Cabin-penetrating sealing device and installation method of cabin-penetrating sealing device applied to underwater vehicle

Abstract

The invention relates to the technical field of cable sealing, and provides a cabin-penetrating sealing device and an installation method of the cabin-penetrating sealing device applied to an underwater vehicle, and the cabin-penetrating sealing device comprises a pipe body which divides a pipe cavity into a first sealing groove and a second sealing groove; the first sealing structure comprises a first sealing filler which fills a gap between the pipe body and the linear entity in the first sealing groove; the first fastener compresses the first sealing filler; the second sealing structure comprises a second sealing filler which is used for filling a gap between the pipe body and the linear entity in the second sealing groove; the second fastener compresses the second sealing filler; the third sealing structure comprises a third sealing filler which tightly holds the second fastener and the linear entity and wraps the second fastener in a sealed mode. And the fourth sealing structure comprises a first sealing mold, covers the third sealing structure and the outboard part of the pipe body, and is filled with fourth sealing filler. Multiple sealing ensures that the linear entity is fixed and sealed without leakage in the underwater navigation process, and the sealing effect is safe and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of cable sealing installation, and in particular to a cabin penetration sealing device and an installation method thereof in an underwater vehicle. Background Art

[0002] The design of the underwater vehicle's through-cabin electrical system requires the layout of dozens to hundreds of cables from inside the cabin to outside the cabin, and requires a seal between the cabin and the outside environment.

[0003] In particular, there are many types of cables provided by equipment manufacturers, and the materials of the cable outer sheaths are different, which places extremely high demands on sealing devices and sealing methods, especially the characteristics of sealing materials. Therefore, sealing materials, sealing devices and sealing methods are key. The sealing of extravehicular cables is a key process. Before construction, relevant procedures such as process verification and construction process capability confirmation must be performed. The sealing of extravehicular cables is directly related to the product safety of underwater vehicles. Due to the high pressure of the working environment of underwater vehicles (used at a maximum depth of 450-1500 meters underwater), many underwater vehicles are prone to cable sealing failure during use, which has become a technical problem that needs to be solved urgently in the field of cabin cable sealing technology. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a cabin penetration sealing device to solve the problems in the related art.

[0005] The first aspect of the present invention provides a cabin penetration sealing device, comprising: a tube body, which is extended along an axial direction to form a tube cavity for penetrating a linear entity; wherein an annular convex portion is formed on the inner wall of the tube cavity to separate the tube cavity to form a first sealing groove and a second sealing groove; the first sealing groove and the second sealing groove are respectively placed inside and outside the cabin; a first sealing structure, comprising: at least one first sealing filler, which fills the gap between the tube body and the linear entity in the first sealing groove; a first fastener, which enters the first sealing groove, is used to compress the first sealing filler and has a through hole for the linear entity to pass through; the second sealing structure, comprising: to At least one second sealing filler fills the gap between the tube body and the linear entity in the second sealing groove; a second fastener enters the second sealing groove, is used to compress the second sealing filler and has a through hole for the linear entity to pass through; a third sealing structure includes: a third sealing filler, which holds the second fastener and the linear entity together and seals and covers the intersection of the second fastener and the linear entity; a fourth sealing structure includes: a first sealing mold with a first sealing cavity, which seals the third sealing structure and the outer cabin part of the tube body in the first sealing cavity; a fourth sealing filler fills the gap in the first sealing cavity.

[0006] In an embodiment of the first aspect, the cabin penetration sealing device also includes at least one of the following structures: 1) a fifth sealing structure, including: a fifth sealing filler, filling the gap between the annular protrusion and the linear entity; 2) a sixth sealing structure, including: a sixth sealing filler, filling the gap between the through hole of the second fastener and the linear entity; 3) a seventh sealing structure, including: a seventh sealing filler, filling the gap between the through hole of the first fastener and the linear entity; 4) an eighth sealing structure, including: an eighth sealing filler, holding the first fastener and the linear entity together and sealingly covering the intersection of the first fastener and the linear entity; a ninth sealing structure, including: a second sealing mold having a second sealing cavity and a second sealing mold for passing the linear entity, sealing the eighth sealing structure and the cabin part of the tube body in the second sealing cavity; a ninth sealing filler, filling the gap in the second sealing cavity.

[0007] In an embodiment of the first aspect, there are more than two first sealing fillers arranged along the axial direction; the first sealing fillers are implemented as elastic material, and a compression gasket is provided between adjacent first sealing fillers; and / or the first sealing filler is an annular structure with a bevel opening, and when more than two first sealing fillers are provided, the bevel openings of adjacent first sealing fillers are staggered by a preset angle, and the material of the first sealing filler is implemented as at least one of the following: chloroprene rubber, ethylene propylene rubber, nitrile rubber, polyurethane rubber, and a polymer composite material of any one of them.

[0008] In an embodiment of the first aspect, a compression washer is provided between the first sealing filler, the first fastener and the annular protrusion; and / or a compression washer is provided between the second sealing filler, the second fastener and the annular protrusion.

[0009] In an embodiment of the first aspect, the compression gasket is implemented as any one of the following: 1) the compression gasket is made of one of the following materials: red copper, stainless steel, special engineering plastics; 2) the compression gasket is implemented as a stacked structure of multiple V-shaped sealing rings; the V-shaped sealing ring is made of one of the following materials: nitrile rubber, chloroprene rubber, natural rubber, butyl rubber, chlororubber.

[0010] In an embodiment of the first aspect, when the eighth sealing structure and the ninth sealing structure are present, the first sealing filler is implemented as a mixture of 3D fiber braid and sealant; and / or, the fifth sealing filler is implemented as sealant; and / or, the thickness of the sixth sealing filler is suitable for the through-hole gap between the second fastener and the linear entity, and the sixth sealing filler protrudes from the through-hole of the second fastener away from one end opening of the second sealing filler; and / or, the thickness of the seventh sealing filler is suitable for the through-hole gap between the first fastener and the linear entity, and protrudes from the through-hole of the first fastener away from one end opening of the first sealing filler.

[0011] In an embodiment of the first aspect, the cabin penetration sealing device is also implemented as at least one of the following structures: 1) there are more than two second sealing fillers arranged along the axial direction; 2) the second sealing filler is implemented as a mixture of 3D fiber braid and sealant; 3) the sealing filler in the gap between the through hole of the first fastener and / or the second fastener and the linear entity is formed by a fiber rope mixed with sealant axially wrapped around the outer wall of the linear entity; the fiber rope material is a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene; 4) the third sealing filler covering the outside of the second fastener is formed by a fiber rope mixed with sealant that is alternately cross-wound around the second fastener and the outer wall of the linear entity from opposite sides; and / or, covered The eighth sealing filler at the intersection of the first fastener and the linear entity is formed by a fiber rope mixed with sealant that is cross-wrapped around the first fastener and the outer wall of the linear entity; 5) The first sealing filler and / or the second sealing filler is implemented as an annular structure with a bevel opening that is sleeved outside the linear entity; the bevel openings of adjacent first sealing fillers are staggered by a preset angle, and / or the bevel openings of adjacent second sealing fillers are staggered by a preset angle; 6) The first fastener and the second fastener are threadedly matched with the notches of the first sealing groove and the second sealing groove respectively; 7) The first sealing mold is a cylindrical body that converges toward the outer end; 8) The first sealing mold is a cylindrical body with a tapered outer end; 9) The second sealing filler has a vacuum package with a desiccant that indicates the degree of moisture.

