disc 51. The outer side of the hollow disc 51 is fixedly connected to a silica gel sealing ring 52. The inner side of the hollow disc 51 is fixedly connected to a silica gel disc 53. A through-channel 54 is opened on the inner side of the hollow disc 51. The top of the hollow disc 51 is fixedly connected to a hollow guide rod 55. A hot gas through-port 56 is opened on the inner side of the hollow guide rod 55. The buffer component 7 includes an outer fixing ring 71. The inner side of the outer fixing ring 71 is fixedly connected to a silica gel buffer column 72. One side of the silica gel buffer column 72 is fixedly connected to an inner fixing ring 73. The bottom end of the inner fixing ring 73 is fixedly connected to a guiding conical shell 74. A limiting hole 75 is opened on the inner side of the inner fixing ring 73. The top of the outer fixing ring 71 is fixedly connected to a spring telescopic rod 76. The top of the spring telescopic rod 76 is fixedly connected to a pressing plate 77. The bottom end of the pressing plate 77 is fixedly connected to a silica gel buffer sheet 78.

[0027] As a further implementation of this solution, the upper part of the outer vacuum tube 1 is a through-tube, and the lower part of the outer vacuum tube 1 is several branch tubes. The inner side of the multi-channel 4 is communicated with the inner side of the gas-heat body outlet 3. The structure of the inner vacuum tube 2 is the same as that of the outer vacuum tube 1. The rear end of the inner vacuum tube 2 protrudes from the rear end of the outer vacuum tube 1. The rear end of the inner vacuum tube 2 is through-opened. The bottom end of the inner vacuum tube 2 is through-opened. The inner side of the inner vacuum tube 2 is communicated with the inside of the multi-channel 4. A hollow limiting piece is installed at the bottom end of the inner vacuum tube 2 to facilitate the gas to enter from the inner vacuum tube 2 and flow out through the multi-channel 4 from the gas-heat body outlet 3, improving the heat collection efficiency;

[0028] As a further implementation of this solution, the inner side of the flexible plastic sheet 8 is hollowed out. The flexible plastic sheet 8 is fixed to the rear end of the outer vacuum tube 1. The inner vacuum tube 2 and the outer vacuum tube 1 are sealed by the flexible plastic sheet 8. The number of flexible plastic sheets 8 is two. The flexible plastic sheets 8 are fixed to the inner sides of the front end and the rear end of the outer vacuum tube 1. A hole is opened in the inner side of the front flexible plastic sheet 8 to improve the installation stability of the inner vacuum tube 2. At the same time, the rear end of the outer vacuum tube 1 and the rear end of the inner vacuum tube 2 are sealed, so that gas can flow normally at the front end of the multi-channel 4;

[0029] As a further implementation of this solution, the hollow disk 51 is attached to the inner side of the outer vacuum tube 1 through a silicone sealing ring 52. The hollow disk 51 is fixedly connected to the outer side of the inner vacuum tube 2 through a silicone wafer 53. The shape of the hollow disk 51 is a hollow cylinder. The diameter of the inner groove of the hollow disk 51 is larger than the diameter of the lower end of the inner vacuum tube 2. There is a space between the silicone wafer 53 and the outer side of the lower part of the inner vacuum tube 2. When the hollow disk 51 moves, it drives the silicone wafer 53 to deform. The silicone wafer 53 serves to seal between the hollow disk 51 and the inner vacuum tube 2;

[0030] As a further implementation of this solution, the number of through channels 54 corresponds one-to-one with the number of hollow guide rods 55. The shape of the hollow guide rod 55 is a hollow cylinder. The bottom end of the hollow guide rod 55 is penetrated and opened. The inner side of the hollow guide rod 55 is communicated with the hot gas vent 56. The inner side of the hollow guide rod 55 is communicated with the through channel 54. The outer side of the hollow guide rod 55 slides inside the limiting hole 75, which facilitates the hollow guide rod 55 to slide inside the limiting hole 75, thereby limiting the position between the outer vacuum tube 1 and the inner vacuum tube 2;

[0031] As a further implementation of this solution, the outer fixing ring 71 is fixedly connected to the inner side of the outer vacuum tube 1, and the inner fixing ring 73 is fixedly connected to the outer side of the inner vacuum tube 2. The shapes of the inner fixing ring 73 and the outer fixing ring 71 are both hollow cylinders. There is a space between the inner fixing ring 73 and the outer fixing ring 71. The number of silicone buffer columns 72 is several, which serves to buffer the outer vacuum tube 1 and the inner vacuum tube 2 when storing heat;

