Cabin door structure for high-altitude movable pressurized room

Abstract

The utility model provides a cabin door structure for a high-altitude movable pressurized room, and belongs to the technical field of high-pressure buildings. The cabin door structure comprises a cabin door, a door frame, a sealing piece, a sealing groove, a door lock and a door handle. The door lock and the door handle are arranged on the cabin door, and the cabin door is movably connected with the door frame; the sealing groove is formed in the door frame; the sealing piece is installed in the sealing groove and comprises a sealing piece body, a first sealing part and a second sealing part, wherein the first sealing part and the second sealing part are arranged on the sealing piece body. The sealing piece body is installed in the sealing groove, the first sealing part and the second sealing part are both arranged on the end face, away from the sealing groove, of the sealing piece body, and the first sealing part and the second sealing part are arranged in a spaced mode. According to the utility model, the sealing element is arranged to be a silica gel structural element, and the characteristics of silica gel are utilized, so that the sealing element has the characteristics of better cold resistance, weatherability, stable structure and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure buildings and relates to a hatch structure for a high-altitude movable pressurized room. Background Art

[0002] Existing portable pressurized rooms are generally divided into two main sections: a transition zone and a pressurized zone. Personnel enter the pressurized zone through a hatch in the transition zone. Therefore, door sealing is crucial. Poor door sealing not only results in air leaks but also makes entry and exit difficult. Like most rigid oxygen chambers, the hatch of a portable pressurized room is sealed with a sealing strip. When the door is rotated and closed, it presses against the sealing ring. During pressurization, the high-pressure gas in the pressurized zone acts on the door, squeezing the strip against the door, ensuring a tight seal. However, the shape and structure of the sealing strip can affect the door's sealing. Therefore, a simple, reliable, and easy-to-install sealing component is urgently needed to address this door sealing issue.

[0003] Currently, the hatch seals used in pressurized oxygen chambers and pressurization equipment mostly use lip seals. This type of seal has an excellent sealing effect under slight pressure or no pressure. However, in actual use, the lip will vibrate and make a lot of noise in the early stage of pressure building and the later stage of pressure relief, affecting the user experience. Another type of seal is the inflatable seal. In short, the seal is inflated by an air pump to seal the hatch. When the pressure is relieved, the seal needs to be deflated. This type of seal is more complex in structure, requires special inflation equipment, and is more cumbersome to use. In order to further ensure the reliability of the hatch seal, double seals are used for sealing. This type of seal usually requires two different specifications of seals, one soft and one hard, one high and one low hardness, and two sealing grooves are required on the door frame. This leads to high cost and complex processing.

[0004] Therefore, a door sealing strip with simple structure, convenient installation, reliable sealing and no abnormal noise during pressure charging and depressurization is needed to ensure the sealing of the movable pressurized room door. Utility Model Content

[0005] The utility model provides a hatch structure for a high-altitude movable pressurized room, comprising a hatch, a door frame, a sealing member, a sealing groove, a door lock and a door handle;

[0006] The door lock and door handle are both arranged on the cabin door, and the cabin door is movably connected to the door frame;

[0007] The sealing groove is provided on the door frame;

[0008] The sealing member is installed in the sealing groove, and the sealing member includes a sealing member body and a first sealing portion and a second sealing portion provided on the sealing member body;

[0009] The sealing body is installed in the sealing groove. The first sealing portion and the second sealing portion are both arranged on the end surface of the sealing body away from the sealing groove, and the first sealing portion and the second sealing portion are spaced apart from each other.

[0010] Optionally, the first sealing portion is configured as a first convex structure, an end surface of the first convex structure away from the sealing body is configured as an arc structure surface, and a through hole is further provided on the central axis of the first convex structure;

[0011] The second sealing portion is configured as a second convex structure, and the end surfaces of the second convex structure away from the sealing body are configured as arc structure surfaces.

[0012] Optionally, the distance from the arc structure surface of the first protrusion structure to the seal body is greater than the distance from the arc structure surface of the second protrusion structure to the seal body.