[0012] A second aspect of the present invention provides an installation method for a cabin penetration sealing device applied to an underwater vehicle, which is applied to the installation of the cabin penetration sealing device described in any one of the first aspects on an underwater vehicle, and the method comprises: S101: fixing the tube body on the cabin body of the underwater vehicle and passing a linear entity through the tube cavity, sequentially installing the first sealing filler and the first fastener in the first sealing groove to form a first sealing structure; S103: sequentially installing the second sealing filler and the second fastener in the second sealing groove to form a second sealing structure; S105: using a third sealing filler to hold the second fastener and the linear entity together and seal and cover the intersection of the second fastener and the linear entity; S107: covering the third sealing structure and the outer cabin part of the tube body in the first sealing cavity through a first sealing mold, and pouring a fourth sealing filler into the first sealing cavity from the gap.

[0013] In an embodiment of the second aspect, the underwater vehicle is a manned underwater vehicle, and there are more than two first sealing fillers arranged along the axial direction; the first sealing filler is implemented as an elastic material, and a compression gasket is provided between adjacent first sealing fillers; the first fastener is exposed; or, the underwater vehicle is an unmanned underwater vehicle, and the cabin penetration sealing device includes an eighth sealing structure and a ninth sealing structure covering the outside of the first fastener.

[0014] In an embodiment of the second aspect, at least one of the following is also included: 1) before S103, it also includes: filling the gap between the annular protrusion and the linear entity with a fifth sealing filler; 2) before installing the second fastener, forming a sixth sealing filler sleeved outside the linear entity and having a thickness suitable for the through-hole gap between the second fastener and the linear entity, so as to fill the gap between the through-hole of the second fastener and the linear entity when the second fastener is installed; 3) before installing the first fastener, forming a seventh sealing filler sleeved outside the linear entity, so as to fill the gap between the through-hole of the first fastener and the linear entity when the first fastener is installed; 4) after installing the first fastener, The first fastener and the linear entity are tightly embraced by the eighth sealing filler to seal and cover the intersection of the first fastener and the linear entity; the third sealing structure and the inner cabin part of the tube body are sealed in the second sealing cavity of the second sealing mold by the second sealing mold, and the ninth sealing filler is poured into the second sealing cavity from the gap; 5) Before and after installing each first sealing filler, a compression gasket is installed respectively; and / or, before and after installing the second sealing filler, a compression gasket is installed respectively; 6) When installing the first sealing filler and / or the second sealing filler, apply sealant as a lubricant; 7) When using sealant to fill the gap, determine the gap where the sealant overflows.

[0015] As described above, the present invention relates to the field of sealing technology, and provides a through-cabin sealing device and an installation method thereof for underwater vehicles, wherein the through-cabin sealing device comprises: a tube body, a tube cavity separating the tube cavity to form a first sealing groove and a second sealing groove; a first sealing structure comprising a first sealing filler filling the gap between the tube body and the linear entity in the first sealing groove; a first fastener pressing the first sealing filler; a second sealing structure comprising a second sealing filler filling the gap between the tube body and the linear entity in the second sealing groove; a second fastener pressing the second sealing filler; a third sealing structure comprising a third sealing filler, holding the second fastener and the linear entity together and sealingly covering the second fastener; a fourth sealing structure comprising a first sealing mold, enclosing the third sealing structure and the outer cabin part of the tube body, and filling the fourth sealing filler. Multiple seals ensure that the linear entity does not move and the seal does not leak during underwater navigation, and the sealing effect is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A schematic structural diagram of a cabin penetration sealing device in one embodiment of the present invention is shown.

[0017] Figure 2 A schematic structural diagram of a first sealing filler in an embodiment of the present invention is shown.

[0018] Figure 3 A schematic structural diagram of a second sealing filler in one embodiment of the present invention is shown.

[0019] Figure 4 A schematic structural diagram of a strip-shaped sealing body used to construct a second sealing filler in one embodiment of the present invention is shown.

[0020] Figure 5 A schematic structural diagram of a compression washer in one embodiment of the present invention is shown.

[0021] Figure 6 A schematic diagram showing the cross-sectional structure of a compression washer in another embodiment of the present invention is shown.

[0022] Figure 7 A schematic structural diagram of a cabin penetration sealing device in another embodiment of the present invention is shown.

[0023] Figure 8 A schematic flow chart showing a method for installing a cabin penetration sealing device according to an embodiment of the present invention.

[0024] Reference numerals: Cabin penetration sealing device 100; tube body 101; annular protrusion 1011; first sealing groove 1012; second sealing groove 1013; first sealing filler 102; first fastener 103; first compression gasket 104; second compression gasket 105; third compression gasket 106; second sealing filler 107; strip sealing body 107a; second fastener 108; third sealing filler 110; first sealing mold 111; fourth sealing filler 112; fifth sealing filler 113; sixth sealing filler 114; seventh sealing filler 115; eighth sealing filler 116; second sealing mold 117; ninth sealing filler 118; fourth compression gasket 119; fifth compression gasket 120; pressure-resistant body 200; linear entity 300; support ring 401; sealing ring 402; pressure ring 403. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the information disclosed by the present invention. The present invention can also be implemented or applied through other different specific embodiments, and the details of the present invention can also be modified or changed according to different viewpoints and application modules without departing from the spirit of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0026] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be embodied in many different forms and is not limited to the embodiments described herein.

[0027] In the representation of the present invention, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present invention and the features of different embodiments or examples without contradiction.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of the present invention, the meaning of "a group" is two or more, unless otherwise clearly and specifically defined.

[0029] In order to clearly describe the present invention, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0030] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0031] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0032] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present invention. The singular form used herein also includes the plural form as long as the sentence does not clearly indicate the opposite meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0033] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical documents and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless otherwise defined.

[0034] In the related technologies, the design of the underwater vehicle's through-cabin electrical system requires the layout of a large number of cables from inside the cabin to outside the cabin, and these cables need to be sealed between the inside and outside environments. However, due to the wide variety of cables and the different materials of the cable outer sheath, extremely high requirements are placed on the sealing device and sealing method, especially the characteristics of the sealing material. Therefore, the sealing material, sealing device and sealing method are key. The sealing of the cable outside the cabin is a key process. Before construction, relevant procedures such as process verification and construction process capability confirmation must be performed. The sealing work of the cable outside the cabin is directly related to the product safety of the underwater vehicle. Due to the high pressure of the working environment of the underwater vehicle (used at a maximum underwater depth of 450-1500 meters), many underwater vehicles are prone to cable sealing failure during use, which has become a technical problem that needs to be solved urgently in the field of through-cabin cable sealing technology.

[0035] In view of this, an embodiment of the present invention provides a cabin penetration sealing device to solve the above-mentioned technical problems through multiple sealing.

[0036] like Figure 1 As shown, a schematic diagram of the structure of a cabin penetration sealing device in one embodiment of the present invention is shown.

