Refrigerant pipeline cabin penetrating mechanism for vacuum cabin
By employing a combination of through-chamber piping, refrigerant piping, and transfer piping within the vacuum chamber, the problem of poor cooling performance caused by heat conduction in the refrigerant piping was solved, achieving efficient sealing and cooling of the vacuum chamber.
Patent Information
- Application Number
- CN202423148976.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The refrigerant piping of the existing vacuum chamber is in direct contact with the chamber via flanges, resulting in a high thermal conductivity and poor cooling effect.
It adopts a combined structure of through-chamber piping, refrigerant piping and transfer piping, and uses metal transfer piping and connecting flanges to ensure sealing. Through welding and sealing rings, heat conduction and shaking are reduced.
It effectively reduces the thermal conductivity of the refrigerant pipeline, improving the sealing performance and cooling effect of the vacuum chamber.
Smart Images
Figure CN223549983U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum chamber refrigeration technology, specifically a refrigerant pipeline penetration mechanism for a vacuum chamber. Background Technology
[0002] Vacuum simulation chambers typically contain refrigeration equipment for simulating operations in specific temperature environments. During operation, refrigerant needs to be supplied to the refrigeration equipment to ensure its proper cooling effect. Existing supply structures often achieve this by using a supply pipeline that passes directly through the chamber wall. This pipeline is directly connected to the refrigerant pipeline via a flange. The refrigerant in the refrigerant pipeline comes into direct contact with the chamber through the flange and the supply pipeline. This results in a high thermal conductivity and a significant reduction in cooling efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a refrigerant pipeline penetration mechanism for a vacuum chamber, which can solve the technical problem of poor refrigeration effect mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a refrigerant pipeline penetration mechanism for a vacuum chamber, comprising a chamber connection part and a refrigerant pipeline connection part. The chamber connection part includes a penetration pipeline fixed to the wall of the vacuum chamber and a first connecting flange fixedly connected to the end of the penetration pipeline, the penetration pipeline extending outwards from the chamber. The refrigerant pipeline connection part includes a refrigerant pipeline body, a transfer pipeline surrounding the outside of the refrigerant pipeline body, and a second connecting flange connected to the end of the transfer pipeline and used to connect to the first connecting flange. The refrigerant pipeline body passes through the penetration pipeline and enters the interior of the vacuum chamber. The transfer pipeline is constructed in a frustum shape, one end fixedly connected to the refrigerant pipeline body, and the other end extending towards the distal end of the refrigerant pipeline body and fixedly connected to the end face of the second connecting flange.
[0005] In a preferred embodiment, a first sealing ring is connected between the first connecting flange and the second connecting flange to ensure the sealing of the connection between the two connecting flanges.
[0006] In a preferred embodiment, the transfer pipe is made of metal, and its two ends are welded to the outer wall of the refrigerant pipeline body and the end face of the second connecting flange, respectively. This connection method can improve the sealing performance of the vacuum chamber.
[0007] In a preferred embodiment, the transfer pipe is a metal bellows. By providing a bellows structure, deformation of the transfer pipe during the welding process can be prevented.
[0008] In a preferred embodiment, the gap between the refrigerant pipeline body and the through-chamber pipeline is set between 3-5 mm. This distance is set to prevent the refrigerant pipeline body from shaking and to prevent the refrigerant pipeline body from contacting the through-chamber pipeline.
[0009] In a preferred embodiment, a second sealing ring is further embedded between the inner wall of the first and / or second connecting flange and the refrigerant pipeline. This structure further ensures that the vacuum chamber remains sealed.
[0010] Compared with the prior art, the beneficial effects of this utility model are: the refrigerant pipeline penetration mechanism for vacuum chambers provided by this utility model, through the cooperation of the penetration pipeline, refrigerant pipeline, transfer pipeline and various connecting flanges, can effectively reduce the thermal conductivity of the refrigerant pipeline, and at the same time improve the reliability of the penetration pipeline seal, thus ensuring the airtightness of the vacuum chamber. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of the refrigerant pipeline penetration mechanism for the vacuum chamber in this embodiment of the present invention;
[0012] Figure 2 This is a front view of the refrigerant pipeline penetration mechanism for the vacuum chamber in this embodiment of the present invention;
[0013] Figure 3 for Figure 2 Sectional view along the AA direction.
[0014] The meanings of the labels in the diagram are as follows:
[0015] 1. Cabin connection; 11. Through-cabin piping; 12. First connecting flange; 2. Refrigeration piping connection; 21. Refrigerant piping body; 22. Transfer piping; 23. Second connecting flange. Detailed Implementation
[0016] 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.
[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] See Figures 1-3 This embodiment discloses a refrigerant pipeline penetration mechanism for a vacuum chamber. Through this mechanism, the refrigerant pipeline outside the chamber extends into the vacuum chamber and connects to the refrigeration equipment inside the chamber, while ensuring the airtightness of the vacuum chamber.
[0019] like Figure 1 As shown, the refrigerant pipeline penetration mechanism includes a compartment connection part 1 and a refrigerant pipeline connection part 2 that docks with it.
[0020] The chamber connection part 1 includes a through-chamber pipe 11 fixed to the chamber wall of the vacuum chamber and a first connecting flange 12 fixedly connected to the end of the through-chamber pipe 11. The through-chamber pipe 11 communicates with the interior of the chamber and extends from the chamber wall to the outside. To ensure the airtightness of the connection of the through-chamber pipe 11, it is preferable to weld the through-chamber pipe 11 to the chamber wall, or to integrally form the through-chamber pipe 11 during the production and processing of the vacuum chamber.
