A partition isolation structure of a cabin body for dual-mode thermal vacuum test

Abstract

The utility model relates to a cabin body partition isolation structure for dual mode thermal vacuum test belongs to aerospace engineering technical field, this cabin body partition isolation structure for dual mode thermal vacuum test, include: guide rail, isolation subassembly, the isolation subassembly includes the fixed type baffle of fixed connection in the top of guide rail, one end of fixed type baffle is connected with threaded column threadedly, the surface of threaded column is connected with the movable type baffle of guide rail sliding connection threadedly, fixed type baffle and movable type baffle fixed connection have high temperature resistance sealing washer, through the high temperature resistance sealing washer that sets up on fixed type baffle and movable type baffle, can maintain stable elastic sealing performance in extreme high low temperature cycle environment, effectively overcome the problem of resilience performance reduction caused by the thermal relaxation of sealing material, prevent the leakage of sealing interface, ensure that system vacuum keeping ability is reliable, solve the sealing failure problem in the background art.

Description

Technical Field

[0001] This utility model relates to the field of aerospace engineering technology, and in particular to a compartmentalized isolation structure for a dual-mode thermal vacuum test chamber. Background Technology

[0002] The dual-mode thermal vacuum test chamber adopts a movable partition structure, enabling flexible conversion between a unified chamber and independent compartments via a drive system. This structure integrates a sealing system and partitioned temperature-controlled heat sinks, supporting large-space testing of the entire satellite and parallel testing of multiple components. This significantly improves equipment utilization and testing efficiency, effectively reducing overall testing costs and shortening the cycle time.

[0003] The elastic sealing materials of current partitioned isolation structures undergo thermal relaxation of their molecular chain structure after extreme high and low temperature cycles, resulting in a significant reduction in their resilience and inability to maintain the necessary contact pressure. This leads to leakage at the sealing interface and severely affects the system's vacuum retention capability. Utility Model Content

[0004] Therefore, it is necessary to provide a partitioned isolation structure for a dual-mode thermal vacuum test chamber to address the problem that the elastic sealing material in the partitioned partition structure of the dual-mode thermal vacuum test chamber suffers from thermal relaxation after extreme temperature cycling, resulting in reduced resilience and leakage.

[0005] A dual-mode thermal vacuum test chamber partitioning structure includes: guide; An isolation assembly includes a fixed partition plate fixedly connected to the top of a guide rail. One end of the fixed partition plate is threadedly connected to a threaded post. A movable partition plate that is slidably connected to the guide rail is threadedly connected to the surface of the threaded post. A high-temperature resistant sealing ring is fixedly connected to the fixed partition plate and the movable partition plate.

[0006] In one embodiment, the isolation assembly further includes a partition frame, wherein the arc surfaces of the fixed partition, the movable partition, and the high-temperature sealing ring are all in contact with the inner side of the partition frame.

[0007] In one embodiment, the top of the guide rail and the inner side of the partition frame are provided with interconnected grooves, and the arc surface of the high-temperature resistant sealing ring is engaged with the inside of the groove.

[0008] In one embodiment, a threaded sleeve is fixedly connected to the inner side of the fixed partition, and the rod of the threaded column is threadedly connected to the threaded sleeve.

[0009] In one embodiment, the head of the threaded post is fixedly connected to an adjustment handle, the adjustment handle being cross-shaped.

[0010] In one embodiment, diagonal braces are fixedly connected to the opposite ends of both the fixed partition and the movable partition. The diagonal brace fixedly connected to the fixed partition is fixedly connected to the top of the guide rail, and the diagonal brace fixedly connected to the movable partition is attached to the top of the guide rail.

[0011] In one embodiment, the number of diagonal braces disposed at opposite ends of both the fixed and movable partitions is two, and two adjacent diagonal braces are symmetrically distributed on both sides of the threaded column.

[0012] In one embodiment, a ball bearing is embedded in the bottom of the diagonal brace, which is fixedly connected to the movable partition, and the arcuate surface of the ball bearing contacts the guide rail. Beneficial effects

[0013] 1. The above-mentioned dual-mode thermal vacuum test chamber partition isolation structure, through the high-temperature resistant sealing rings set on the fixed partition and the movable partition, can maintain stable elastic sealing performance in extreme high and low temperature cycling environments, effectively overcome the problem of reduced resilience performance caused by thermal relaxation of sealing materials, prevent leakage at the sealing interface, ensure reliable vacuum maintenance capability of the system, and solve the sealing failure problem in the background technology.

[0014] 2. By driving the movable bulkhead along the guide rail through the threaded column, the distance between the fixed bulkhead and the movable bulkhead can be precisely adjusted, thereby flexibly changing the cabin space configuration, supporting large-space testing of the entire satellite and parallel testing of multiple components, significantly improving equipment utilization and testing efficiency, and reducing the overall testing cost and cycle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the entire partition isolation structure installed inside the dual-mode thermal vacuum test chamber in this utility model; Figure 2 for Figure 1 Schematic sectional view along the middle AA direction; Figure 3 for Figure 1 Cross-sectional view along the middle BB direction; Figure 4 This is a schematic diagram of the entire partition isolation structure in this utility model; Figure 5 This is an exploded view of the entire partition isolation structure in this utility model.