[0013] Optionally, a plurality of ventilation holes are further provided on the first sealing portion, and the plurality of ventilation holes are arranged at intervals along the length direction of the first sealing portion.

[0014] Optionally, the sealing body is embedded in the sealing groove, and an adhesive layer is provided between the sealing body and the sealing groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) In the present invention, the sealing member is set as a silicone structural member, and the inherent properties of silicone are utilized to make it have good cold resistance, weather resistance, structural stability and other characteristics.

[0017] (2) The present invention integrates the two sealing parts of the seal into a raised hollow tube with a larger diameter (i.e., the first sealing part) and a raised solid semicircular structure with a smaller diameter (i.e., the second sealing part), thereby avoiding the need to open multiple sealing grooves on the door frame and achieving a double sealing effect to ensure sealing.

[0018] (3) The utility model can avoid noise problems in the early stage of pressure building and the late stage of pressure relief by setting the first sealing part as a raised solid semicircular structure, which affects the user experience.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a partial schematic diagram of a hatch structure for a high-altitude mobile pressurized room in an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A partial schematic diagram of the middle seal;

[0023] Figure 3 yes Figure 2 A partial enlarged schematic diagram of point A in the middle.

[0024] in:

[0025] 1. Hatch door, 2. Door frame, 3. Seal, 3-1. Seal body, 3-2. First sealing part, 3-3. Second sealing part, 4. Sealing groove, 5. Door lock, 6. Door handle. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more clear and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings of the present invention are all simplified and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the implementation of the present invention; the "several" mentioned in the present invention are not limited to the specific quantities in the examples in the drawings; the directions or positional relationships indicated by "front", "middle", "back", "left", "right", "up", "down", "top", "bottom", "middle", etc. mentioned in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor can they be understood as limitations on the present invention.

[0027] Example:

[0028] See also Figures 1 to 3 As shown, the present invention provides a hatch structure for a high-altitude mobile pressurized room, comprising a hatch 1, a door frame 2, a seal 3, a sealing groove 4, a door lock 5 and a door handle 6;

[0029] The door lock 5 and the door handle 6 are both provided on the cabin door 1, and the cabin door 1 is movably connected to the door frame 2;

[0030] The sealing groove 4 is provided on the door frame 2;

[0031] The sealing member 3 is installed in the sealing groove 4, and a seal can be formed by squeezing the sealing member 3 of the hatch.

[0032] Preferably, the sealing member 3 is configured as a silicone structural member so that the sealing structure has good cold resistance, weather resistance and structural stability.

[0033] As a further embodiment of the present invention, the sealing member 3 includes a sealing member body 3-1 and a first sealing portion 3-2 and a second sealing portion 3-3 provided on the sealing member body 3-1;

[0034] The sealing body 3-1 is embedded in the sealing groove 4, and the first sealing part 3-2 and the second sealing part 3-3 are both arranged on the end surface of the sealing body 3-1 away from the sealing groove 4, and the first sealing part 3-2 and the second sealing part 3-3 are arranged at intervals from each other.

[0035] Furthermore, the first sealing portion 3-2 is configured as a first convex structure, and the end surface of the first convex structure away from the sealing body 3-1 is configured as an arc structure surface, that is, the cross section of the first sealing portion 3-2 is a convex hollow circle structure;

[0036] The second sealing part 3-3 is configured as a second raised structure, the end face of the second raised structure away from the sealing body 3-1 is configured as an arc structure surface, and a through hole is also provided on the central axis of the second raised structure, that is, the cross section of the second sealing part 3-3 is a raised solid circle structure.

[0037] Furthermore, the distance from the arc structure surface of the first convex structure to the seal body 3-1 is greater than the distance from the arc structure surface of the second convex structure to the seal body 3-1, that is, the outer diameter of the first sealing part 3-2 is greater than the outer diameter of the second sealing part 3-3.

[0038] Furthermore, the first sealing portion 3-2, the second sealing portion 3-3 and the sealing element body 3-1 are all integrally formed.