[0021] The refrigeration piping connection 2 includes a refrigerant piping body 21, a transfer pipe 22 surrounding the outside of the refrigerant piping body 21, and a second connecting flange 23 connected to the other end of the transfer pipe 22. The second connecting flange 23 is sleeved outside the refrigerant piping body 21. In this embodiment, the outer diameter of the refrigerant piping body 21 is slightly smaller than the inner diameter of the through-chamber pipe 11 and the first connecting flange 12, so that the refrigerant piping body 21 can pass through the through-chamber pipe 11 and enter the interior of the vacuum chamber.
[0022] The transfer pipe 22 is connected between the refrigerant pipe body 21 and the second connecting flange 23. Specifically, in this embodiment, the transfer pipe 22 is constructed as a frustum shape, which is sleeved on the outside of the refrigerant pipe body 21. One end is fixedly connected to the refrigerant pipe body 21, and the other end extends toward the distal end of the refrigerant pipe body 21 and is fixedly connected to the end face of the second connecting flange 23.
[0023] The second connecting flange 23 is used to connect with the first connecting flange 12, and its specifications are compatible with the first connecting flange 12. To ensure the sealing of the connection between the first connecting flange 12 and the second connecting flange 23, a first sealing ring (not shown in the figure) is also connected between the two connecting flanges.
[0024] In this embodiment, the transfer pipe 22 is made of metal. One end of it is welded to the outer wall of the refrigerant pipe body 21, and the other end is preferably welded to the end face of the second connecting flange 23. This connection method can improve the sealing performance of the vacuum chamber. Meanwhile, since the refrigerant pipe body 21 only has one circumferential welded connection point with the transfer pipe 22, the contact area is very small. Furthermore, there is a gap between the refrigerant pipe body 21 and the through-chamber pipe 11, with air in between. When simulating a low vacuum state inside the chamber, this gap in the pipe is also in a low vacuum state, resulting in a very low thermal conductivity coefficient, thus significantly reducing the thermal conductivity coefficient of the refrigerant pipe body 21. It should be noted that the gap between the refrigerant pipe body 21 and the through-chamber pipe 11 should not be too large to prevent the refrigerant pipe body 21 from shaking. At the same time, the gap should not be too small to prevent the refrigerant pipe body 21 from contacting the through-chamber pipe 11. A gap of 3-5 mm between the refrigerant pipe body 21 and the through-chamber pipe 11 is preferable.
[0025] In a preferred embodiment, the transfer pipe 22 is made of a metal bellows with a certain strength. Since the bellows has good flexibility and excellent guiding and retraction function, it can effectively prevent the transfer pipe 22 from deforming during the welding process.
[0026] To further ensure the airtightness of the vacuum chamber, a second sealing ring (not shown in the figure) is also embedded in the inner wall of the first connecting flange 12 and / or the second connecting flange 23. The second sealing ring acts between the first connecting flange 12 and / or the second connecting flange 23 and the refrigerant pipeline. This sealing structure, together with the transfer pipeline 22, can further ensure that the vacuum chamber is in a sealed state.
[0027] The refrigerant pipeline penetration mechanism for the vacuum chamber provided in this embodiment can effectively reduce the thermal conductivity of the refrigerant pipeline by cooperating with the penetration pipeline 11, the refrigerant pipeline, the transfer pipeline 22, and each connecting flange, while improving the sealing reliability of the penetration pipeline 11 and ensuring the sealing performance of the vacuum chamber.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A refrigerant piping penetration mechanism for a vacuum chamber, characterized in that, include: The cabin connection part (1) includes a through-cabin pipe (11) fixed on the cabin wall of the vacuum cabin and a first connecting flange (12) fixedly connected to the end of the through-cabin pipe (11), the through-cabin pipe (11) extending outward; The refrigeration pipeline connection part (2) includes a refrigerant pipeline body (21), a transfer pipeline (22) surrounding the outside of the refrigerant pipeline body (21), and a second connecting flange (23) connected to the end of the transfer pipeline (22) and used to connect to the first connecting flange (12). The refrigerant pipeline body (21) passes through the transom pipeline (11) and enters the interior of the vacuum chamber. One end of the transfer pipeline (22) is fixedly connected to the refrigerant pipeline body (21), and the other end extends toward the distal end of the refrigerant pipeline body (21) and is fixedly connected to the end face of the second connecting flange (23).
2. The refrigerant piping penetration mechanism according to claim 1, characterized in that, A first sealing ring is connected between the first connecting flange (12) and the second connecting flange (23).
3. The refrigerant piping penetration mechanism according to claim 1, characterized in that, The transfer pipe (22) is made of metal, and its two ends are respectively welded to the outer wall of the refrigerant pipeline body (21) and the end face of the second connecting flange (23).
4. The refrigerant pipeline penetration mechanism according to claim 3, characterized in that, The transfer pipe (22) is a metal bellows.
5. The refrigerant piping penetration mechanism according to claim 1, characterized in that, The gap between the refrigerant pipeline body (21) and the through-chamber pipeline (11) is set between 3-5 mm.
6. The refrigerant piping penetration mechanism according to claim 1, characterized in that, A second sealing ring is also embedded between the inner wall of the first connecting flange (12) and / or the second connecting flange (23) and the refrigerant pipeline.