Sealing device and altitude simulation chamber door

Abstract

The application discloses a sealing device for forming airtightness between a cabin door and a cabin wall of an altitude simulation experiment cabin, comprising: a cabin wall airtight connection part formed in the cabin wall of the altitude simulation experiment cabin, which can form airtight connection with an inserted partial airtight connection assembly at least in a partially deformed state; and an airtight connection assembly formed in the cabin door opposite to the airtight connection part, which can be inserted into the first airtight connection part and form airtight connection with the cabin wall airtight connection part. The application can effectively avoid problems such as inconvenience in movement, jamming, deviation and the like when the cabin door is closed by sliding or swinging. When the sealing device is in place, a leakage air path exists between the cabin door and the cabin wall, and the application can form two airtight seals on the air path by means of a deformable sealing assembly and a telescopic sealing element, and both airtight seals can be deformed to avoid airtightness failure caused by altitude change.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental simulation, in particular to a sealing device for an altitude simulation experiment cabin, an altitude simulation experiment cabin door and an altitude simulation experiment cabin having the cabin door. BACKGROUND

[0002] The whole vehicle altitude simulation experiment cabin provides various simulated environmental conditions for the performance test of the vehicle, such as different temperatures, altitudes, humidities and wind speeds and wind volumes, and is easy to control, high in precision, rapid in state change and stable in keeping, meets the test environment requirements of the vehicle under different working conditions, and is used for various test experiments of the vehicle, such as fuel consumption, emission, air conditioning refrigeration and heating performance, defrosting and demisting performance, and low-temperature starting of the vehicle. The research and development and test of the vehicle cannot be separated from the whole vehicle environmental test cabin. The whole vehicle environmental test cabin is a test cabin with good sealing, and the cabin body is in a closed state when the vehicle is tested.

[0003] The altitude simulation environment cabin is an environmental cabin capable of simulating the influence of different climate conditions (especially the three high environments-high cold, high temperature and high humidity) under different altitude conditions on the performance of the vehicle. Compared with the traditional vehicle environmental cabin, the main difference of the altitude cabin is that the air pressure in the cabin can be adjusted to simulate different altitude environments. Therefore, the sealing of the altitude cabin, especially the sealing of the door, has nearly stringent requirements.

[0004] In order to provide the environment required for the experiment, the sealing of the altitude cabin is generally the cooperation of the cabin door plate and the door frame sealing surface, which is translated in the direction perpendicular to the sealing surface and pressed against the door frame sealing surface. The commonly used translation driving part is the structure of air cylinder + sliding guide rail or air cylinder + swing rod. The cabin door of the existing altitude simulation environment cabin has the following defects:

[0005] 1) In order to simulate high altitude and achieve sealing, the weight of the cabin door is very large, and the conventional weight is not less than 5 tons. The friction force and gravity are easy to generate torque during operation, which is easy to cause the mechanism to jam, and it is difficult to swing or translate.

[0006] 2) Due to the bending deformation of the sealing surface of the cabin door frame at altitude, and the deformation amount is different at different altitudes, the sealing surface of the cabin door and the sealing surface of the door frame are difficult to completely fit, and leakage is difficult to avoid.

[0007] 3) Only one sealing form is usually used, and when the sealing element is damaged or the door plate cannot be moved to the sealing position, the sealing will fail, and the pressure of the altitude cabin will be out of control.

[0008] The patent CN216284296 discloses a cabin door mechanism of an altitude simulation experiment cabin and the altitude simulation experiment cabin. The driving unit in the cabin door mechanism of the altitude simulation experiment cabin is connected with the cabin door through a flexible piece in the vertical direction, so that the cabin door has a certain degree of freedom in the direction perpendicular to the cabin door. When the cabin door is closed, the positive pressure stress plate is arranged between the positive pressure locking unit and the negative pressure supporting unit, which can be applied to both the positive pressure test and the negative pressure test of the altitude simulation experiment cabin. When the negative pressure test experiment is performed, the cabin door is in contact with the negative pressure supporting unit. When the positive pressure test experiment is performed, the positive pressure stress plate is in contact with the positive pressure locking unit. The cabin door mechanism has simple structure and good reliability, and the cabin door is not easy to be stuck when being opened and closed. The scheme realizes high-altitude environment simulation. The cabin door has a certain weight, and repeated use may cause problems such as jamming and deviation. Moreover, the sealing mechanism is easy to fail in repeated use. SUMMARY