[0032] As a further implementation of this solution, the bottom end of the silicone buffer sheet 78 is attached to the top end of the limiting hole 75. The diameter of the silicone buffer sheet 78 is larger than the diameter of the limiting hole 75. The shape of the guiding conical shell 74 is a hollow cone. The number of guiding conical shells 74 corresponds one-to-one with the number of hollow guide rods 55. The guiding conical shell 74 and the hollow guide rod 55 are on the same vertical line, which serves to buffer the hollow guide rod 55 when the hollow guide rod 55 moves, and at the same time facilitates the gas to enter the gas heat outlet 3 from the multi-channel 4.

[0033] Workflow: During the use of the device, the outer vacuum tube 1 and the inner vacuum tube 2 can store the heat of the sun. When storing heat, the hollow guide rod 55 is away from the inside of the limit hole 75. Under the elastic force of the spring 6, the limit component 5 causes the hollow disc 51 to keep moving downward. At this time, the silica gel disc 53, the silica gel buffer column 72 and the flexible plastic sheet 8 play a role in buffering between the inner vacuum tube 2 and the outer vacuum tube 1, preventing the inner vacuum tube 2 and the outer vacuum tube 1 from colliding under the action of external forces, and improving the safety of the outer vacuum tube 1 and the inner vacuum tube 2. When it is necessary to collect the heat inside the outer vacuum tube 1 and the inner vacuum tube 2, gas is conveyed into the inner part of the inner vacuum tube 2 from the rear end of the inner vacuum tube 2. The gas enters the multi-channel 4 inside the lower part of the outer vacuum tube 1 from the inner vacuum tube 2. Under the action of air pressure, part of the gas enters the inside of the hollow guide rod 55 from the through-channel 54, enters the hot gas vent 56 from the hollow guide rod 55, enters the multi-channel 4 from the hot gas vent 56, flows out from the inside of the multi-channel 4 and into the air-heat body outlet 3, and then flows out from the inside of the air-heat body outlet 3, thus flowing into the solar water tank to achieve the purpose of heating and improve the effect of full utilization of heat. At the same time, part of the gas pushes the hollow disc 51. The hollow disc 51 is sealed with the inside of the outer vacuum tube 1 through the silica gel sealing ring 52. The inside of the hollow disc 51 is fixed to the outside of the inner vacuum tube 2 through the silica gel disc 53. At this time, the gas below the hollow disc 51 can only flow through the through-channel 54 and the inside of the silica gel disc 53. When flowing, the thrust of the gas can cause the hollow disc 51 and the hollow guide rod 55 to move. When the hollow guide rod 55 enters the limit hole 75, the hollow guide rod 55 squeezes the silica gel buffer sheet 78, and the spring telescopic rod 76 extends. The spring telescopic rod 76 plays a role in resetting the pressure plate 77 and the silica gel buffer sheet 78. The silica gel buffer sheet 78 and the spring telescopic rod 76 play a role in buffering the hollow guide rod 55. At this time, the hot gas vent 56 protrudes from the upper end of the inner fixing ring 73, and the gas enters the multi-channel 4 again to flow the heat inside the inner vacuum tube 2 and the multi-channel 4. At this time, the inner vacuum tube 2 can be fixed to prevent the inner vacuum tube 2 from shaking violently when the gas flows at high speed, and protect the safe use of the outer vacuum tube 1 and the inner vacuum tube 2.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube-in-tube type vacuum tube heat sealing device, comprising an outer vacuum tube (1) and a gas heat outlet (3), characterized in that: The outer vacuum tube (1) is fixedly connected to a gas heat outlet (3) on one side, the outer vacuum tube (1) is fixedly connected to a soft plastic sheet (8) on the inner side, the inner vacuum tube (2) is fixedly connected to the inner side of the soft plastic sheet (8), the inner side of the outer vacuum tube (1) is provided with multiple flow channels (4), the inner side of the outer vacuum tube (1) is in contact with the outer side of a limit assembly (5), the top of the limit assembly (5) is fixedly connected to a spring (6), the top of the spring (6) is fixedly connected to a buffer assembly (7), the limit assembly (5) comprises a hollow disk (51), the outer side of the hollow disk (51) is fixedly connected to a silicone sealing ring (52), the inner side of the hollow disk (51) is fixedly connected to a silicone disc (53), the inner side of the hollow disk (51) is provided with a through channel (4) (54), a hollow guide rod (55) is fixedly connected to the top of the hollow disk (51), a hot air vent (56) is provided on the inner side of the hollow guide rod (55), the buffer assembly (7) comprises an outer fixed ring (71), a silicone buffer column (72) is fixedly connected to the inner side of the outer fixed ring (71), one side of the silicone buffer column (72) is fixedly connected to the inner fixed ring (73), the bottom end of the inner fixed ring (73) is fixedly connected to a guide cone shell (74), a limited motion hole (75) is provided on the inner side of the inner fixed ring (73), the top end of the outer fixed ring (71) is fixedly connected to a spring telescopic rod (76), the top end of the spring telescopic rod (76) is fixedly connected to a pressure plate (77), and the bottom end of the pressure plate (77) is fixedly connected to a silicone buffer sheet (78).

