Simulated modular shelter door system and simulated modular shelter

Abstract

This invention relates to the field of testing equipment technology, and more specifically to a modular testing facility for environmental simulation. The modular testing facility's door system includes: a door frame having a passageway; a door rotatably pivotally connected to the door frame, and whose rotation controls the opening / closing of the passageway; a sealing structure disposed between the door frame and the door; the sealing structure includes a first seal and a second seal, both of which are elastic and configured such that when the door is closed to the passageway, they are spaced apart along the thickness direction of the door and are deformed by the door frame and the door to form a double-row seal, with the first seal being closer to the outer surface of the door than the second seal; wherein the first seal has one and only one channel inside, forming a single-hole structure; the second seal has two spaced-apart channels inside, forming a double-hole structure, and when the door is closed to the passageway, the two channels are spaced apart along the thickness direction of the door.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and more specifically to modular equipment for environmental simulation. Background Technology

[0002] A high-altitude environment simulation cabin is an experimental device that can simulate the low-temperature and low-pressure environment of high-altitude regions, and is crucial for related scientific research and product testing. Its door system, as a key component for maintaining the stability of the simulated environment, typically includes a door frame fixedly connected to the cabin shell, and a door that works with the door frame to open and close the passage. A sealing structure is installed between the door frame and the door to achieve pressure and temperature maintenance.

[0003] However, in practical applications, common sealing strip structures or planar sealing methods often have insufficient pressure holding capacity, resulting in rapid degradation of sealing performance. This makes it impossible to reliably maintain the low air pressure and low temperature environment required inside the container for a long period of time, affecting the accuracy of simulation experiments and the stability of equipment operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a door system that optimizes pressure holding capacity to better meet the needs of simulated shelter use.

[0005] It also provides: simulation cabins with the above-mentioned door systems to optimize the accuracy of simulation experiments and the stability of equipment operation.

[0006] The overall technical solution of this invention is as follows:

[0007] This invention proposes a simulated shelter door system, comprising:

[0008] The door frame used to fix the container shell has a passage for entry and exit;

[0009] The hatch is rotatably pivoted to the door frame and its opening / closing is controlled by rotation.

[0010] A sealing structure is installed between the door frame and the hatch to achieve a seal when the passage is closed;

[0011] The sealing structure includes a first seal and a second seal, both of which are elastic and are configured such that when the hatch closes the passage, they are spaced apart along the thickness direction of the hatch and are deformed by the door frame and the hatch to form a double-row seal together, and the first seal is closer to the outer side of the hatch than the second seal.

[0012] The first sealing element has one and only one channel inside, so as to form a single-hole structure;

[0013] The second seal has two spaced-apart channels inside, forming a double-hole structure. When the hatch closes the passage, the two channels are spaced apart in the thickness direction of the hatch.

[0014] In the above scheme, a double-row seal is first formed between the door frame and the hatch by using the first and second sealing elements, which improves the basic sealing effect and enhances the pressure holding capacity of the hatch system.

[0015] Furthermore, considering the environmental characteristics of the high-altitude environment simulation cabin, such as the working environment of 35℃ and 101kPa outside the cabin and -15℃ and 61kPa inside the cabin, the two sealing components were specifically designed to further optimize the pressure holding capacity of the cabin door system. Specifically:

[0016] The first sealing element, as the direct contact seal on the external high-pressure side, primarily functions as a differential pressure seal, directly bearing the 50 kPa pressure difference between the inside and outside of the cabin and preventing outside air from leaking into the cabin. It is designed with a single-hole structure, such as a "D" shape, which has a high resilience and large compressibility. After expansion under pressure, it can better adapt and compensate for processing and assembly deviations, ensuring a better fit throughout. Furthermore, under frequent opening and closing of the cabin door and fluctuations in external air pressure, the "D"-shaped single-hole structure is more stable, less prone to rolling or twisting, ensuring the continuous reliability of the first seal.