[0009] In the part of the summary, a series of simplified concepts are introduced, which are simplifications of the prior art in the field. This will be described in further detail in the specific embodiment part. The summary part of the present application does not mean to try to limit the key features and necessary technical features of the claimed technical solution, nor does it mean to try to determine the protection scope of the claimed technical solution.

[0010] The technical problem to be solved by the present application is to provide a sealing device for an altitude simulation experiment cabin, a cabin door of an altitude simulation experiment cabin, and an altitude simulation experiment cabin with the cabin door.

[0011] To solve the above technical problems, the sealing device provided by the present application is used to form airtight connection between the cabin door and the cabin wall of the altitude simulation experiment cabin, and comprises:

[0012] The cabin wall airtight connection part 1 is formed in the cabin wall of the altitude simulation experiment cabin, and can at least partially deform to form airtight connection with the inserted partial airtight connection assembly 2;

[0013] The airtight connection assembly 2 is formed in the cabin door opposite to the airtight connection part 1, and the part extending out of the cabin door can be inserted into the first airtight connection part 1 to form airtight connection with the cabin wall airtight connection part 1.

[0014] Optionally, the sealing device is further improved, and the airtight connection part 1 comprises:

[0015] The recess 1.1 is formed in the cabin wall of the altitude simulation experiment cabin;

[0016] The deformable sealing assembly is arranged at the bottom of the recess 1.1;

[0017] The deformable sealing assembly comprises a first deformable sealing member 1.21, a second deformable sealing member 1.22 and a third deformable sealing member 1.23 arranged in sequence.

[0018] The deformation amount of the second deformable sealing member 1.22 is greater than that of the first deformable sealing member 1.21 and the third deformable sealing member 1.23 under the same stress condition.

[0019] Optionally, the sealing device is further improved, the first deformable sealing member 1.21 and the third deformable sealing member 1.23 are made of the same material and have the same size, and the material of the second deformable sealing member 1.22 is different from that of the first deformable sealing member 1.21 and the third deformable sealing member 1.23.

[0020] Optionally, the sealing device is further improved, the sealing device comprises:

[0021] The accommodation cavity 2.1 is formed in the door of the altitude simulation test cabin;

[0022] The telescopic sealing part 2.2 is arranged in the accommodation cavity 2.1;

[0023] The driving part is used to drive the telescopic sealing part 2.2 to extend from the accommodation cavity 2.1, and the end of the telescopic sealing part 2.2 can be inserted into or separated from the first sealing connection part 1;

[0024] The telescopic sealing member 2.4 is formed between the telescopic sealing part 2.2 and the door of the altitude simulation test cabin, and can be stretched or compressed with the movement of the telescopic sealing part 2.2;

[0025] The driving rod of the driving part and the driving part shell are in a self-sealing structure, and the driving part shell and the accommodation cavity are in a sealing connection formed by a flange sealing surface.

[0026] Optionally, the sealing device is further improved, the first deformable sealing member 1.21 and the third deformable sealing member 1.23 are soft sealing strips, and the second deformable sealing member 1.22 is an inflatable sealing strip;

[0027] When the sealing device is in place, the second deformable sealing member 1.22 can fill the gap between the telescopic sealing part 2.2 and the sealing connection part 1.

[0028] Optionally, the sealing device is further improved, the driving part 2.31 is an electric cylinder or a pneumatic cylinder;

[0029] The pneumatic cylinder drives the telescopic sealing part 2.2 through a piston rod;

[0030] The electric cylinder drives the telescopic sealing part (2.2) through an electric push rod;

[0031] The driving part 2.31 and the accommodation cavity 2.1 are in a sealing connection.