[0037] The penetration sealing device 100 includes a tube body 101, and the tube body 101 is fixed to a pressure-resistant body 200, and the fixing method may include, for example, welding. The two ends of the tube body 101 are open and form a tube cavity, which can be used for the linear entity 300 to pass through. In some embodiments, the linear entity 300 can be a cable or a pipeline. In some embodiments, the pressure-resistant body 200 can be a hull of an underwater vehicle. In some embodiments, the tube body 101 can be implemented as a cup-type pipe joint, which is a special pipe fitting used to connect pipes.

[0038] The inner wall of the tube cavity forms an annular convex portion 1011 to separate the tube cavity into a first sealing groove 1012 and a second sealing groove 1013; the first sealing groove 1012 and the second sealing groove 1013 are respectively placed inside and outside the cabin. The central through hole of the annular convex portion 1011 can be passed through by the linear entity 300.

[0039] In order to seal the linear entity 300 to the tube body 101 , the cabin penetration sealing device 100 further includes: a first sealing structure, a second sealing structure, a third sealing structure, and a fourth sealing structure.

[0040] The first sealing structure is used to seal the cabin part of the linear entity 300 with the tube body 101. The first sealing structure includes at least one first sealing filler 102 and a first fastener 103. The at least one first sealing filler 102 fills the gap between the tube body 101 and the linear entity 300 in the first sealing groove 1012 to form a seal. The first fastener 103 enters the first sealing groove 1012, is used to compress the first sealing filler 102, and has a through hole for the linear entity 300 to pass through.

[0041] exist Figure 1 In an embodiment, the number of the first sealing fillers 102 may be two or more. As an example, two of the first sealing fillers 102 are arranged in the first sealing groove 1012 along the axial direction of the tube cavity, and the annular convex portion 1011 constitutes a stop for one side of the first sealing filler 102. The first fastener 103 enters from the notch of the first sealing groove 1012 and reaches a position against the other side of the first sealing filler 102 to clamp the first sealing filler 102 between the annular convex portion 1011.

[0042] like Figure 2 FIG. 1 is a schematic diagram showing the structure of the first sealing filler 102 in one embodiment of the present invention. Figure 2 In the embodiment, the first sealing filler 102 is implemented as an annular structure with a bevel opening that is sleeved outside the linear entity 300. In some embodiments, when more than two first sealing fillers 102 are provided, the bevel openings of adjacent first sealing fillers 102 are staggered by a preset angle, thereby avoiding the problem of a large difference in elastic force between the bevel openings and other positions of the multiple first sealing fillers 102 in the circumferential direction. In a further optional embodiment, the bevel openings of more than two first sealing fillers 102 can be evenly arranged in the circumferential direction, for example, two bevel openings are staggered by 180° in the circumferential direction, three bevel openings are staggered by 120° in the circumferential direction, and so on.

[0043] In some embodiments, the first sealing filler 102 is implemented as an elastic material, and its material is implemented as at least one of the following: chloroprene rubber, ethylene propylene rubber, nitrile rubber, polyurethane rubber, and any polymer composite material thereof. The first sealing filler 102 made of elastic material is referred to as "elastic filler" for short. The elastic filler can adapt to elastic changes under external pressure and temperature changes, and can effectively resist pressure changes to tighten the sealing cable to form a dynamic seal. Furthermore, the number of the elastic fillers can be more than two ( Figure 1In the example, there are two elastic fillers, more than two of which are arranged along the axial direction (which can be defined as the first elastic filler and the second elastic filler, respectively), and a first compression gasket 104 can be provided between adjacent first sealing fillers 102. By providing more than two elastic fillers, a larger elastic deformation can be obtained when under pressure compared to a single elastic filler, so as to better relieve the pressure. In some embodiments, the upper and lower surfaces of the elastic filler may be planes to connect with the planes between the compression gaskets to maintain better sealing. In some embodiments, the height of the plurality of elastic fillers may account for a predetermined proportion of the depth of the first sealing groove 1012, such as 60% to 70%.

[0044] In some embodiments, a second compression washer 105 is provided between the first sealing filler 102 and the first fastener 103, and a third compression washer 106 may also be provided between the first sealing filler 102 and the annular protrusion 1011. That is, the third compression washer 106, the first elastic filler, the first compression washer 104, the second elastic filler, the second compression washer 105 and the first fastener 103 are sequentially provided from the annular protrusion 1011 at the bottom of the first sealing groove 1012 to the notch. In an optional embodiment, in order to avoid a gap between the third compression washer 106 and the annular protrusion 1011 and the groove wall of the first sealing groove 1012 when the third compression washer 106 is installed, the third compression washer 106 can be placed in the bottom of the first sealing groove 1012 after being soaked with sealant, and it is confirmed that it is in place and the sealant overflows from the gap to ensure that the gap is exhausted.

[0045] In some embodiments, the first fastener 103 can be implemented as a first compression nut, which is threadedly matched with the notch wall of the first sealing groove 1012, so that the first compression nut can be screwed into the first sealing groove 1012 to compress and fix the first sealing filler 102 to fix the cabin part of the linear entity. The first sealing filler 102 and the like will expand and deform laterally under the pressure of the first fastener 103 to eliminate the gap between the linear entity 300 and the tube body 101 and be pressed against the linear entity 300, so as to achieve the fastening and sealing of the linear entity 300 in the first sealing groove 1012. In some embodiments, the axial position of the first fastener 103 entering the notch of the first sealing groove 1012 can be determined according to the tightening torque of the first fastener 103 reaching a preset value.

[0046] It is understandable that, in other embodiments, the first fastener 103 can also be implemented as other movable rear axial position positioning mechanisms, such as a linear motion mechanism driven and locked by a cylinder or a motor, etc., and is not limited to the above-mentioned threaded member.

[0047] Thus, through the first sealing structure, the first sealing filler 102 is compressed by the first fastener 103 to expand and embrace the linear entity and press against the wall of the tube cavity to form a seal; and the gaps between the first compression gasket 104, the second compression gasket 105, and the third compression gasket 106 and the linear entity 300 and the inner wall of the tube cavity are all filled with sealant to form a bonding seal, thereby achieving the effect of fastening and double sealing of the linear entity (sealing of the first sealing filler 102, and bonding sealing of the compression gasket combined with the sealant).

[0048] The second sealing structure includes at least one second sealing filler 107 and a second fastener 108. The at least one second sealing filler 107 fills the gap between the tube body 101 and the linear entity 300 in the second sealing groove 1013. The second fastener 108 enters the second sealing groove 1013, is used to compress the second sealing filler 107, and has a through hole for the linear entity 300 to pass through.

[0049] like Figure 3 , which shows a schematic structural diagram of the second sealing filler 107 in one embodiment of the present invention.

[0050] exist Figure 3 In FIG. 3 , the second sealing filler 107 is implemented as a ring structure with a bevel opening and is sleeved outside the linear entity 300. Figure 4 As shown, a strip-shaped sealing body 107a is shown, and the cross section of the strip-shaped sealing body 107a can be, for example, square, etc. The strip-shaped sealing body 107a is annularly bent and a bevel opening is cut out to form the second sealing filler 107 .

