Twist pipe sleeve type carbon dioxide air cooler structure

Abstract

The utility model relates to the technical field of transcritical CO2 heat pumps, and discloses a twisted tube sleeve type carbon dioxide air cooler structure which comprises an outer tube, a twisted tube is arranged on the inner wall of the outer tube, a first round head tube is arranged at the left end of the twisted tube, a second round head tube is arranged at the right end of the twisted tube, twisted lines are arranged on the outer wall of the twisted tube, and the twisted tube is arranged on the outer wall of the twisted tube. A rubber ring is fixedly connected to the inner wall of the second round head pipe, an insertion block is elastically connected to the inner wall of the second round head pipe through a movable spring, a rotating ring is elastically connected to the outer wall of the second round head pipe through a torsional spring, an arc-shaped block is fixedly connected to the inner wall of the rotating ring, and the first round head pipe makes contact with the outer wall of the rubber ring. According to the utility model, through the arrangement of the twisted lines on the twisted pipe, the twisted lines can destroy a fluid boundary layer and induce turbulent flow, and meanwhile, the spiral grooves can guide the fluid to generate secondary flow, so that the heat exchange interface is expanded, and the heat exchange efficiency and performance are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of transcritical CO2 heat pump technology, and in particular to a twisted tube-type carbon dioxide gas cooler structure. Background Technology

[0002] Traditional air coolers face problems such as low heat exchange efficiency, large pressure loss, large size, and poor temperature matching in transcritical CO2 heat pump systems. The application of traditional twisted tubes as air coolers in transcritical CO2 high-temperature heat pump systems is not flexible enough, and the heat exchange performance they provide cannot match the variable physical properties of transcritical CO2 well. Traditional twisted tubes have not implemented different structural adjustments for different operating conditions (such as temperature field, velocity field, etc.).

[0003] To improve the heat exchange efficiency of pipelines, the middle of a circular straight pipe is mechanically twisted into a braid shape. This special braided structure enhances fluid turbulence and improves heat exchange efficiency.

[0004] The existing technology has the following drawbacks: In the heat exchange structure of the existing twisted tube coaxial carbon dioxide gas cooler, the boundary layer is easily stabilized when the fluid flows inside the tube, resulting in poor turbulence. Furthermore, there is a lack of effective design to guide the fluid to generate secondary flow, which leads to a limited heat exchange interface. The heat exchange efficiency and performance need to be further improved. In addition, the traditional twisted tube connection method mostly adopts fixed connection or complex disassembly and assembly structure. Disassembly requires tools and the steps are cumbersome. Installation is also difficult to quickly and accurately connect, which brings inconvenience to the disassembly, maintenance and processing of twisted tubes and affects the operating efficiency. Therefore, a twisted tube coaxial carbon dioxide gas cooler structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a twisted tube-type carbon dioxide gas cooler structure, which aims to improve the problem of low heat exchange efficiency of traditional pipelines in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a twisted tube sleeve-type carbon dioxide gas cooler structure, including an outer tube, the inner wall of the outer tube being provided with a twisted tube, the left end of the twisted tube being provided with a round-head tube one, the right end of the twisted tube being provided with a round-head tube two, the outer wall of the twisted tube being provided with a twisted texture, and a rubber ring being fixedly connected to the inner wall of the round-head tube two.

[0007] As a further description of the above technical solution:

[0008] The inner wall of the second round-headed tube is elastically connected to an insert block via a movable spring, and the outer wall of the second round-headed tube is elastically connected to a rotating ring via a torsion spring. An arc-shaped block is fixedly connected to the inner wall of the rotating ring.

[0009] As a further description of the above technical solution:

[0010] The round-headed tube is in contact with the outer wall of the rubber ring.

[0011] As a further description of the above technical solution:

[0012] The outer side of the insert has a bevel, and the insert is inserted into the inner wall of the round-headed tube.

[0013] As a further description of the above technical solution:

[0014] The bottom end of the arc-shaped block contacts the upper surface of the insert block, and the insert block is slidably connected to the inner wall of the round-headed tube.