[0017] Figure label: 100. Guide rail; 200. Isolation assembly; 210. Fixed partition; 220. Threaded post; 230. Movable partition; 240. High-temperature resistant sealing ring; 250. Divider frame; 260. Groove; 270. Threaded sleeve; 280. Adjustment handle; 290. Diagonal brace; 2100. Ball bearing. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The following is combined with Figure 1 - Figure 5 This invention describes the partitioned isolation structure of the chamber for dual-mode thermal vacuum testing.

[0020] In one embodiment, a dual-mode thermal vacuum test chamber partition isolation structure includes: Guide rail 100; The isolation assembly 200 includes a fixed partition 210 fixedly connected to the top of the guide rail 100. The fixed partition 210 provides a stable support point, ensuring the basic stability of the isolation structure and serving as the fixed end of the isolation barrier. One end of the fixed partition 210 is threadedly connected to a threaded post 220. A movable partition 230, which is slidably connected to the guide rail 100, is threadedly connected to the surface of the threaded post 220. This threaded connection allows for linear movement of the movable partition 230, enabling precise control of the partition spacing to adapt to different testing requirements. A high-temperature resistant sealing ring 240 is fixedly connected to both the fixed partition 210 and the movable partition 230. This sealing ring is made of high-temperature resistant material and maintains elastic sealing performance under thermal vacuum conditions, effectively forming an airtight isolation.

[0021] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the isolation assembly 200 also includes a partition frame 250, which serves as a support frame, enhancing the overall structural rigidity and distributing stress. The arc surfaces of the fixed partition 210, the movable partition 230, and the high-temperature resistant sealing ring 240 all contact the inner side of the partition frame 250, providing a uniform sealing surface. Interconnected grooves 260 are provided on the top of the guide rail 100 and the inner side of the partition frame 250. The arc surface of the high-temperature resistant sealing ring 240 engages with the interior of the groove 260. This design prevents the sealing ring from falling off under pressure or vibration, ensuring a stable sealing interface and improving installation accuracy.

[0022] like Figure 3 , Figure 4 and Figure 5 As shown, a threaded sleeve 270 is fixedly connected to the inner side of the fixed partition 210. The rod of the threaded post 220 is threadedly connected to the threaded sleeve 270. The threaded sleeve 270 provides a standard threaded interface, enhancing connection strength and stability, reducing thread wear, and the use of a single-opening threaded sleeve 270 also improves the separation and sealing effect of the entire partition isolation mechanism. An adjusting handle 280 is fixedly connected to the head of the threaded post 220. The adjusting handle 280 is cross-shaped, which provides good grip and leverage, making manual rotation effortless and precise without the need for additional tools.

[0023] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, diagonal braces 290 are fixedly connected to the opposite ends of both the fixed partition 210 and the movable partition 230. The diagonal brace 290 fixedly connected to the fixed partition 210 is fixedly connected to the top of the guide rail 100, and the diagonal brace 290 fixedly connected to the movable partition 230 is attached to the top of the guide rail 100. These diagonal braces 290 provide additional support, enhancing the bending strength and overall stability of the partition. Two diagonal braces 290 are provided at the opposite ends of both the fixed partition 210 and the movable partition 230, and adjacent diagonal braces 290 are symmetrically distributed on both sides of the threaded column 220. This symmetrical layout helps to distribute the load and reduce stress concentration. A ball bearing 2100 is embedded in the bottom of the diagonal brace 290 fixedly connected to the movable partition 230. The arc surface of the ball bearing 2100 contacts the guide rail 100, significantly reducing sliding friction resistance through point contact, making the movable partition 230 move more smoothly, and protecting the surface of the guide rail 100.

[0024] In this embodiment, the thermal vacuum environment simulation equipment from the Japanese brand ESPEC is a commonly used dual-mode thermal vacuum testing chamber. Its typical chamber body is a cylindrical or spherical vacuum container precision-welded from high-strength stainless steel. The chamber door is usually designed with a large opening and closing structure to facilitate the entry and exit of the specimen. The core of the chamber integrates two key systems: one is a liquid nitrogen heat sink system covering the inner wall of the chamber, which serves as a cold background for the entire test space; the other is an infrared heating cage system suspended inside the heat sink, which can be flexibly arranged according to the shape of the specimen, serving as an active heat source to simulate external heat flow. The entire system is comprehensively controlled by an external high-performance vacuum pumping unit and a central integrated control system.