[0032] Optionally, the sealing device is further improved, and further comprises:

[0033] An air source 2.32 is arranged to connect an air inlet channel 2.33, which is used to fill compressed air into the accommodating cavity 2.1 to drive the telescopic sealing part 2.2 to move to the airtight connecting part 1;

[0034] The air inlet channel 2.33 is formed on the hatch door and is connected to the accommodating cavity 2.1;

[0035] The air outlet channel 2.34 is formed on the hatch door and is connected to the accommodating cavity 2.1;

[0036] A pressure sensor is used to detect the pressure in the accommodating cavity 2.1, and when the pressure is less than the set value of the pressure switch, the pressure switch outputs a signal to drive the driving part 2.31 to act instead of the air source 2.32 to drive the telescopic sealing part 2.2;

[0037] To solve the above technical problems, the application provides a cabin door of an altitude simulation experiment cabin, wherein the sealing device is arranged on both sides of the cabin door of the altitude simulation experiment cabin and overlaps with the cabin wall of the altitude simulation experiment cabin.

[0038] The application can at least achieve the following technical effects:

[0039] 1. The sealing is achieved by the airtight connecting part and the airtight connecting assembly, the driving part, the driving plug-in and the deformable sealing assembly in the vertical direction of the hatch door. In the experiment, the movement of the sealing structure instead of the movement of the hatch door is more convenient, and the problems of inconvenience, jamming and deviation caused by the movement of the hatch door when closing can be effectively avoided.

[0040] 2. The deformable sealing assembly solves the technical problem of sealing failure caused by the deformation of the hatch door due to the change of altitude.

[0041] 3. The telescopic sealing part 2.2 and the door plate are provided with the telescopic sealing part 2.4 to realize the soft connection of the sealing, so as to ensure the airtightness between the hatch door and the telescopic sealing part 2.2. The telescopic sealing part 2.4 has good stretching performance and is stretched or compressed with the movement of the piston rod / electric rod, so as to allow the freedom of the vertical hatch door.

[0042] 4. In the preferred scheme of the application, two driving devices are designed. First, the telescopic sealing part 2.2 is driven by the air source, and when it is detected that the pressure in the accommodating cavity 2.1 is less than the set value of the pressure switch, the electric cylinder / pneumatic cylinder is electrified to act instead of the air source 2.32 to drive the telescopic sealing part 2.2, thereby forming a redundant guarantee.

[0043] 5. When the sealing device is in place, the gap 3 between the hatch and the bulkhead is formed, and the two seals of the present invention are formed in this gap, and both seals can be deformed to avoid seal failure due to changes in altitude.

[0044] The first seal is the extension seal 2.2 inserted into the recess 1.1, which deforms the second deformable seal 1.22 to form a seal.

[0045] The second seal is the extension seal 2.2 inserted into the recess 1.1, which stretches the extension seal 2.4, thereby filling the gap 3 between the hatch and the bulkhead to form a seal. BRIEF DESCRIPTION OF DRAWINGS

[0046] The drawings accompanying the present invention are intended to illustrate the general characteristics of the methods, structures and / or materials used in certain example embodiments according to the present invention and to supplement the description in the present invention. However, the drawings accompanying the present invention are not drawn to scale and may not accurately represent the precise structural or performance characteristics of any given embodiment, and the drawings accompanying the present invention should not be interpreted as limiting or restricting the scope of the numerical or property values encompassed by the example embodiments according to the present invention. The present invention will be further described in conjunction with the specific embodiments illustrated in the drawings and detailed description below:

[0047] Figure 1 is a schematic diagram of the structure of the first embodiment of the present invention.

[0048] Figure 2 is a schematic diagram of the structure of the second embodiment of the present invention.

[0049] Figure 3 is a schematic diagram of the structure of the third embodiment of the present invention.