[0017] The second seal, serving as the direct contact seal on the internal low-pressure side, primarily functions as insulation and moisture sealing, blocking heat transfer between the inside and outside of the chamber, reducing heat loss from the chamber, and preventing external moisture from seeping into the chamber. Its design, such as a "B"-shaped double-hole structure, provides higher support rigidity, making it less susceptible to being flattened by negative pressure and losing its sealing cross-section, ensuring stable sealing, and minimizing the impact of thermal expansion and contraction, resulting in superior vacuum sealing stability.

[0018] That is, to match the unique working conditions of high-altitude simulated cabin with high external pressure and internal vacuum, the first and second sealing components are specially designed to form a gradient seal with multiple superimposed effects, optimize the overall sealing effect between the door frame and the cabin door, and further improve the pressure holding capacity of the cabin door system.

[0019] In some embodiments, the first seal includes a first sealing straight section extending in a straight line and a first sealing arc section extending in a bent direction;

[0020] The two ends of the first sealing arc segment are connected to the first sealing straight segment to form a channel around it;

[0021] The first sealing section is configured to be fixedly connected to one of the door frame or the hatch.

[0022] The first sealing arc is used to abut against another door frame or hatch.

[0023] In some embodiments, the second seal includes a second sealing straight section extending in a straight line, and a second sealing arc section and a third sealing arc section extending in a bent manner;

[0024] Both ends of the second sealing arc segment and both ends of the third sealing arc segment are connected to the second sealing straight segment to form two channels around it.

[0025] The second sealing arc segment and the third sealing arc segment also have a part that is connected as one piece;

[0026] The second sealing section is configured to be fixedly connected to one of the door frame or the hatch.

[0027] The second and third sealing arcs are used to abut against another part of the door frame or hatch.

[0028] In the above embodiments, by forming a first sealing element with a "D"-shaped single-hole structure and a second sealing element with a "B"-shaped double-hole structure, and by dedicating the straight section to fixed connection and the arc section to sealing contact, the following is achieved:

[0029] The interface of the seal used to connect with the door frame or hatch is a flat, stable straight plane, which can improve the fit and firmness of the connection.

[0030] Moreover, when pressed against the opposite component, the curved surface can produce gradual and uniform compression deformation, thereby forming a continuous and tight sealing contact zone. Compared with the sharp-edged cross section, the curved surface can better adapt to minor unevenness and provide a more reliable seal.

[0031] In some implementations, the door frame has a frame portion located on the outer edge of the passageway;

[0032] The hatch has a top pressure section located on the outside of the frame portion when the hatch is closed to the passageway;

[0033] Both the first and second seals are fixed to the top pressure part, and are pressed together by the top pressure part and the frame part to form a seal.

[0034] On the one hand, the structure is adapted to open / close the passage by rotating the hatch. The seal is formed by the joint pressing of the top pressure part and the frame part. The rotation of the hatch makes it easier to apply force and press the seal more stably, thereby improving the sealing effect. On the other hand, placing the seal on the rotatable hatch also facilitates the maintenance and replacement of the seal structure in the future.

[0035] Furthermore, in some embodiments, the top pressure part is fixed with a hatch sealing rail, which has a first sealing groove and a second sealing groove, and when the hatch closes the passage, the openings of the two sealing grooves face the frame part.

[0036] The first sealing element is fixed in the first sealing groove, and the second sealing element is fixed in the second sealing groove.

[0037] The sealing element is fixed in the sealing groove to achieve the positioning and limiting of the sealing strip, preventing the sealing strip from being squeezed out under large pressure differentials, thereby optimizing the stability of the overall sealing effect. At the same time, when the hatch sealing rail is fixed to the top pressure part as an independent welded component, it can compensate for the deformation after the hatch welding through precision machining, better ensuring the flatness of the sealing surface.

