Supporting device for vacuum experiment cabin

Abstract

The utility model relates to the technical field of vacuum experiment equipment, in particular to a supporting device for a vacuum experiment cabin, which comprises a supporting upright post, a first connecting flange, a second connecting flange, a first connecting plate, a second connecting plate and a second connecting flange, and is characterized in that the upper end of the supporting upright post is provided with a connecting plate; the damping assembly comprises a corrugated pipe, a first lap joint flange, a second lap joint flange and a fourth connecting flange are arranged at the upper end of the corrugated pipe, and a second connecting flange is arranged at the lower end of the corrugated pipe; the connecting sleeve is arranged on the supporting stand column in a sleeving mode and located below the corrugated pipe, a third connecting flange connected with the second connecting flange in a sealed mode is arranged at the upper end of the connecting sleeve, and the connecting sleeve is welded and fixed in a mounting hole formed in the experiment cabin body; through the arrangement, the damping effect is improved, the experiment accuracy and the experiment device stability are ensured, the service life of the corrugated pipe is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a supporting device for a vacuum experiment chamber, belonging to the technical field of experimental equipment. Background Art

[0002] In ground-based aerospace environment simulation experimental equipment, a bellows structure is usually set up to reduce the impact of vibration generated during operation on experimental results. When conducting experiments, the bellows can absorb and disperse the stress caused by equipment vibration or temperature changes.

[0003] Utility model patent publication number CN218294449U discloses a through-cabin support and vibration isolation device for vacuum equipment, comprising: a first support column, a metal welded bellows, and a second support column; wherein one end of the first support column is used to support test equipment within the vacuum equipment, and the other end is fixed to one end face of the second support column through the metal welded bellows; one end of the metal welded bellows is welded to the one end face and surrounds the other end of the first support column; and the other end of the metal welded bellows is welded to the chamber of the vacuum equipment. However, during actual experiments, it was found that the bellows configured in this manner not only had poor vibration damping effect, but also generally had a short service life and frequently required repair and replacement, which not only delayed experimental progress but also increased production and operating costs. Furthermore, during low-temperature experiments, condensate backflowed into the bellows through the mounting port on the vacuum equipment chamber, making cleaning difficult and corroding the bellows. Therefore, the development of a new support device for vacuum test chambers is of practical significance. Utility Model Content

[0004] The utility model aims to solve the deficiencies in the prior art and provides a supporting device for a vacuum experiment chamber.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: A support device for a vacuum experimental chamber, comprising: a support column, the upper end of the support column is located inside the experimental chamber and is provided with a connecting plate for connecting to the workbench, the lower end of the support column is fixedly connected to the platform outside the experimental chamber, and a first connecting flange close to the connecting plate is fixedly provided on the support column; a shock-absorbing assembly, comprising a bellows which is sleeved on the support column and located inside the experimental chamber, a first slip-on flange, a second slip-on flange and a fourth connecting flange which are sealedly connected to the first connecting flange are provided at the upper end of the bellows, and a second connecting flange is provided at the lower end of the bellows; a connecting sleeve, the connecting sleeve is sleeved on the support column and is located below the bellows, the upper end of the connecting sleeve is provided with a third connecting flange which is sealedly connected to the second connecting flange, and the connecting sleeve is welded and fixed in a mounting hole provided on the experimental chamber.

[0006] Furthermore, the bellows is communicated with the connecting sleeve and there is a cavity between the bellows and the supporting column.

[0007] Furthermore, a reciprocating dynamic sealing device is provided between the connecting sleeve and the supporting column.

[0008] Furthermore, the connecting sleeve is provided with a vacuum valve and a cooling valve communicating with the cavity.

[0009] Furthermore, the inner diameter D1 of the connecting sleeve is 1.2-1.4 times the outer diameter D2 of the supporting column.

[0010] Furthermore, the supporting column is a hollow structure, and the interior thereof is set to a vacuum environment.

[0011] Furthermore, the thickness of the side wall of the connecting sleeve is 1.4-1.55 times the thickness of the side wall of the supporting column.

[0012] Furthermore, a limiting groove is provided on the supporting column, and the limiting groove is used to limit the first connecting flange.

[0013] Furthermore, a sealing ring is provided at the contact points between the first connecting flange and the first and second loose-fit flanges, and a sealing ring is provided at the contact points between the second connecting flange and the third connecting flange.