[0051] In some embodiments, the second sealing filler 107 is implemented as a mixture of 3D fiber braid and sealant. 3D means that the fibers are woven in a 3D structure. Specifically, the 3D fiber braid includes an outer mesh surface layer, an inner mesh surface layer and a core wire connecting layer. The core wires in the core wire connecting layer connect the outer mesh surface layer and the inner mesh surface layer in a vertical cross-supporting manner of X-90°, which can provide better support and buffer protection. In some embodiments, the 3D fiber braid is implemented as a mixed fiber of one or more materials of carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. Under external pressure and temperature changes, the 3D fiber braided filler can change elastically and dynamically and effectively tighten the sealing linear entity 300. In addition, since the second sealing groove 1013 will be placed outside the cabin, especially in the high-pressure scenario where the underwater vehicle works 400 to 1500 meters underwater, the use of 3D fiber braid to construct the second sealing filler 107 can obtain better compressive strength.

[0052] In some embodiments, the second sealing filler 107 has a vacuum package with a desiccant indicating the moisture level to extend its life. The desiccant may change color when the moisture absorption reaches a certain level, indicating that drying is required. Thus, according to the prompt, the second sealing filler 107 can be thermally dried or blown dry to restore performance and extend its life.

[0053] In some embodiments, the second sealing filler 107 may also have more than two arranged along the axial direction. Figure 1 The example is two. In some embodiments, a fourth compression washer 119 may be arranged between the second sealing filler 107 close to the annular protrusion 1011 and the annular protrusion 1011, and a fifth compression washer 120 may be arranged between the second sealing filler 107 away from the annular protrusion 1011 and the second fastener 108. That is, the fourth compression washer 119, two or more second sealing fillers 107, the fifth compression washer 120 and the second fastener 108 are sequentially installed from the annular protrusion 1011 at the bottom of the second sealing groove 1013 to the notch. In an optional embodiment, in order to avoid a gap between the fourth compression washer 119 and the annular protrusion 1011 and the groove wall of the second sealing groove 1013 when the fourth compression washer 119 is installed, the fourth compression washer 119 can be placed in the bottom of the second sealing groove 1013 after being soaked with sealant, and it is confirmed that it is in place and the sealant overflows from the gap to ensure that the gap is completely exhausted.

[0054] In some embodiments, when more than two second sealing fillers 107 are provided, the inclined openings of adjacent first sealing fillers 102 are staggered by a preset angle, thereby avoiding the problem of a large difference in elastic force between the inclined openings and other positions in the circumferential direction of the multiple second sealing fillers 107. In a further optional embodiment, the inclined openings of more than two second sealing fillers 107 can be evenly arranged in the circumferential direction, for example, two inclined openings are staggered by 180° in the circumferential direction, three inclined openings are staggered by 120° in the circumferential direction, and so on.

[0055] In some optional embodiments, when installing the second sealing filler 107 to the second sealing groove 1013, sealant can be applied to the surface of the second sealing filler 107 first, and then the second sealing filler 107 bent into a ring shape is wrapped and sleeved outside the linear entity, and the second sealing filler 107 can be cut to form the inclined opening. Among them, the applied sealant not only plays a sealing role of filling the gap, but also plays a role of lubricant. The inclined opening example is 45° or other inclined angles. Each of the second sealing fillers 107 is installed in the second sealing groove 1013 in sequence in the above manner. After the first second sealing filler 107 is installed, force can be applied to it by a tool to tamp it (without touching the inner wall of the tube cavity) to fit the bottom of the first sealing groove 1012. In some optional embodiments, after each second sealing filler 107 is installed, the exposed gap (including the annular gap between the second sealing filler 107 and the inner wall of the tube cavity) can be filled with glue, and it can be ensured that the sealant overflows from the gap to ensure that the gap is completely exhausted.

[0056] Thus, through the second sealing structure, the second sealing filler 107 is compressed by the second fastener 108 to expand and embrace the linear entity and press against the wall of the tube cavity to form a seal, and can cooperate with the sealant to fill the gap to ensure the sealing effect; and the fourth compression gasket 119, the fifth compression gasket 120 and the gap between the linear entity 300 and the inner wall of the tube cavity are all filled with sealant to form a bonding seal, thereby achieving the effect of fastening the linear entity and double sealing.

[0057] In some embodiments, the second fastener 108 can be implemented as a second compression nut, which is threadedly matched with the notch wall of the second sealing groove 1013. By rotating the second compression nut, it can enter the second sealing groove 1013 to compress and fix the second sealing filler 107 to fix the outer cabin part of the linear entity. The second sealing filler 107 and the like will expand laterally under the pressure of the second fastener 108 to eliminate the gap between the linear entity 300 and the tube body 101 and be pressed against the linear entity 300, so as to achieve the fastening and sealing of the linear entity 300 in the second sealing groove 1013. In some embodiments, the axial position of the second fastener 108 entering the notch of the second sealing groove 1013 can be determined according to the tightening torque of the second fastener 108 reaching a preset value.

[0058] It is understandable that in other embodiments, the second fastener 108 can also be implemented as other movable and axially positioned mechanisms, such as a linear motion mechanism driven and locked by a cylinder or a motor, etc., and is not limited to the above-mentioned threaded member.

[0059] In some embodiments, the compression washers used (such as the first compression washers 104 to the fifth compression washers 120) are made of at least one of the following materials: copper, stainless steel, special engineering plastics (such as PEEK, POM, etc.). Figure 5 In the structural diagram shown, taking the first compression washer 104 as an example, two or more small holes 1041 can be drilled on the surface of the first compression washer 104 for easy removal. It is understandable that the second compression washer 105, the third compression washer 106, the fourth compression washer 119, the fifth compression washer 120, etc. can also be Figure 5 The third compression washer 106 and the fourth compression washer 119 are plane structures in the embodiment, but due to the different setting positions, the third compression washer 106 and the fourth compression washer 119 can be combined with the annular protrusion 1011, so the structure can be slightly different from the first compression washer 104, the second compression washer 105, and the fifth compression washer 120. For example, one side of the third compression washer 106 and the fourth compression washer 119 can have a protruding structure (such as a continuous ring, a ring segment, a plunger, etc.) that is inserted into the circular hole of the annular protrusion 1011 in a shape-fitting manner, so that the third compression washer 106 and the fourth compression washer 119 can present a "T" shape on the side), while the two side surfaces of the first compression washer 104, the second compression washer 105, and the fifth compression washer 120 can be planes without a protruding structure.