2. The tube-in-tube vacuum tube heat sealing device according to claim 1, characterized in that: The upper part of the outer vacuum tube (1) is a through tube, the lower part of the outer vacuum tube (1) is a plurality of branch tubes, the inner side of the multi-channel (4) is connected to the inner side of the gas heat body outlet (3), the structure of the inner vacuum tube (2) is the same as that of the outer vacuum tube (1), the rear end of the inner vacuum tube (2) protrudes from the rear end of the outer vacuum tube (1), the rear end of the inner vacuum tube (2) is through-opened, the bottom end of the inner vacuum tube (2) is through-opened, the inner side of the inner vacuum tube (2) is connected to the inside of the multi-channel (4), and a hollow limit plate is installed at the bottom end of the inner vacuum tube (2).

3. The tube-in-tube type vacuum tube heat sealing device according to claim 1, characterized in that: The inner side of the soft plastic sheet (8) is hollow and opened. The soft plastic sheet (8) is fixed to the rear end of the outer vacuum tube (1). The inner vacuum tube (2) and the outer vacuum tube (1) are sealed by the soft plastic sheet (8). There are two soft plastic sheets (8). The soft plastic sheets (8) are fixed to the inner side of the front end and the rear end of the outer vacuum tube (1). A hole is opened on the inner side of the front end of the soft plastic sheet (8).

4. The tube-in-tube type vacuum tube heat sealing device according to claim 1, characterized in that: The hollow disk (51) is fitted to the inner side of the outer vacuum tube (1) via a silicone sealing ring (52), and the hollow disk (51) is fixedly connected to the outer side of the inner vacuum tube (2) via a silicone disc (53). The hollow disk (51) is in the shape of a hollow cylinder, and the diameter of the groove on the inner side of the hollow disk (51) is larger than the diameter of the lower end of the inner vacuum tube (2). A space is provided between the silicone disc (53) and the outer side of the lower part of the inner vacuum tube (2).

5. The tube-in-tube vacuum tube heat sealing device according to claim 1, characterized in that: The number of the through-channels (54) corresponds to the number of the hollow guide rods (55). The hollow guide rods (55) are in the shape of hollow cylinders. The bottom end of the hollow guide rods (55) is through-opened. The inner side of the hollow guide rods (55) is in communication with the hot air vent (56). The inner side of the hollow guide rods (55) is in communication with the through-channels (54). The outer side of the hollow guide rods (55) slides on the inner side of the stop hole (75).

6. The tube-in-tube type vacuum tube heat sealing device according to claim 1, characterized in that: The outer side of the outer fixing ring (71) is fixedly connected to the inner side of the outer vacuum tube (1), and the inner side of the inner fixing ring (73) is fixedly connected to the outer side of the inner vacuum tube (2). The inner fixing ring (73) and the outer fixing ring (71) are both hollow cylindrical in shape. A space is provided between the inner fixing ring (73) and the outer fixing ring (71). The number of the silica gel buffer columns (72) is several.

7. The tube-in-tube vacuum tube heat sealing device according to claim 1, characterized in that: The bottom end of the silicone buffer sheet (78) is in contact with the top end of the stop hole (75); the diameter of the silicone buffer sheet (78) is larger than the diameter of the stop hole (75); the guide cone shell (74) is in the shape of a hollow cone; the number of the guide cone shells (74) corresponds to the number of the hollow guide rods (55); and the guide cone shells (74) and the hollow guide rods (55) are on the same vertical line.

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