[0014] Furthermore, a cushion layer is fixedly provided on the upper surface of the connecting plate, and a contact surface between the cushion layer and the loading platform is provided with crisscross anti-slip grooves.

[0015] The beneficial effects of the utility model are:

[0016] (1) The bellows is close to the stage, which can better absorb and disperse the stress caused by device vibration or temperature changes, effectively improving the shock absorption effect and ensuring the accuracy of the experiment and the stability of the experimental device.

[0017] (2) The bellows is a thin shell structure, and the upper limit of the stress it can withstand is relatively low. By setting a connecting sleeve, the bellows is not directly fixed to the mounting hole set on the experimental cabin, thereby avoiding the local torsional influence of the experimental cabin on the bellows due to repeated hot and cold alternating tests and the pressure difference between the inside and outside of the cabin. In addition, the bellows does not need to bear the compressive stress from the experimental cabin, reducing the probability of failure due to compression deformation, effectively extending the service life of the bellows, ensuring the sealing of the device, and reducing maintenance costs.

[0018] (3) The above arrangement can solve the problem of difficulty in cleaning and corrosion of the bellows caused by condensate flowing back into the bellows when the bellows is in a low position, thereby reducing working costs and extending service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front view of a support device provided by an embodiment of the present utility model;

[0020] Figure 2 A cross-sectional view of a support device provided by an embodiment of the present utility model;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of the support device provided in an embodiment of the utility model;

[0022] Figure 4 for Figure 2 Schematic diagram of the limit slot structure at point A in the middle.

[0023] Figure numerals: 1. Support column; 2. Connecting plate; 3. Platform; 4. First connecting flange; 5. Bellows; 6. First slip-on flange; 7. Second slip-on flange; 8. Second connecting flange; 9. Connecting sleeve; 10. Third connecting flange; 11. Vacuum valve; 12. Cooling valve; 13. Limiting groove; 14. Pad; 15. Support platform; 16. Dynamic sealing device; 17. Fourth connecting flange. DETAILED DESCRIPTION

[0024] The following is a detailed description of the specific embodiments of the present invention. The present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used are only for describing specific embodiments and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] Example:

[0029] like Figure 1-3 As shown, the utility model provides a support device for a vacuum experiment chamber, comprising: a support column 1, the upper end of the support column 1 is located in the experiment chamber and is provided with a connecting plate 2 for connecting to the loading platform, the lower end of the support column 1 is fixedly connected to the platform 3 outside the experiment chamber, and a first connecting flange 4 close to the connecting plate 2 is fixedly provided on the support column 1; it can be understood that a part of the support column 1 is located inside the experiment chamber and the other part is located outside the experiment chamber, and the first connecting flange 4 is fixedly connected to the part of the support column 1 located inside the experiment chamber; a shock absorbing group The components include a bellows 5 which is sleeved on the supporting column 1 and located inside the experimental cabin, a first loose flange 6, a second loose flange 7 and a fourth connecting flange 17 which are sealed and connected to the first connecting flange 4 are provided at the upper end of the bellows 5, and a second connecting flange 8 is provided at the lower end of the bellows 5; a connecting sleeve 9 which is sleeved on the supporting column 1 and located below the bellows 5, a third connecting flange 10 which is sealed and connected to the second connecting flange 8 is provided at the upper end of the connecting sleeve 9, and the connecting sleeve 9 is welded and fixed in the mounting hole provided on the experimental cabin.

[0030] It should be pointed out that the platform 3 fixedly connected to the lower end of the support column 1 is a foundation or a shock-absorbing platform 3. In order to improve the operating stability of the experimental device, preferably, a support platform 15 is welded and fixed to the lower end of the support column 1, and the support platform 15 is fixedly connected to the platform 3; a part of the connecting sleeve 9 is located inside the experimental cabin, and the other part is located outside the experimental cabin, and the first connecting flange 4, the first loose flange 6, the second loose flange 7 and the fourth connecting flange 17 and the second connecting flange 8 and the third connecting flange 10 are all detachably connected by bolts.