[0015] As a further description of the above technical solution:

[0016] The rotating ring is rotatably connected to the outer wall of the round-headed tube II.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, by setting the twisted pattern on the twisted tube, the twisted pattern can destroy the fluid boundary layer and induce turbulence. At the same time, the spiral groove can guide the fluid to generate secondary flow and expand the heat exchange interface, which significantly improves the heat exchange efficiency and performance.

[0019] 2. In this utility model, the insert block is separated by rotating the ring and driving the arc block. After being released, the torsion spring and the movable spring allow the components to return to their original positions. This allows for the quick separation of two sets of twisted tubes. During installation, the insert block automatically engages with the slot using the inclined surface and the movable spring, making it more convenient to install, disassemble, or process the twisted tubes. It also provides more options for assembly methods. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the overall structure of the outer tube of a twisted tube-type carbon dioxide gas cooler proposed in this utility model.

[0021] Figure 2 This is a cross-sectional view of the outer tube of a twisted tube-type carbon dioxide gas cooler structure proposed in this utility model.

[0022] Figure 3 This is a schematic diagram illustrating the twisted tube structure of a twisted tube-type carbon dioxide gas cooler proposed in this utility model.

[0023] Figure 4 This is a schematic diagram illustrating the insert block of a twisted tube sleeve-type carbon dioxide gas cooler structure proposed in this utility model.

[0024] Figure 5This is a detailed anatomical view of the twisted tube and rotating ring of a twisted tube sleeve-type carbon dioxide gas cooler structure proposed in this utility model.

[0025] Figure 6 This is an exploded view of the twisted tube and the round-headed tube of a twisted tube sleeve-type carbon dioxide gas cooler structure proposed in this utility model.

[0026] Figure 7 This is a schematic diagram of a round-headed tube in a spiral-tube type carbon dioxide gas cooler structure proposed in this utility model.

[0027] Legend:

[0028] 1. Outer tube; 2. Twisted tube; 3. Twisted pattern; 4. Insert block; 5. Movable spring; 6. Rotating ring; 7. Arc block; 8. Torsion spring; 9. Rubber ring; 10. Round-head tube one; 11. Round-head tube two. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-3 This utility model provides an embodiment of a twisted tube-type carbon dioxide gas cooler structure, including an outer tube 1 made of stainless steel. The inner wall of the outer tube 1 is provided with a twisted tube 2 made of copper. The left end of the twisted tube 2 is a round-headed tube 10, and the right end of the twisted tube 2 is a round-headed tube 21. The outer wall of the twisted tube 2 is provided with a twisted texture 3, which has a spiral groove structure. The twisted texture 3 can more effectively disrupt the fluid boundary layer and induce turbulence during fluid flow, thereby improving its heat exchange efficiency. A rubber ring 9 is fixedly connected to the inner wall of the round-headed tube 21. The round-headed tube 10 contacts the outer wall of the rubber ring 9. When the round-headed tube 10 contacts and squeezes the rubber ring 9, the rubber ring 9 deforms, so that the two sets of twisted tubes 2 are in a sealed state.

[0031] Reference Figures 3-5The inner wall of the round-headed tube 11 is elastically connected to the insert block 4 via a movable spring 5. When the insert block 4 moves downward, the movable spring 5 is compressed. When resetting, the elastic force of the movable spring 5 is used to reset the insert block 4. The outer wall of the round-headed tube 11 is elastically connected to the rotating ring 6 via a torsion spring 8. When the rotating ring 6 rotates clockwise, the torsion spring 8 is compressed. When resetting, the elastic force of the torsion spring 8 is used to reset the rotating ring 6. The inner wall of the rotating ring 6 is fixedly connected to the arc-shaped block 7.