[0060] In some other embodiments, the first to fifth compression washers 104 to 120 may also be implemented as a stacked structure of multiple V-shaped sealing rings. Figure 6The structure of the cross-section of multiple V-shaped sealing rings shown in the figure, the stacked structure of the multiple V-shaped sealing rings includes a supporting ring 401, a sealing ring 402, and a pressing ring 403 stacked in sequence along the axial direction, the supporting ring 401, the sealing ring 402, and the pressing ring 403 are coaxially arranged and each has a through hole corresponding to the position for the target object (such as the linear entity 300) to pass through, the annular surface of the supporting ring 401 facing the sealing ring 402, and the annular surface of the sealing ring 402 facing the pressing ring 403 are V-shaped convex surfaces, the annular surface of the sealing ring 402 facing the supporting ring 401, and the annular surface of the pressing ring 403 facing the sealing ring 402 are V-shaped concave surfaces, and the V-shaped convex surface and the V-shaped concave surface are combined in a shape matching manner to form a good seal. As an example, the annular surface of the pressing ring 403 away from the sealing ring 402 can be a plane. In the application scenario of the embodiment of the present invention, when the third compression washer 106 and the fourth compression washer 119 are implemented as a superimposed structure of multiple V-shaped sealing rings, they are configured so that the annular surface corresponding to the annular protrusion 1011 is the plane of the pressure ring 403, so that they can be tightly against the annular protrusion 1011. When the second compression washer 105 and the fifth compression washer 120 are implemented as a superimposed structure of multiple V-shaped sealing rings, they are configured so that the annular surface corresponding to the first fastener 103 / the second fastener 108 is the plane of the pressure ring 403, so as to be tightly against each other. In some embodiments, the material of the V-shaped sealing ring is one of the following: nitrile rubber, chloroprene rubber, natural rubber, butyl rubber, chlororubber.

[0061] The third sealing structure includes a third sealing filler 110, and the third sealing filler 110 is sealed and covered at the intersection of the second fastener 108 and the linear entity 300 by holding the second fastener 108 and the linear entity 300. The third sealing filler 110 can fasten the second fastener 108 and the linear entity 300, and also forms a seal from the second fastener 108 on the outside to the inside by completely covering the surface of the second fastener 108 exposed in the second sealing groove 1013 and holding the linear entity.

[0062] In some embodiments, the third sealing filler 110 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is made of a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. In some embodiments, the second fastener 108 includes a connected cylindrical portion and an end portion, the cylindrical portion is combined with the second sealing groove 1013 (such as threaded engagement), and the diameter of the end portion is greater than that of the cylindrical portion. The arrangement of the third sealing filler 110 can be completed by first circumferentially wrapping the fiber rope mixed with (for example, impregnated with) sealant to cover the cylindrical portion and extending to the end portion, and then cross-wrapping the end portion and the linear entity 300 to hold the second fastener 108 and the linear entity 300 together to cover and seal. As an example, the cross winding may be, for example, winding obliquely upward / downward from one side of the second fastener 108 as the starting side (e.g., the left side / right side) to the opposite side (e.g., the right side / left side) of the linear entity 300, winding the linear entity 300 circumferentially back to the starting side, then winding obliquely downward / upward to the opposite side of the linear entity 300 to form a cross, and winding circumferentially back to the starting side. The winding is repeated in this way and can be wound in a cross winding or other winding manner to extend to the end of the tube body 101 ( Figure 1 The upper end is shown in the figure to completely cover the outer surface of the second fastener 108 and the gap between the second fastener 108 and the end of the tube body 101, completing the sealing setting of the third sealing filler 110. The cross-winding method can restrict the relative movement between the linear entity 300 and the second fastener 108 in more directions, so that the two are not easily separated to produce a gap, thereby ensuring a good sealing effect. It should be noted that the cross-winding method cited above is only an illustration and can be changed in actual scenarios. For example, it can be wound multiple times along one oblique direction and then cross-wound multiple times along another oblique direction, etc. It is not limited to the above examples. By cross-winding the third sealing filler 110, the following can be formed: Figure 1 The conical seal shown in FIG. 1 needs to be tight and rounded.

[0063] The fourth sealing structure includes a first sealing mold 111 and a fourth sealing filler 112. The first sealing mold 111 has a first sealing cavity, and the first sealing mold 111 seals the third sealing structure and the outer part of the tube body 101 in the first sealing cavity. The fourth sealing filler 112 fills the gap in the first sealing cavity to form a seal between the third sealing structure and the tube body 101 and the outer environment of the cabin. Specifically, the first sealing mold 111 is fixedly installed to the pressure-resistant body 200 to form a gap to be sealed between the inner wall of the first sealing cavity and the tube body 101, the third sealing structure, and the linear entity 300 passing through the third sealing structure. The fourth sealing filler 112 is exemplified as a sealant, which can be poured into the first sealing cavity from the gap of the first sealing mold 111 (for example, the gap between the linear entity 300, etc.) to fill the gap, and after curing, the fourth sealing structure is formed.

[0064] In some embodiments, the first sealing mold 111 can be selected to be a cylindrical body that converges toward one end. For example, the first sealing mold 111 is a cylindrical body with a tapered outer end, for example, the first sealing mold 111 is a spindle-shaped body as a whole. Through the specific shape of the cylindrical body that converges toward one end, the first sealing mold 111 can effectively alleviate the pressure impact of the fluid on the cabin sealing device and enhance the sealing reliability.

[0065] To enhance the sealing effect, in some embodiments, the penetration sealing device 100 may further include a fifth sealing structure for sealing between the annular convex portion 1011 and the linear entity 300. Specifically, the fifth sealing structure includes a fifth sealing filler 113 to fill the gap between the annular convex portion 1011 and the linear entity 300. In some embodiments, the fifth sealing filler 113 is implemented as a sealant. Specifically, after the first sealing structure is installed, the sealant can be poured from one side of the second sealing groove 1013 to the annular convex portion 1011 to fill the gap between the annular convex portion 1011 and the linear entity 300. Preferably, the poured sealant can at least completely cover the bottom of the second sealing groove 1013 to reduce and eliminate the gap between the fourth compression gasket 119. In addition, the third compression gasket 106 and the fourth compression gasket 119 can be pre-soaked with sealant when they are installed in the tube cavity, and the sealant overflows the gap after installation, which can effectively ensure that the gap can be eliminated and the sealing effect can be guaranteed.

[0066] To enhance the sealing effect, in some embodiments, the penetration sealing device 100 may further include a sixth sealing structure for sealing between the through hole of the second fastener 108 and the linear entity 300. Specifically, the sixth sealing structure includes a sixth sealing filler 114 to fill the gap between the through hole of the second fastener 108 and the through hole of the linear entity 300. In some embodiments, the width of the sixth sealing filler 114 may be adapted to the through hole gap. The length of the sixth sealing filler 114 is set to be able to abut against the fifth compression gasket 120 at one end, and the other end may protrude from the through hole of the second fastener 108 away from the end opening of the second sealing filler 107, and connect with the third sealing structure to minimize the gap as much as possible, and the sealant can easily fill the gap. In some embodiments, the sixth sealing filler 114 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is made of a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. As an example, the sixth sealing filler 114 can be formed by spirally winding a fiber rope mixed with sealant around the linear entity 300, and the sixth sealing filler 114 is wound to a width suitable for the through-hole gap and a length such that one end of the sixth sealing filler 114 protrudes from the hole opening, so that when the second fastener 108 is installed, the sixth sealing filler 114 is filled into the through-hole gap between the second fastener 108 and the linear entity 300 as the second fastener 108 penetrates into the second sealing groove 1013, and does not hinder the penetration of the second fastener 108. In some embodiments, the sixth sealing filler 114 can also be pre-wound around at least a portion of the fifth compression gasket 120 to enhance the sealing effect.