[0031] By arranging the bellows 5 inside the experimental cabin, it plays a variety of roles. First, the bellows 5 is close to the stage, which can better absorb and disperse the stress caused by the vibration or temperature change of the device, effectively improving the shock absorption effect, and ensuring the accuracy of the experiment and the stability of the experimental device. Secondly, the bellows 5 is a thin shell structure, and the upper limit of the stress it can withstand is low. By arranging the connecting sleeve 9, the bellows 5 is not directly fixedly connected to the mounting hole set on the experimental cabin, avoiding the experimental cabin from being repeatedly heated and cooled and the pressure difference between the inside and outside of the cabin causing the bellows 5 to be damaged. The influence of local torsional force is eliminated, and the bellows 5 does not need to bear the compressive stress from the experimental chamber, which reduces the probability of failure due to compression deformation, effectively extends the service life of the bellows 5, ensures the sealing of the device, and reduces maintenance costs; finally, when conducting experiments in a low-temperature environment, condensation water will be generated on the surface of the bellows 5 and the inner wall of the experimental chamber. Compared with setting the bellows 5 outside the experimental chamber, the above setting can solve the problem of condensation water flowing back into the bellows 5 when the bellows 5 is in a low position, causing difficulty in cleaning and corrosion of the bellows 5, thereby reducing working costs and extending service life.

[0032] Specifically, such as Figure 2 As shown, the bellows 5 is connected to the connecting sleeve 9, and a cavity is formed between the bellows 5 and the supporting column 1. This arrangement prevents direct contact between the bellows 5 and the connecting sleeve 9 and the supporting column 1. The connecting sleeve 9 withstands the vibration of the experimental chamber due to the vacuum pump and other devices, which can effectively reduce the impact of the experimental chamber on the supporting column 1, further ensuring the accuracy of the experimental results. It also plays a role in heat insulation and ensures the stability of the experimental environment.

[0033] Specific. Such as Figure 2 As shown, a reciprocating dynamic sealing device 16 is provided between the connecting sleeve 9 and the supporting column 1. It should be pointed out that the dynamic sealing device 16 can be a combination of one or more types of molded packing seals, stuffing box seals and expansion ring seals. The dynamic sealing device 16 is provided on the inner side of the lower portion of the connecting sleeve 9. In the present utility model, the "lower portion" is the side close to the support platform 15. Through the above arrangement, the cavity between the bellows 5 and the connecting sleeve 9 and the supporting column 1 is sealed as an independent space, which can further improve the thermal insulation performance and can also play a guiding role for the supporting column 1, solving the problem of radial displacement between the connecting sleeve 9, the bellows 5 and the supporting column 1, effectively extending the service life of the bellows 5, further improving the shock absorption capacity, and ensuring the accuracy of the experimental results.

[0034] Specifically, such as Figure 1-2As shown, the connecting sleeve 9 is provided with a vacuum valve 11 and a cooling valve 12 that communicate with the cavity. The vacuum valve 11 is connected to a vacuum pump and is used to evacuate the cavity between the bellows 5, the connecting sleeve 9, and the support column 1, thereby further improving the thermal insulation performance and reducing the impact of high or low temperatures on the support column 1. The cooling valve 12 is connected to a coolant system and is used to quickly cool the experimental chamber after high-temperature experiments, effectively improving experimental efficiency.

[0035] Specifically, such as Figure 2 As shown, the inner diameter D1 of the connecting sleeve 9 is 1.2-1.4 times the outer diameter D2 of the support column 1. Through the definition of the above relationship, its role is to further coordinate the stability of the experimental device during the experimental process. If the inner diameter D1 of the connecting sleeve 9 is less than 1.2 times the outer diameter D2 of the support column 1, the cavity between the bellows 5 and the connecting sleeve 9 and the support column 1 is too small, resulting in insufficient heat insulation and cooling performance, and reduced work efficiency. If the inner diameter D1 of the connecting sleeve 9 is greater than 1.4 times the outer diameter D2 of the support column 1, the size is too large, which not only increases the production cost, but also increases the requirements for device stability and sealing. Therefore, only through the definition of the above relationship can the optimal stability of the experimental device be maintained while ensuring heat insulation and cooling performance.

[0036] Specifically, such as Figure 2 As shown, the support column 1 is a hollow structure, and its interior is set to a vacuum environment. Through this setting, while ensuring the supporting force, the production cost is further reduced and the thermal conductivity is reduced.