[0039] Furthermore, a plurality of ventilation holes 3 - 4 are provided on the first sealing portion 3 - 2 , and the plurality of ventilation holes 3 - 4 are spaced apart from each other along the length direction of the first sealing portion 3 - 2 .

[0040] Furthermore, in order to make the installation of the sealing member 3 more fixed and stable, an adhesive connection can be added between the sealing member 3 and the sealing groove 4, that is, the sealing member 3 is backed with glue.

[0041] As a further embodiment of the present invention, the working principle of the above-mentioned movable pressurized cabin door is as follows:

[0042] During normal use of the movable pressurized cabin door, the door handle 6 can be used to close the door 1 until the lock tongue of the door lock 5 is locked. At this time, the seal 3 is partially compressed by the door. This is done to ensure that the seal 3 contacts and is partially compressed with the door 1 before pressurization begins, facilitating the buildup of pressure in the pressurized area.

[0043] As the pressure continues to increase, the force acting on the hatch door 1 increases, causing the hatch door 1 to further compress the first sealing portion 3-2 on the sealing member 3. At this point, the first seal of the hatch door is formed.

[0044] When the pressure increases further, the second sealing portion 3-3 of the seal will also be compressed by the hatch door, forming a second seal for the hatch door. In addition, since the second sealing portion 3-3 is solid, it is difficult to be compressed further after being compressed to a certain level. Therefore, a certain position limit can be set on the hatch door to protect the seal from damage due to excessive compression.

[0045] The inner wall of the first sealing portion 3-2 is provided with uniform ventilation holes 3-4. Figure 3 As shown, the reason for opening the vent hole on the inner wall is mainly to allow the seal to rebound to its original shape after the pressure relief is completed. In addition, when the seal is compressed, the high-strength gas in the pressurized area can enter the first sealing part 3-2 through the vent hole 3-4, which can make the raised hollow tube fully compressed and in contact with the hatch, further ensuring the sealing of the hatch.

[0046] The sealing member of the present invention adopts a raised circular shape, a soft inner side and a hard outer side, and a high inner side and a low outer side structure. The structure is simple, easy to use, convenient to assemble and disassemble, and highly practical, and has a good sealing effect on the hatch of the movable pressurized room.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A door structure for a high-altitude movable pressurized room, characterized in that: It comprises a door (1), a door frame (2), a sealing member (3), a sealing groove (4), a door lock (5) and a door handle (6); The door lock (5) and the door handle (6) are both arranged on the cabin door (1), and the cabin door (1) is movably connected to the door frame (2); The sealing groove (4) is provided on the door frame (2); The sealing member (3) is installed in the sealing groove (4), and the sealing member (3) comprises a sealing member body (3-1) and a first sealing portion (3-2) and a second sealing portion (3-3) arranged on the sealing member body (3-1); The sealing element body (3-1) is installed in the sealing groove (4), the first sealing portion (3-2) and the second sealing portion (3-3) are both arranged on the end surface of the sealing element body (3-1) away from the sealing groove (4), and the first sealing portion (3-2) and the second sealing portion (3-3) are arranged at intervals from each other.

2. The hatch structure according to claim 1, characterized in that: The first sealing portion (3-2) is configured as a first convex structure, the end surface of the first convex structure away from the sealing element body (3-1) is configured as an arc structure surface, and a through hole is further provided on the central axis of the first convex structure; The second sealing portion (3-3) is configured as a second convex structure, and the end surface of the second convex structure away from the sealing element body (3-1) is configured as an arc structure surface.

3. The hatch structure according to claim 2, characterized in that: The distance between the arc structure surface of the first convex structure and the sealing element body (3-1) is greater than the distance between the arc structure surface of the second convex structure and the sealing element body (3-1).

4. The hatch structure according to claim 3, characterized in that: A plurality of vent holes (3-4) are also provided on the first sealing portion (3-2), and the plurality of vent holes (3-4) are spaced apart from each other along the length direction of the first sealing portion (3-2).

5. The hatch door structure according to any one of claims 1 to 4, characterized in that: The sealing body (3-1) is embedded in the sealing groove (4), and an adhesive layer is provided between the sealing body (3-1) and the sealing groove (4).

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