[0067] Figure 1 In the embodiment, a through-cabin sealing device 100 having six sealing structures corresponding to the inside and outside of the cabin is provided, and a reliable sealing effect can be provided in an underwater vehicle through a multi-sealing structure. Figure 1 The cabin penetration sealing device 100 in the embodiment can be applied to manned underwater vehicles. The user can choose whether to tighten the first fastener 103 to maintain the sealing effect on one side of the cabin according to the actual sealing looseness situation, thereby realizing manual dynamic adjustment of the sealing effect.

[0068] In some other embodiments, for an unmanned underwater vehicle or a manned underwater vehicle that does not need to manually adjust the seal, one side of the first sealing groove 1012 can be directly sealed.

[0069] like Figure 7 , which shows a schematic structural diagram of a cabin penetration sealing device 100 in another embodiment of the present invention.

[0070] exist Figure 7In the embodiment, the cabin penetration sealing device 100 includes not only the first to sixth sealing structures, but also a seventh sealing structure, an eighth sealing structure and a ninth sealing structure. A symmetrical sealing structure is realized inside and outside the cabin. It should be noted that in the symmetrical sealing structure inside and outside the cabin, since manual adjustment by the user is no longer required, the elasticity requirement for the first sealing filler 102 is reduced. Therefore, the first sealing filler 102 may not use the elastic filler described in the previous embodiment, but may choose to use the material of the second sealing filler, such as 3D fiber braid or non-3D fiber braid with relatively low strength, and the provision of the first compression gasket 104 is no longer necessary. Figure 7 Eliminate in.

[0071] It should be specially noted that the fifth sealing structure, the sixth sealing structure and the seventh sealing structure are optional arrangements and are not limited to those shown in the figures.

[0072] The seventh sealing structure is used for sealing between the through hole of the first fastener 103 and the linear entity 300. The implementation of the seventh sealing structure can refer to the sixth sealing structure. Specifically, the seventh sealing structure includes a seventh sealing filler 115, which fills the through hole gap between the through hole of the first fastener 103 and the through hole of the linear entity 300. In some embodiments, the width of the seventh sealing filler 115 can be adapted to the through hole gap. The length of the seventh sealing filler 115 is set to be able to abut against the fifth compression washer 120 at one end, and the other end can protrude from the through hole of the first fastener 103 away from the end opening of the second sealing filler 107, and connect with the third sealing structure to minimize the gap as much as possible, and the sealant can easily fill the gap. In some embodiments, the seventh sealing filler 115 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is made of a mixed fiber of one or more materials such as carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. As an example, the seventh sealing filler 115 can be formed by spirally winding a fiber rope mixed with sealant around the linear entity 300, and the width of the winding is suitable for the through-hole gap, and the length is such that one end of the seventh sealing filler 115 protrudes from the hole opening, so that when the first fastener 103 is installed, the seventh sealing filler 115 is filled into the through-hole gap between the first fastener 103 and the linear entity 300 as the first fastener 103 penetrates into the second sealing groove 1013, and will not hinder the penetration of the first fastener 103. In some embodiments, the seventh sealing filler 115 can also be pre-wound around at least a portion of the second compression gasket 105 to enhance the sealing effect.

[0073] The eighth sealing structure is used for sealing between the through hole of the first fastener 103 and the linear entity 300. The eighth sealing structure includes an eighth sealing filler 116, and the eighth sealing filler 116 is sealed and coated on the intersection of the first fastener 103 and the linear entity 300 together with the first fastener 103. The implementation of the eighth sealing structure can refer to the third sealing structure, and the first fastener 103 can be a compression nut that is the same or similar to the second fastener 108, including a connected cylindrical part and an end part. The eighth sealing filler is similar to the third sealing filler 110. In some embodiments, the eighth sealing filler 116 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. In some embodiments, the eighth sealing filler 116 can be set by winding the fiber rope mixed with (for example, impregnated with) sealant around the first fastener 103 and the cabin part of the linear entity 300 in a circumferential or cross-winding manner.

[0074] The ninth sealing structure is similar to the fourth sealing structure in implementation. The ninth sealing structure includes: a second sealing mold 117 having a second sealing cavity and a linear entity 300 passing through, and a ninth sealing filler 118. The second sealing mold 117 seals the eighth sealing structure and the cabin part of the tube body 101 in the second sealing cavity. The ninth sealing filler 118 fills the gap in the second sealing cavity. Specifically, the second sealing mold 117 is fixedly mounted to the pressure-resistant body 200 to form a gap to be sealed between the inner wall of the second sealing cavity and the tube body 101, the eighth sealing structure, and the linear entity 300 passing through the eighth sealing structure. The ninth sealing filler 118 is exemplified as a sealant, which can be poured into the second sealing cavity from the gap of the second sealing mold 117 (for example, the gap between the linear entity 300, etc.) to fill the gap, and then solidify to form the ninth sealing structure.

[0075] The nine-sealing structure can ensure a leak-free sealing effect in the high-pressure environment of underwater navigation without the need for manual adjustment of the seal, making it very suitable for unmanned underwater vehicles.

[0076] In some embodiments, the sealant may include epoxy adhesive, organic silicone adhesive, acrylate adhesive, polyurethane adhesive, or poly-modified urethane adhesive. In a further preferred embodiment, the sealant may be a two-component (weight ratio of component A: component B = 1:1), viscous vacuum filling sealant (double-tube glue), which is dispensed using a double-tube glue gun and a mixing tube, and the two-component sealant is fully mixed in the mixing tube in a vacuum and then dispensed through the double-tube glue cavity for use.

[0077] An underwater vehicle described in an embodiment of the present invention includes a cabin and a cabin penetration sealing device 100 fixed to the cabin. The cabin penetration sealing device 100 can be selected as the structure shown in any of the previous embodiments, such as Figure 1 , Figure 7 Or a cabin penetration sealing device 100 with a sealing structure combination of a selectively set / not set optional sealing structure.

[0078] like Figure 8 FIG. 2 is a flow chart showing a method for installing a penetration seal device 100 in an underwater vehicle according to an embodiment of the present invention. The installation method can be applied to the installation of the penetration seal device 100 in the previous embodiment.

[0079] The method comprises: S101: The tube body 101 is fixed to the underwater vehicle cabin and the linear entity 300 is passed through the tube cavity. The first sealing filler 102 and the first fastener 103 are sequentially installed in the first sealing groove 1012 to form a first sealing structure.

[0080] In some embodiments, if there are multiple first sealing fillers 102, the first compression gasket 104, the first first sealing filler 102, the second compression gasket 105, the second first sealing filler 102, the third compression gasket 106, and the first fastener 103 can be sequentially installed into the first sealing groove 1012 to form a first sealing structure.

[0081] Optionally, in an embodiment of the cabin penetration sealing device 100 with a six-pass sealing structure, the first sealing filler 102 may be selected as an elastic filler.

[0082] In an optional embodiment, in order to avoid leaving a gap between the third clamping gasket 106 and the annular protrusion 1011 and the wall of the first sealing groove 1012 when the third clamping gasket 106 is installed, the third clamping gasket 106 can be placed at the bottom of the first sealing groove 1012 after being soaked with sealant, and confirmed to be in place and the sealant overflows from the gap to ensure that the gap is exhausted.

[0083] In an optional embodiment, after each installation of one of the first sealing filler 102, the first compression gasket 104, and the second compression gasket 105 is completed, a sealant may be injected to fill the gap.