[0037] Specifically, the thickness of the side wall of the connecting sleeve 9 is 1.4-1.55 times the thickness of the side wall of the supporting column 1. The above setting is very critical and plays multiple roles. First, because the supporting column 1 is relatively long, while maintaining the pressure-bearing performance, the wall thickness of the connecting sleeve 9 is set to be thicker, which can reduce the requirements for the wall thickness of the supporting column 1 and reduce the production cost; secondly, through the above setting, the weight of the supporting device is reduced, and the pressure on the platform 3 for placing the experimental cabin is reduced; finally, the thicker side wall of the connecting sleeve 9 can meet the requirements of multiple welding repairs when a sealing leakage problem occurs at the connection between it and the experimental cabin, which can avoid the probability of welding leakage caused by too thin wall thickness and effectively reduce the difficulty of maintenance for workers.

[0038] Specifically, such as Figure 4As shown, the support column 1 is provided with a limiting groove 13, which is used to limit the first connecting flange 4. It can be understood that the first connecting flange 4 is embedded in the limiting groove 13, with the upper surface of the first connecting flange 4 abutting against the upper inner surface of the limiting groove 13, and the lower surface of the first connecting flange 4 abutting against the lower inner surface of the limiting groove 13; through the above arrangement, the pressure at the connection between the first connecting flange 4 and the support column 1 can be reduced, effectively preventing the connection from breaking, and further improving the stability of the experimental device.

[0039] Specifically, a sealing ring is provided at the contact points between the first connecting flange 4 and the first and second loose flanges 6 and 7, and a sealing ring is provided at the contact points between the second connecting flange 8 and the third connecting flange 10. The above arrangement not only provides sealing but also provides shock absorption, further improving the stability of the experimental device.

[0040] Specifically, a cushion layer 14 is fixedly provided on the upper surface of the connecting plate 2, and a crisscross anti-slip pattern is provided on the contact surface between the cushion layer 14 and the loading platform. It should be noted that the cushion layer 14 is made of any one of rubber, silicone, and PVC materials.

[0041] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. The scope of protection of the utility model shall be based on the attached claims.

Claims

1. A supporting device for a vacuum test chamber, characterized in that: include: A support column, wherein the upper end of the support column is located inside the experimental cabin and is provided with a connecting plate for connecting to the loading platform, the lower end of the support column is fixedly connected to the platform outside the experimental cabin, and the support column is fixedly provided with a first connecting flange close to the connecting plate; A shock-absorbing assembly includes a bellows sleeved on the support column and located inside the experimental cabin, wherein the upper end of the bellows is provided with a first loose flange, a second loose flange, and a fourth connecting flange that are sealed to the first connecting flange, and the lower end of the bellows is provided with a second connecting flange; A connecting sleeve is sleeved on the supporting column and is located below the corrugated pipe. A third connecting flange is provided at the upper end of the connecting sleeve and is sealed with the second connecting flange. The connecting sleeve is welded and fixed in a mounting hole provided on the experimental cabin.

2. The supporting device for a vacuum test chamber according to claim 1, characterized in that: The corrugated pipe is communicated with the connecting sleeve and a cavity is defined between the bellows and the supporting column.

3. The supporting device for a vacuum test chamber according to claim 2, characterized in that: A reciprocating dynamic sealing device is provided between the connecting sleeve and the supporting column.

4. The supporting device for a vacuum test chamber according to claim 3, characterized in that: The connecting sleeve is provided with a vacuum valve and a cooling valve communicating with the cavity.

5. The supporting device for a vacuum test chamber according to claim 2, characterized in that: The inner diameter D1 of the connecting sleeve is 1.2-1.4 times the outer diameter D2 of the supporting column.

6. The supporting device for a vacuum test chamber according to claim 1, characterized in that: The supporting column is a hollow structure, and a vacuum environment is set inside it.

7. The supporting device for a vacuum test chamber according to claim 6, characterized in that: The thickness of the side wall of the connecting sleeve is 1.4-1.55 times the thickness of the side wall of the supporting column.

8. The supporting device for a vacuum test chamber according to claim 1, characterized in that: A limiting groove is provided on the supporting column, and the limiting groove is used to limit the first connecting flange.

9. The supporting device for a vacuum test chamber according to claim 1, characterized in that: A sealing ring is provided at the contact points between the first connecting flange and the first and second loose flanges, and a sealing ring is provided at the contact points between the second connecting flange and the third connecting flange.

10. The supporting device for a vacuum test chamber according to claim 1, characterized in that: A cushion layer is fixedly provided on the upper surface of the connecting plate, and a contact surface between the cushion layer and the loading platform is provided with crisscross anti-slip grooves.

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