[0050] BRIEF DESCRIPTION OF DRAWINGS

[0051] Sealing connection part 1

[0052] Recess 1.1

[0053] First deformable seal 1.21

[0054] Second deformable seal 1.22

[0055] Third deformable seal 1.23

[0056] Sealing connection assembly 2

[0057] Receiving cavity 2.1,

[0058] Extension seal 2.2

[0059] Drive part 2.31

[0060] Air supply 2.32

[0061] Air inlet channel 2.33

[0062] Air outlet channel 2.34

[0063] Telescopic seal 2.4

[0064] Gap 3. DETAILED DESCRIPTION

[0065] The other advantages and technical effects of the present application can be fully understood by those skilled in the art from the disclosure of the present specification. The present application can also be implemented or applied in different specific embodiments, and the details in the present specification can be applied based on different viewpoints, with various modifications or changes made without departing from the general design idea of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. The exemplary embodiments of the present application described below can be implemented in various different forms, and should not be interpreted as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided in order to make the disclosure of the present application complete and complete, and to fully convey the technical solutions of the exemplary embodiments to those skilled in the art. It should be understood that when an element is referred to as being "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or there can be an intermediate element. Different is that when an element is referred to as being "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference signs always represent the same elements. As used herein, the term "and / or" includes any combination and all combinations of one or more related listed items.

[0066] First embodiment

[0067] Reference Figure 1 As shown, the present application provides a sealing device for forming airtightness between a hatch and a bulkhead of an altitude simulation test chamber, comprising:

[0068] A bulkhead airtight connection part 1 is formed in the bulkhead of the altitude simulation test chamber, which can form airtight connection with the inserted partial airtight connection assembly 2, i.e., the deformable sealing assembly, especially the second deformable sealing part 1.22, can form airtight connection with the inserted telescopic sealing part 2.2;

[0069] The airtight connection part 1 comprises:

[0070] A recess 1.1 is formed in the bulkhead of the altitude simulation test chamber;

[0071] A deformable sealing assembly is arranged at the bottom of the recess 1.1;

[0072] The deformable sealing assembly comprises a first deformable sealing member 1.21, a second deformable sealing member 1.22 and a third deformable sealing member 1.23 arranged in parallel and in sequence;

[0073] The sealing connecting assembly 2 is formed in the cabin door of the altitude simulation experiment cabin opposite to the first sealing connecting part 1, the part of the sealing connecting assembly 2 extending out of the cabin door can be inserted into the first sealing connecting part 1, and the sealing connecting assembly 2 can be partially deformed to form a sealing connection with the cabin wall, i.e. the telescopic sealing member 2.4 can form a sealing connection with the cabin wall after moving with the telescopic sealing part 2.2;

[0074] The sealing connecting assembly 2 comprises:

[0075] The accommodating cavity 2.1 is formed in the cabin door of the altitude simulation experiment cabin;

[0076] The telescopic sealing part 2.2 is arranged in the accommodating cavity 2.1;

[0077] The driving part is used to drive the telescopic sealing part 2.2 to extend out of the accommodating cavity 2.1, and the end of the telescopic sealing part 2.2 can be inserted into or separated from the first sealing connecting part 1; in the embodiment, the driving part is an electric cylinder / pneumatic cylinder, and the telescopic sealing part 2.2 is driven by an electric rod / piston rod;

[0078] The telescopic sealing member 2.4 is formed between the telescopic sealing part 2.2 and the cabin door of the altitude simulation experiment cabin, and can be stretched or compressed with the movement of the telescopic sealing part 2.2;

[0079] Under the same stress condition, the deformation amount of the second deformable sealing member 1.22 is greater than that of the first deformable sealing member 1.21 and the third deformable sealing member 1.23.

[0080] Optionally, the first deformable sealing member 1.21 and the third deformable sealing member 1.23 are made of the same material and have the same size, and are different from the second deformable sealing member 1.22.

[0081] Preferably, the first deformable sealing member 1.21 and the third deformable sealing member 1.23 are soft sealing strips, and the second deformable sealing member 1.22 is an inflatable sealing strip.

[0082] When the sealing device is in place, the second deformable sealing member 1.22 can fill the gap between the telescopic sealing part 2.2 and the sealing connecting part 1.

[0083] Furthermore, it should be understood that although the terms "first," "second," etc., may be used herein to describe different elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Therefore, without departing from the teachings of exemplary embodiments according to the present invention, the first element, component, region, layer, or portion discussed below may also be referred to as the second element, component, region, layer, or portion.