[0038] Furthermore, in some embodiments, the frame portion is fixed with a door frame sealing rail, which has a first limiting groove and a second limiting groove.

[0039] The first limiting groove is configured such that when the hatch closes the passage, the first sealing element is inserted and the first sealing element is pressed together by the groove wall.

[0040] The second limiting groove is configured to allow the second seal to be inserted when the hatch closes the passage, and to press the second seal against the groove wall.

[0041] By setting the limiting groove, the seal is engaged and positioned when the hatch is closed, so that the seal can be compressed more evenly and controllably, preventing it from being over-squeezed or skewed. This makes the pressing process of the double-row seal more controllable and the effect more consistent, improving the reliability and stability of the seal.

[0042] Furthermore, in some embodiments, the groove walls on both sides of the first limiting groove and the groove walls on both sides of the second limiting groove are inclined surfaces, so as to guide the seal to deform towards the periphery of the limiting groove when the seal is compressed.

[0043] The beveled design, when the hatch closes, ensures that the seal is not only vertically compressed during compression, but also undergoes a lateral deformation towards the periphery of the limiting groove, guided by the bevel. This forces the sealing material to more fully fill any gaps in various directions, enhancing the sealing structure's adaptive compensation capability to manufacturing errors and deformations, thus improving the sealing effect. Furthermore, the beveled structure increases the compression contact area of ​​the sealing strip, further enhancing the sealing performance.

[0044] In some embodiments, either the door frame or the hatch is provided with a latch, and the other is provided with a fastening part;

[0045] The latch and fastening are configured to allow for detachable fastening when the hatch is closed to the passageway.

[0046] The latch and latching part form a locking structure when the hatch is closed, ensuring that the seal can always maintain sufficient compression when the hatch is closed to the passage, reducing the possibility of leakage due to slight opening of the hatch caused by pressure or vibration, and optimizing the overall sealing effect.

[0047] In some embodiments, the bottom of the hatch is connected to a rotatable support wheel, the lower end of which is used to contact a support plane to provide support for the hatch.

[0048] Support wheels are installed at the bottom of the hatch to transfer most of the hatch's weight to the ground or base, thereby reducing the load on the hinges and minimizing permanent deformation caused by long-term load-bearing. This ensures the relative positional accuracy between the hatch and the door frame for a long time, guarantees a good fit of the sealing surface, and improves the long-term stability of the entire sealing system.

[0049] The present invention also provides a simulated modular shelter, which includes the simulated modular shelter door system described in any of the above embodiments. By applying the optimized door system, the simulated modular shelter containing it has a superior environmental maintenance capability.

[0050] The main beneficial effects of the above technical solution are as follows:

[0051] A door system with optimized pressure-holding capacity has been developed to better meet the needs of simulated cabin use. It consists of two seals, an outer one and an inner one, spaced apart along the thickness of the door. The outer first seal is a single-channel structure suitable for bearing pressure, while the inner second seal is a double-channel structure that resists negative pressure and is conducive to heat preservation. The two seals work together to form a gradient seal against the high pressure outside the cabin and the low pressure and low temperature inside the cabin, thereby significantly improving the long-term reliability of the sealing system and the pressure-holding capacity of the door system. Attached Figure Description

[0052] The present invention will now be further described with reference to the accompanying drawings.

[0053] Figure 1 This is a schematic diagram of the overall hatch system.

[0054] Figure 2 This is a schematic diagram of the sealing structure arrangement.

[0055] Figure 3 This is a schematic diagram of the structure of the first and second seals.

[0056] Figure 4 This is a schematic diagram showing the fit between the sealing structure and the sealing rail. Detailed Implementation

[0057] The present invention will be illustrated with specific examples below.

[0058] The door system for the simulated modular housing is used to create access channels for operators within the simulated modular housing.

[0059] like Figure 1As shown, the hatch system includes a door frame 1, which is formed by welding multiple rectangular tubes and surrounds a passage 1.1. The passage 1.1 is used to connect the interior space of the cabin with the exterior space for operators to enter and exit.