[0025] When a standard thermal vacuum chamber needs to incorporate a partitioned isolation structure to expand its testing capabilities, a rigorous collaborative workflow is followed. In the test preparation phase, fixed and movable partitions are first installed on pre-set guide rails 100 within the chamber, dividing the original single chamber into multiple independent test spaces. Subsequently, technicians install dedicated infrared heating cages and temperature sensors for different components under test in each newly formed compartment. After all test pieces are in place and wiring is completed, the main chamber door is closed, and the vacuum system is activated to create a common high-vacuum environment for the entire container. Once the preset vacuum level is reached, the test enters its core phase: each partition independently runs its dedicated infrared heating cage test program under a unified cold background environment, enabling the parallel completion of multiple test tasks under different temperature conditions or thermal cycling modes within the same main chamber at the same time, ultimately maximizing equipment utilization and testing efficiency.

[0026] During the factory installation phase, the installation team must securely weld or fix the partition frame 250 to the predetermined central position inside the vacuum container. Subsequently, the guide rail 100 is precisely laid and fixed to the inner bottom wall of the container, ensuring its top surface is horizontal and its extension direction is strictly perpendicular to the plane of the partition frame 250. A key technical requirement in this step is that the two original vacuum ports on the container shell must be verified and ensured to be symmetrically separated on the left and right sides by the finally installed partition frame 250. This layout is fundamental to achieving a uniform high vacuum environment simultaneously in the two independent test areas. Finally, the diagonal brace 290, which is fixedly connected to the fixed partition 210, is fixedly connected to the top of the fixed partition 210 and the guide rail 100 to enhance structural stability.

[0027] Working Principle: During the test preparation phase, the operator first places the first set of test samples and their matching tooling on the guide rail 100 outside the chamber, with the fixed partition 210 facing inwards towards the container. The entire sample is then moved into the container until the inner contact surfaces of the fixed partition 210 and the partition frame 250 are fully aligned and tightly fitted. Next, the operator rotates the adjusting handle 280 clockwise, driving the threaded post 220 to screw into the threaded sleeve 270 fixed inside the fixed partition 210. This rotation forces the movable partition 230, threadedly connected to the threaded post 220, to slide smoothly along the guide rail 100 towards the fixed partition 210. The ball bearings 2100 installed at the bottom of the movable partition 230 effectively reduce frictional resistance during this process. The opposing movement of the two partitions together compresses the high-temperature resistant sealing ring 240 located between them, causing it to elastically deform and fully embed into the groove 260 formed by the top of the guide rail 100 and the inner side of the partition frame 250, thus forming a complete airtight isolation barrier. After the seal is established, the operator can place the second set of test samples on the guide rail 100 on the side of the movable bulkhead 230 facing away from the fixed bulkhead 210, and complete the bottom fitting of the diagonal brace 290 on that side. Then, close the main cabin door and start the system to conduct a dual-mode thermal vacuum test.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A partition isolation structure for a chamber for a dual mode thermal vacuum test, characterized by, include: Guide rail (100); An isolation assembly (200) includes a fixed partition (210) fixedly connected to the top of a guide rail (100), one end of which is threadedly connected to a threaded post (220), and the surface of the threaded post (220) is threadedly connected to a movable partition (230) that is slidably connected to the guide rail (100). A high-temperature resistant sealing ring (240) is fixedly connected between the fixed partition (210) and the movable partition (230).

2. The compartmentalized isolation structure for a dual mode thermal vacuum test chamber of claim 1, wherein, The isolation assembly (200) also includes a partition frame (250), and the arc surfaces of the fixed partition (210), the movable partition (230) and the high-temperature sealing ring (240) are all in contact with the inner side of the partition frame (250).

3. The compartmentalized isolation structure for a dual mode thermal vacuum test chamber of claim 2, wherein, The top of the guide rail (100) and the inner side of the partition frame (250) are provided with interconnected grooves (260), and the arc surface of the high temperature resistant sealing ring (240) is engaged with the inside of the groove (260).

4. The bi-modal thermal vacuum test chamber partition isolation structure of claim 1, wherein, The inner side of the fixed partition (210) is fixedly connected to a threaded sleeve (270), and the rod of the threaded column (220) is threadedly connected to the threaded sleeve (270).

5. The bi-modal thermal vacuum test chamber partition isolation structure of claim 1, wherein, The head of the threaded post (220) is fixedly connected to an adjusting handle (280), which is cross-shaped.

6. The bi-modal thermal vacuum test chamber partition isolation structure of claim 1, wherein, Both the fixed partition (210) and the movable partition (230) are fixedly connected to diagonal braces (290) at their opposite ends. The diagonal braces (290) fixedly connected to the fixed partition (210) are fixedly connected to the top of the guide rail (100), and the diagonal braces (290) fixedly connected to the movable partition (230) are attached to the top of the guide rail (100).

7. The chamber partitioning isolation structure for dual-mode thermal vacuum testing according to claim 6, characterized in that, The number of the diagonal braces (290) located at opposite ends of the fixed partition (210) and the movable partition (230) are both two, and the two adjacent diagonal braces (290) are symmetrically distributed on both sides of the threaded column (220).

8. The bi-modal thermal vacuum test chamber partition isolation structure of claim 6, wherein, The bottom of the diagonal brace (290), which is fixedly connected to the movable partition (230), is fitted with a ball bearing (2100), the arc surface of which contacts the guide rail (100).

Images