[0084] Second embodiment;

[0085] refer to Figure 2 As shown, the present invention provides a sealing device for forming a seal between the hatch and the bulkhead of an altitude simulation experimental chamber, comprising:

[0086] The bulkhead sealing connection 1 is formed in the bulkhead of the altitude simulation test chamber. It can undergo partial deformation to form a sealing connection with the inserted partial sealing connection component 2. That is, its deformable sealing component, especially the second deformable seal 1.22, deforms to form a sealing connection with the inserted telescopic seal 2.2.

[0087] The sealed connection part 1 includes:

[0088] Recess 1.1, which is formed in the wall of the altitude simulation test chamber;

[0089] A deformable sealing assembly is disposed at the bottom of the recess 1.1;

[0090] A deformable sealing assembly includes a first deformable seal 1.21, a second deformable seal 1.22, and a third deformable seal 1.23 arranged in parallel sequence;

[0091] The sealed connection component 2 is formed in the door of the altitude simulation test chamber opposite to the sealed connection part 1. The part of it that extends out of the door can be inserted into the first sealed connection part 1. It can generate partial deformation to form a sealed connection with the chamber wall. That is, its telescopic seal 2.4 forms a sealed connection with the chamber wall after the telescopic seal part 2.2 moves.

[0092] The sealed connection component 2 includes:

[0093] The accommodating cavity 2.1 is formed in the wall of the altitude simulation experimental chamber;

[0094] The telescopic sealing part 2.2 is arranged in the receiving cavity 2.1;

[0095] The driving part is used to drive the telescopic sealing part 2.2 to extend from the containing cavity 2.1, and the end of the telescopic sealing part 2.2 can be inserted into or separated from the first sealing connecting part 1; in the embodiment, the driving part is a pneumatic cylinder / electromotor cylinder, and the telescopic sealing part 2.2 is driven by a piston rod / electromotor rod; the driving part further comprises:

[0096] The air source 2.32 is arranged to be connected to the air inlet channel 2.33, and is used to fill compressed air into the containing cavity 2.1 to drive the telescopic sealing part 2.2 to move towards the sealing connecting part 1;

[0097] The air inlet channel 2.33 is formed on the hatch door and is connected to the containing cavity 2.1;

[0098] The air outlet channel 2.34 is formed on the hatch door and is connected to the containing cavity 2.1;

[0099] The pressure sensor is used to detect the pressure in the containing cavity 2.1, and when the pressure is less than the set value of the pressure switch, the pressure switch outputs a signal to the electromotor cylinder / pneumatic cylinder to drive the telescopic sealing part 2.2 to move by the electromotor cylinder / pneumatic cylinder instead of the air source 2.32;

[0100] The telescopic sealing part 2.4 is formed between the telescopic sealing part 2.2 and the hatch door of the altitude simulation experiment cabin and can be stretched or compressed along with the movement of the telescopic sealing part 2.2;

[0101] When the electromotor cylinder / pneumatic cylinder drives the piston rod / electromotor rod to reach the top dead center, the air source 2.32 stops filling air into the containing cavity 2.1, and the air source 2.32 starts to fill air into the second deformable sealing part 1.22.

[0102] The first deformable sealing part 1.21 and the third deformable sealing part 1.23 are soft sealing strips, and the second deformable sealing part 1.22 is an air-filled sealing strip;

[0103] When the sealing device is in place, the second deformable sealing part 1.22 can fill the gap between the telescopic sealing part 2.2 and the sealing connecting part 1.

[0104] The third embodiment;

[0105] The present application provides a hatch door of an altitude simulation experiment cabin, which has the sealing device of any one of the first embodiment or the second embodiment, and the sealing device is arranged on the part of the two sides of the hatch door of the altitude simulation experiment cabin which overlaps with the cabin wall of the altitude simulation experiment cabin, as shown in Figure 3 .