[0060] The door frame 1 is connected to a hatch 2 that controls the opening and closing of the passage 1.1. The hatch 2 is located on the outside of the passage 1.1 (on the outside side of the simulated shelter when installed), and is rotatably connected to the door frame 1 by, for example, a hinge structure. The hatch 2 is larger than the diameter of the passage 1.1 so as to close the passage 1.1, allowing the door 2 to be turned to close the passage 1.1 from the outside, or to keep the passage 1.1 open.

[0061] A sealing structure is provided between the door frame 1 and the hatch 2. When the hatch 2 closes the passage 1.1, the sealing structure forms a seal between the door frame 1 and the hatch 2, preventing the passage 1.1 from connecting with the external space of the hatch 2.

[0062] like Figure 2 As shown, the sealing structure includes a first sealing element 3 and a second sealing element 4. The sealing element can be fixed to the door frame 1 or the hatch 2.

[0063] As an example, in this embodiment, the door frame 1 has a frame portion 1.2 located on the outer edge of the passage 1.1, and the frame portion 1.2 surrounds the passage 1.1. The hatch 2 has a pressing portion 2.1, which is located outside the frame portion 1.2 and opposite to it when the hatch 2 is closed to the passage 1.1. The first seal 3 and the second seal 4 are both fixed to the pressing portion 2.1 so that when the hatch 2 is closed to the passage 1.1, both seals are pressed together by the pressing portion 2.1 and the frame portion 1.2 to form a seal.

[0064] By rotating the hatch 2, the hatch 2 is driven to close the passage 1.1 on the outside, and by pressing and applying force, the first seal 3 and the second seal 4 are pressed together by the top pressure part 2.1 and the frame part 1.2, thus achieving a seal.

[0065] The frame portion 1.2 may also have a raised enclosure portion 1.3. When the hatch 2 closes the passage 1.1, the enclosure portion 1.3 is located on the outer ring of the sealing structure and surrounds the sealing structure to form a fence that prevents external objects from intruding into the sealing structure.

[0066] Both seals are elastic, for example, both seals are annular sealing strips made of silicone foam material arranged around channel 1.1, so as to have better high and low temperature resistance, and better compression resilience, weather resistance and corrosion resistance.

[0067] The first seal 3 and the second seal 4 on the top pressure part 2.1 are arranged at intervals along the thickness direction of the hatch 2 (that is, along the direction from the outer side to the inner side of the hatch 2, the inner side of the hatch 2 is the side used to seal the passage 1.1, and the outer side of the hatch 2 is the side used to contact the external atmosphere when installed in the container). When the hatch 2 closes the passage 1.1, the two seals together form a double-row seal, and the first seal 3 is closer to the outer side of the hatch 2 than the second seal 4, so that the second seal 4 is located in the inner ring of the first seal 3.

[0068] The first sealing element 3 has only one channel inside, forming a single-hole structure; the second sealing element 4 has two channels arranged at intervals inside, forming a double-hole structure, and the two channels are arranged at intervals in the thickness direction of the hatch 2.

[0069] For example Figure 3 As shown, in this embodiment, the first sealing element 3 includes a straight sealing section 3.1 extending in a straight line and a curved sealing section 3.2 extending in a bent direction. The two ends of the curved sealing section 3.2 are integrally connected to the straight sealing section 3.1 to form a channel, thereby giving the first sealing element 3 a single-hole structure with a "D" shape. The straight sealing section 3.1 is fixed to the top pressure portion 2.1, and the curved sealing section 3.2 abuts against the frame portion 1.2 and is deformed by the frame portion 1.2.