[0032] Reference Figures 5-7 The outer side of the insert 4 is provided with a bevel. When the round-headed tube 10 presses the bevel, the insert 4 moves closer together. The insert 4 is inserted into the inner wall of the round-headed tube 10. The round-headed tube 10 has a slot corresponding to the insert 4. The insert 4 is slidably connected to the inner wall of the round-headed tube 21. The round-headed tube 21 has a slot corresponding to the insert 4, so that the insert 4 can move vertically. The bottom end of the arc-shaped block 7 contacts the upper surface of the insert 4. When the arc-shaped block 7 presses the insert 4, the insert 4 moves closer together. The rotating ring 6 is rotatably connected to the outer wall of the round-headed tube 21. The round-headed tube 21 has a slot corresponding to the rotating ring 6, so that the rotating ring 6 can rotate.

[0033] Working principle: When the twisted tube 2 needs to be disassembled, manually rotate the rotating ring 6 clockwise. The rotating ring 6 will compress the torsion spring 8, and at the same time, the rotating ring 6 will rotate the arc-shaped block 7. When the arc-shaped block 7 contacts and compresses the insert 4, the multiple sets of insert 4 will move closer together. When the insert 4 separates from the groove on the round-head tube 10 of another set of twisted tubes 2, manually remove the other set of twisted tubes 2. Then manually release the rotating ring 6. Under the elastic force of the torsion spring 8, the rotating ring 6 will move back to the initial position, and at the same time, the insert 4 will no longer be connected to the other set of round-head tubes 10. When the insertion block 4 is moved to the initial position by the elastic force of the movable spring 5, the insertion block 4 on one set of round-head tubes 11 is manually aligned and inserted into the groove of another set of round-head tubes 10. When the groove of the other set of round-head tubes 10 contacts and presses the inclined surface of the insertion block 4, the insertion blocks 4 are brought together and press the movable spring 5. When the insertion block 4 coincides with the groove of the round-head tube 10, the insertion block 4 is inserted into the groove of the round-head tube 10 by the elastic force of the movable spring 5, thus completing the splicing of the two sets of twisted tubes 2.

[0034] The twisted patterns 3 on the twisted tube 2 can more effectively disrupt the fluid boundary layer and induce turbulence during fluid flow, thereby improving its heat transfer efficiency. Secondly, the additional tangential velocity field is added when the fluid flows by using the spiral grooves to guide the fluid flow, causing the fluid to deflect in an orderly manner and inducing the generation of secondary flow. At the same time, the heat exchange interface is expanded, effectively enhancing its heat transfer performance.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spiral tube-type carbon dioxide gas cooler structure, comprising an outer tube (1), characterized in that: The inner wall of the outer tube (1) is provided with a twisted tube (2), the left end of the twisted tube (2) is provided with a round-head tube one (10), the right end of the twisted tube (2) is provided with a round-head tube two (11), the outer wall of the twisted tube (2) is provided with a twisted texture (3), and a rubber ring (9) is fixedly connected to the inner wall of the round-head tube two (11).

2. The structure of a twisted tube-type carbon dioxide gas cooler according to claim 1, characterized in that: The inner wall of the round-headed tube 2 (11) is elastically connected to the insert block (4) by a movable spring (5), and the outer wall of the round-headed tube 2 (11) is elastically connected to the rotating ring (6) by a torsion spring (8). The inner wall of the rotating ring (6) is fixedly connected to the arc-shaped block (7).

3. The structure of a twisted tube-type carbon dioxide gas cooler according to claim 1, characterized in that: The round-headed tube (10) is in contact with the outer wall of the rubber ring (9).

4. The structure of a twisted tube-type carbon dioxide gas cooler according to claim 2, characterized in that: The outer side of the insert (4) is provided with a slope, and the insert (4) is inserted into the inner wall of the round-headed tube (10).

5. The structure of a twisted tube-type carbon dioxide gas cooler according to claim 2, characterized in that: The bottom end of the arc-shaped block (7) is in contact with the upper surface of the insert block (4), and the insert block (4) is slidably connected to the inner wall of the round-headed tube (11).

6. The structure of a twisted tube-type carbon dioxide gas cooler according to claim 2, characterized in that: The rotating ring (6) is rotatably connected to the outer wall of the round-headed tube (11).

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