[0106] The fourth embodiment;

[0107] The present application provides a hatch door of an altitude simulation experiment cabin, which has the sealing device of any one of the first embodiment or the second embodiment, and the sealing device is arranged on the part of the two sides of the hatch door of the altitude simulation experiment cabin which overlaps with the cabin wall of the altitude simulation experiment cabin, as shown in

[0108] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0109] The application has been described in detail by specific reference to the detailed description and embodiments. This detailed description and embodiments do not restrict the application, but serve as examples of how to make and use the application. Many variations and modifications are possible within the scope of the application. Such variations and modifications are intended to fall within the scope of the application as defined by the appended claims.

Claims

1. A sealing device for forming a seal between a hatch and a bulkhead of an altitude simulation chamber, characterized in that, The application relates to a cabin wall sealing connection device, which comprises the following parts: a cabin wall sealing connection part (1) formed in the cabin wall of an altitude simulation cabin, which can form a sealing connection with an inserted part of a sealing connection assembly (2) under partial deformation; the sealing connection assembly (2) formed in the cabin door opposite to the cabin wall sealing connection part (1), the part of the sealing connection assembly (2) extending out of the cabin door can be inserted into the cabin wall sealing connection part (1) to form a sealing connection with the cabin wall sealing connection part (1); the cabin wall sealing connection part (1) comprises: a recess (1.1) formed in the cabin wall of the altitude simulation cabin; a deformable sealing assembly arranged at the bottom of the recess (1.1); the deformable sealing assembly comprises a first deformable sealing part (1.21), a second deformable sealing part (1.22) and a third deformable sealing part (1.23) arranged in parallel; under the same stress condition, the deformation amount of the second deformable sealing part (1.22) is larger than that of the first deformable sealing part (1.21) and the third deformable sealing part (1.23); the sealing connection assembly (2) comprises: a receiving cavity (2.1) formed in the cabin door of the altitude simulation cabin; a telescopic sealing part (2.2) arranged in the receiving cavity (2.1); a driving part (2.31) for driving the telescopic sealing part (2.2) to extend out of the receiving cavity (2.1), the end of the telescopic sealing part (2.2) can be inserted into or separated from the cabin wall sealing connection part (1); a telescopic sealing part (2.4) formed between the telescopic sealing part (2.2) and the cabin door of the altitude simulation cabin, which can be stretched or compressed along with the movement of the telescopic sealing part (2.2); the driving rod of the driving part (2.31) and the driving part shell are in a self-sealing structure, and the driving part shell and the receiving cavity are in a sealing connection through a flange sealing surface.

2. The sealed device of claim 1, wherein: The first deformable sealing part (1.21) and the third deformable sealing part (1.23) are soft sealing strips, and the second deformable sealing part (1.22) is an inflatable sealing strip; when the sealing device is in place, the second deformable sealing part (1.22) can fill the gap between the telescopic sealing part (2.2) and the cabin wall sealing connection part (1).

3. The sealed device of claim 2, wherein, The driving part (2.31) is an electric cylinder or a pneumatic cylinder; the pneumatic cylinder drives the telescopic sealing part (2.2) through a piston rod; the electric cylinder drives the telescopic sealing part (2.2) through an electric push rod; the driving part (2.31) and the receiving cavity (2.1) are in a sealing connection.

4. The sealed device of claim 3, wherein, Further comprising: an air source (2.32) connected with an air inlet channel (2.33) for filling compressed air into the receiving cavity (2.1) to drive the telescopic sealing part (2.2) to move towards the cabin wall sealing connection part (1); the air inlet channel (2.33) is formed on the cabin door and connected with the receiving cavity (2.1); an air outlet channel (2.34) formed on the cabin door and connected with the receiving cavity (2.1); a pressure sensor for detecting the pressure in the receiving cavity (2.1), when the pressure is less than the set value of a pressure switch, the pressure switch outputs a signal to the driving part (2.31) to act in place of the air source (2.32) to drive the telescopic sealing part (2.2).

5. The altitude simulation chamber door having the sealing device according to any one of claims 1 to 4, characterized in that: the sealing device is arranged at the parts of the two sides of the altitude simulation chamber door which overlap with the chamber wall of the altitude simulation chamber.

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