[0070] For example Figure 3 As shown, in this embodiment, the second sealing element 4 includes a straight second sealing section 4.1 extending in a straight line, and a curved second sealing section 4.2 and a curved third sealing section 4.3 extending in a bent manner. Both ends of the curved second section 4.2 and both ends of the curved third section 4.3 are integrally connected to the straight second sealing section 4.1 to form two channels; and the curved second section 4.2 and the curved third section 4.3 also have integrally connected portions, such as... Figure 3 As shown, the second sealing arc segment 4.2 and the third sealing arc segment 4.3 are integrally connected at the middle of the second sealing straight segment 4.1 to form a "B"-shaped double-hole structure for the second sealing element 4. The second sealing straight segment 4.1 is fixed to the top pressure part 2.1, and the second sealing arc segment 4.2 and the third sealing arc segment 4.3 are used to abut against the frame part 1.2 and are pressed and deformed by the frame part 1.2.

[0071] The first sealing section 3.1 and the second sealing section 4.1 can be directly fixed to the top pressure section 2.1 using, for example, glue.

[0072] Or, such as Figure 4 As shown, a hatch sealing rail 5 is fixed on the top pressure part 2.1, and the first sealing straight section 3.1 and the second sealing straight section 4.1 are fixed to the hatch sealing rail 5 by means of, for example, glue.

[0073] like Figure 4 As shown, the hatch sealing rail 5 has a first sealing groove 5.1 and a second sealing groove 5.2. The two sealing grooves are arranged at intervals in the thickness direction of the hatch 2, and when the hatch 2 closes the passage 1.1, the openings of the two sealing grooves face the frame portion 1.2.

[0074] The first sealing element 3 is fixed in the first sealing groove 5.1, and its first sealing straight section 3.1 is fixed to the groove wall of the first sealing groove 5.1 by, for example, glue.

[0075] The second seal 4 is fixed in the second sealing groove 5.2, and its second sealing straight section 4.1 is fixed to the groove wall of the second sealing groove 5.2 by, for example, glue.

[0076] Matching the settings of the door sealing rail 5, such as Figure 4 As shown, the frame portion 1.2 of the door frame 1 can be fixed with a door frame sealing rail 6. The door frame sealing rail 6 has a first limiting groove 6.1 and a second limiting groove 6.2. When the hatch 2 closes the passage 1.1, the opening of the first limiting groove 6.1 is opposite to the opening of the first sealing groove 5.1, allowing the first sealing element 3 to be inserted and pressed against the first sealing element 3 by the groove wall; the opening of the second limiting groove 6.2 is opposite to the opening of the second sealing groove 5.2, allowing the second sealing element 4 to be inserted and pressed against the second sealing element 4 by the groove wall.

[0077] Among them, such as Figure 4 As shown, the first limiting groove 6.1 has two side groove walls spaced apart in the thickness direction of the hatch 2. Both side groove walls are inclined surfaces that guide the seal to deform toward the periphery of the first limiting groove 6.1 when the seal is compressed.

[0078] like Figure 4 As shown, the second limiting groove 6.2 also has two side groove walls spaced apart in the thickness direction of the hatch 2. Both side groove walls are inclined surfaces that guide the seal to deform toward the periphery of the second limiting groove 6.2 when the seal is compressed.

[0079] like Figure 1 As shown, a door lock structure can also be provided between the door frame 1 and the hatch 2. For example, either the door frame 1 or the hatch 2 may be equipped with a latch 7, and the other with a latching part 8. When the hatch 2 is closed to the passage 1.1, the latch 7 and the latching part 8 can be detachably fastened together. By fastening or unfastening the latch 7 and the latching part 8, the hatch 2 can be locked or rotated to open. The latch 7 and the latching part 8 adopt existing door lock structures, such as a latch structure.

[0080] like Figure 1As shown, a rotatable support wheel 9 is connected to the bottom of the hatch 2. The lower end of the support wheel 9 is used to contact the support plane (i.e., the plane used to support the container, such as the ground) to provide support for the hatch 2. When the hatch 2 rotates, the support wheel 9 rolls on the support plane to support the moving hatch 2.