[0084] In an optional embodiment, when the first fastener 103 is tightened in place (which can be determined based on the torque reaching a preset value), a certain first thread margin may be left outside the notch of the first sealing groove 1012 .

[0085] Optionally, before installing the second fastener 108, a sixth sealing filler 114 is formed which is sleeved outside the linear entity 300 and has a thickness suitable for the through-hole gap between the second fastener 108 and the linear entity 300, so as to fill the gap between the through-hole of the second fastener 108 and the linear entity 300 when the second fastener 108 is installed.

[0086] In some embodiments, the width of the sixth sealing filler 114 may be adapted to the through-hole gap. The length of the sixth sealing filler 114 is set to be able to abut against the fifth compression gasket 120 at one end, and the other end may protrude from the through-hole of the second fastener 108 away from one end opening of the second sealing filler 107, and connect with the third sealing structure to minimize the gap as much as possible, and the sealant can easily fill the gap. In some embodiments, the sixth sealing filler 114 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is made of a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. As an example, the sixth sealing filler 114 can be formed by spirally winding a fiber rope mixed with sealant around the linear entity 300.

[0087] In an optional embodiment, when the fifth compression washer 120 is placed, a section of the sixth sealing filler 114 (i.e., a fiber rope mixed with sealant) is wound on the fifth compression washer 120, and the fiber rope soaked with sealant is tightly spirally wound on the linear entity 300 outside the fifth compression washer 120. Sealant is injected between the outer side of the fifth compression washer 120 and the surface of the linear entity 300, and the injection amount is estimated according to the size of the gap between the second compression nut and the cable. The winding height of the sixth sealing filler 114 is slightly higher than the height of the second fastener 108 (i.e., the compression nut), so that it can protrude from the second fastener 108, and the winding outer diameter is smaller than the inner diameter of the second fastener 108, so that the second fastener 108 will not be blocked from entering the second sealing groove 1013, ensuring that the second fastener 108 can be installed in the second sealing groove 1013 so that its through hole can be smoothly fitted on the linear entity 300 during installation, and the sixth sealing filler 114 wound on the linear entity is filled into the through hole gap to achieve sealing.

[0088] Optionally, before installing the first fastener 103 , the method may further include: forming a seventh sealing filler 115 sleeved outside the linear entity 300 to fill the gap between the through hole of the first fastener 103 and the linear entity 300 when the first fastener 103 is installed.

[0089] Optionally, between steps S101 to S103 , the method may further include: filling a gap between the annular protrusion 1011 and the linear entity 300 with a fifth sealing filler 113 .

[0090] In some embodiments, the fifth sealing filler 113 is implemented as sealant. Specifically, after installing the first sealing structure, the sealant can be poured from one side of the second sealing groove 1013 to the annular protrusion 1011 to fill the gap between the annular protrusion 1011 and the linear entity 300. Preferably, the poured sealant can at least completely cover the bottom of the second sealing groove 1013 to reduce or eliminate the gap between the fourth compression gasket 119.

[0091] S103: installing the second sealing filler 107 and the second fastener 108 in the second sealing groove 1013 in sequence to form a second sealing structure.

[0092] In some embodiments, a fourth compression washer 119 , two or more second sealing fillers 107 , a fifth compression washer 120 and a second fastener 108 may be sequentially installed from the annular protrusion 1011 at the bottom of the second sealing groove 1013 to the notch.

[0093] In an optional embodiment, in order to avoid leaving a gap between the fourth clamping gasket 119 and the annular protrusion 1011 and the wall of the second sealing groove 1013 when it is installed, the fourth clamping gasket 119 can be placed at the bottom of the second sealing groove 1013 after being soaked with sealant, and confirmed to be in place and the sealant overflows from the gap to ensure that the gap is completely exhausted.

[0094] In an optional embodiment, after each installation of the second sealing filler 107 , the fourth compression gasket 119 , and the fifth compression gasket 120 , a sealant may be injected to fill the gap.

[0095] In an optional embodiment, when the first fastener 103 is tightened in place (which can be determined based on the torque reaching a preset value), a certain first thread margin may be left outside the notch of the first sealing groove 1012 .

[0096] S105 : Using the third sealing filler 110 to hold the second fastener 108 and the linear entity 300 together, and sealingly covering the intersection of the second fastener 108 and the linear entity 300 .

[0097] In some embodiments, the third sealing filler 110 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is made of a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. In some embodiments, the second fastener 108 includes a connected cylindrical portion and an end portion, the cylindrical portion is combined with the second sealing groove 1013 (such as threaded engagement), and the diameter of the end portion is greater than that of the cylindrical portion. The arrangement of the third sealing filler 110 can be completed by first circumferentially wrapping the fiber rope mixed with (for example, impregnated with) sealant to cover the cylindrical portion and extending to the end portion, and then cross-wrapping the end portion and the linear entity 300 to hold the second fastener 108 and the linear entity 300 together to cover and seal.

[0098] S107: The third sealing structure and the outer portion of the tube body 101 are sealed in the first sealing cavity by means of the first sealing mold 111, and a fourth sealing filler 112 is poured into the first sealing cavity from the gap.

[0099] The first sealing mold 111 has a first sealing cavity, and the first sealing mold 111 seals the third sealing structure and the outer part of the tube body 101 in the first sealing cavity, and the fourth sealing filler 112 fills the gap in the first sealing cavity to form a seal between the third sealing structure and the tube body 101 and the outer environment. Specifically, the first sealing mold 111 is fixedly installed to the pressure-resistant body 200, forming a gap to be sealed between the inner wall of the first sealing cavity and the tube body 101, the third sealing structure, and the linear entity 300 passing through the third sealing structure. The fourth sealing filler 112 is exemplified as a sealant, which can be poured into the first sealing cavity from the gap of the first sealing mold 111 (for example, the gap between the linear entity 300, etc.) to fill the gap, and after curing, to form the fourth sealing structure.

[0100] As an example, when installing the first sealing mold 111, its sealing surface can be roughened and cleaned to enhance the sealing connection effect. After the first sealing mold 111 is fixed to the pressure-resistant body 200, according to whether the tube body 101 is placed vertically, horizontally or inverted, a suitable gap can be selected to inject sealant into the first sealing cavity layer by layer as the fourth sealing filler 112. During the injection, the first sealing mold 111 can be knocked and vibrated to evenly distribute the sealant and expel bubbles until all gaps in the sealing contact area in the first sealing mold 111 are filled with sealant and visible bubbles are eliminated.

[0101] Optionally, after installing the first fastener 103 in step S101, Figure 7 When the nine-sealing structure is shown, the method may further include: i) The eighth sealing filler 116 is used to hold the first fastener 103 and the linear entity 300 together and seal the intersection of the first fastener 103 and the linear entity 300.

[0102] In some embodiments, the eighth sealing filler 116 includes a mixture of fiber rope and sealant. Optionally, the fiber rope is made of a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene. In some embodiments, the first fastener 103 includes a connected cylindrical portion and an end portion, the cylindrical portion is combined with the first sealing groove 1012 (such as threaded engagement), and the diameter of the end portion is greater than that of the cylindrical portion. The arrangement of the eighth sealing filler 116 can be completed by first circumferentially wrapping the fiber rope mixed with (for example, impregnated with) sealant to cover the cylindrical portion and extending to the end portion, and then cross-wrapping the end portion and the linear entity 300 to embrace the first fastener 103 and the linear entity 300 together to cover and seal.