[0081] Example 2:

[0082] The simulated modular housing includes the door system for the simulated modular housing described in Embodiment 1.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present invention indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These are merely 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "install," "connect," "join," and "fix" in the description should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0084] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A simulated modular shelter door system, including: The door frame used to fix the container shell has a passage for entry and exit; The hatch is rotatably pivoted to the door frame and the opening / closing of the passage is controlled by rotation; A sealing structure is provided between the door frame and the hatch to achieve a seal when the passage is closed; Its features are: The sealing structure includes a first sealing element and a second sealing element, both of which are elastic and are configured such that when the hatch closes the passage, they are spaced apart along the thickness direction of the hatch and are deformed by the door frame and the hatch to form a double-row seal together, and the first sealing element is closer to the outer side of the hatch than the second sealing element. The first sealing element has one and only one channel inside, so as to form a single-hole structure; The second seal has two spaced-apart channels inside to form a double-hole structure, and when the hatch closes the channel, the two channels are spaced apart in the thickness direction of the hatch.

2. The simulated shelter door system according to claim 1, characterized in that: The first seal includes a first sealing straight section extending in a straight line and a first sealing arc section extending in a bent direction; The two ends of the first sealing arc segment are integrally connected with the first sealing straight segment to form a channel around it; The first sealing straight section is configured to be fixedly connected to one of the door frame or the hatch. The first sealing arc segment is used to abut against the door frame or another of the hatches.

3. The simulated shelter door system according to claim 1, characterized in that: The second seal includes a straight second sealing section extending in a straight line, and a curved second sealing section and a curved third sealing section extending in a bent manner; Both ends of the second sealing arc segment and both ends of the third sealing arc segment are integrally connected to the second sealing straight segment to form two channels around it; The second sealing arc segment and the third sealing arc segment also have a portion that is integrally connected; The second sealing section is configured to be fixedly connected to one of the door frame or the hatch. The second sealing segment and the third sealing segment are used to abut against the door frame or another of the hatches.

4. The simulated shelter door system according to any one of claims 1 to 3, characterized in that: The door frame has a frame portion located on the outer edge of the passage; The hatch has a top pressure portion located outside the frame portion when the hatch is closed to the passage; Both the first seal and the second seal are fixed to the top pressing part, so that they are pressed together by the top pressing part and the frame part to form a seal.

5. The simulated shelter door system according to claim 4, characterized in that: The top pressure part is fixed with a hatch sealing rail, which has a first sealing groove and a second sealing groove. When the hatch closes the passage, the openings of the two sealing grooves face the frame part. The first sealing element is fixed in the first sealing groove, and the second sealing element is fixed in the second sealing groove.

6. The simulated shelter door system according to claim 5, characterized in that: The frame portion is fixed with a door frame sealing rail, which has a first limiting groove and a second limiting groove; The first limiting groove is configured such that when the hatch closes the passage, the first sealing element is inserted and pressed against the first sealing element by the groove wall; The second limiting groove is configured to allow the second seal to be inserted when the hatch closes the passage, and to press the second seal against the groove wall.

7. The simulated shelter door system according to claim 6, characterized in that: The groove walls on both sides of the first limiting groove and the groove walls on both sides of the second limiting groove are inclined surfaces, so as to guide the seal to deform towards the outside of the limiting groove when the seal is compressed.

8. The simulated shelter door system according to claim 1, characterized in that: The door frame is provided with a latch on one of the doors, and the other is provided with a fastening part; The latch and the fastening part are configured to be detachably fastened when the hatch closes the passage.

9. The simulated shelter door system according to claim 1, characterized in that: The bottom of the hatch is connected to a rotatable support wheel, the lower end of which is used to contact the support plane to provide support for the hatch.

10. A simulated modular shelter, characterized in that: It includes the simulated shelter door system as described in any one of claims 1 to 9.

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