[0103] ii) The third sealing structure and the inner part of the tube body 101 are sealed in the second sealing cavity by a second sealing mold 117, and a ninth sealing filler 118 is poured into the second sealing cavity from the gap.

[0104] The second sealing mold 117 has a second sealing cavity, and the second sealing mold 117 seals the eighth sealing structure and the outer part of the tube body 101 in the second sealing cavity, and the ninth sealing filler 118 fills the gap in the second sealing cavity to form a seal between the second sealing structure and the tube body 101 and the outer environment. Specifically, the second sealing mold 117 is fixedly installed to the pressure-resistant body 200, forming a gap to be sealed between the inner wall of the second sealing cavity and the tube body 101, the second sealing structure, and the linear entity 300 passing through the eighth sealing structure. The ninth sealing filler 118 is exemplified as a sealant, which can be poured into the first sealing cavity from the gap of the second sealing mold 117 (for example, the gap between the linear entity 300, etc.) to fill the gap, and after curing, to form a fourth sealing structure.

[0105] As an example, when installing the second sealing mold 117, its sealing surface can be roughened and cleaned to enhance the sealing connection effect. After the second sealing mold 117 is fixed to the pressure-resistant body 200, according to whether the tube body 101 is placed vertically, horizontally or inverted, a suitable gap can be selected to inject sealant into the second sealing cavity layer by layer as the fourth sealing filler 112. During the injection, the second sealing mold 117 can be knocked and vibrated to evenly distribute the sealant and expel bubbles until all gaps in the sealing contact area of ​​the second sealing mold 117 are filled with sealant to eliminate visible bubbles.

[0106] In some optional embodiments, in order to enhance the sealing effect, the sealing contact areas of the above-mentioned components may be roughened in advance before being installed. For example, the outer surface of the linear entity 300, the inner wall of the tube body 101 (e.g., the entire inner wall, without damaging the thread), the first fastener 103 (e.g., the entire surface), the second fastener 108 (e.g., the entire surface), etc., are roughened by roughening tools such as sandpaper and grinding wheels to avoid the existence of smooth surfaces.

[0107] In some optional embodiments, in order to enhance the sealing effect, the sealing contact area of ​​the above components may be cleaned before installation. For example, the sealing contact area may be cleaned with a detergent, a cleaning cloth, etc. until there is no dirt; if the cleaning is performed with a detergent, etc., it may be dried by air drying or hot air drying.

[0108] In the previous embodiment, it is mentioned that the first sealing filler 102 / the second sealing filler 107 can be coated with sealant as a lubricant when placed in the corresponding sealing groove. It is understandable that in addition to the first sealing filler 102 and the second sealing filler 107, each compression gasket, fastener, etc. can also be coated with sealant as a lubricant.

[0109] In the above embodiments, the through-cabin sealing device 100 with multiple seals, such as six-way sealing structure, nine-way sealing structure or the multiple seals after reducing the optional sealing structure, can be respectively applied to the application scenarios of manned and unmanned underwater vehicles and well meet the through-cabin sealing requirements of cables / pipes, etc., and can achieve a very reliable sealing effect, so that the cables / pipes are firmly fastened and the sealing effect is leak-proof. As an example, the underwater vehicle is a manned underwater vehicle, and the first sealing filler 102 has more than two arranged along the axial direction; the first sealing filler 102 is implemented as an elastic material, and a compression gasket is provided between adjacent first sealing fillers 102; the first fastener 103 is exposed. Alternatively, the underwater vehicle is an unmanned underwater vehicle, and the through-cabin sealing device includes an eighth sealing structure and a ninth sealing structure covered on the outside of the first fastener 103.

[0110] In summary, the present invention relates to the field of sealing technology, and provides a through-cabin sealing device and an installation method thereof for underwater vehicles, wherein the through-cabin sealing device comprises: a tube body, a tube cavity separating the tube cavity to form a first sealing groove and a second sealing groove; a first sealing structure comprising a first sealing filler filling the gap between the tube body and the linear entity in the first sealing groove; a first fastener pressing the first sealing filler; a second sealing structure comprising a second sealing filler filling the gap between the tube body and the linear entity in the second sealing groove; a second fastener pressing the second sealing filler; a third sealing structure comprising a third sealing filler, holding the second fastener and the linear entity together and sealingly covering the second fastener; a fourth sealing structure comprising a first sealing mold, enclosing the third sealing structure and the outer cabin part of the tube body, and filling the fourth sealing filler. Multiple seals ensure that the linear entity does not move and the seal does not leak during underwater navigation, and the sealing effect is safe and reliable.

[0111] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the protection scope of the present invention.

Claims

1. A tank penetration sealing device, characterized in that: include: The tube body is extended along an axial direction to form a tube cavity for passing the linear entity; wherein the inner wall of the tube cavity forms an annular convex portion to separate the tube cavity to form a first sealing groove and a second sealing groove; the first sealing groove and the second sealing groove are respectively placed inside and outside the cabin; The first sealing structure comprises: at least one first sealing filler, which fills the gap between the tube body and the linear entity in the first sealing groove; a first fastener, which enters the first sealing groove and is used to compress the first sealing filler and has a through hole for the linear entity to pass through; The second sealing structure comprises: at least one second sealing filler, which fills the gap between the tube body and the linear entity in the second sealing groove; a second fastener, which enters the second sealing groove and is used to compress the second sealing filler and has a through hole for the linear entity to pass through; The third sealing structure includes: a third sealing filler, which holds the second fastener and the linear entity tightly and seals and covers the intersection of the second fastener and the linear entity; The fourth sealing structure comprises: a first sealing mold having a first sealing cavity, which seals the third sealing structure and the outer cabin part of the tube body in the first sealing cavity; and a fourth sealing filler, which fills the gap in the first sealing cavity.

2. The penetration sealing device according to claim 1, characterized in that: Also includes at least one of the following structures: 1) A fifth sealing structure, comprising: a fifth sealing filler, filling a gap between the annular convex portion and the linear entity; 2) A sixth sealing structure, comprising: a sixth sealing filler, filling a gap between the through hole of the second fastener and the linear entity; 3) A seventh sealing structure, comprising: a seventh sealing filler, filling a gap between the through hole of the first fastener and the linear entity; 4) An eighth sealing structure, comprising: an eighth sealing filler, which holds the first fastener and the linear entity tightly and seals and covers the intersection of the first fastener and the linear entity; The ninth sealing structure comprises: a second sealing cavity and a second sealing mold for passing a linear entity, which seals the eighth sealing structure and the inner part of the tube body in the second sealing cavity; and a ninth sealing filler, which fills the gap in the second sealing cavity.

3. The penetration sealing device according to claim 1, characterized in that: There are more than two first sealing fillers arranged along the axial direction; the first sealing fillers are implemented as elastic materials, and compression washers are provided between adjacent first sealing fillers; And / or, the first sealing filler is an annular structure with an inclined opening. When more than two first sealing fillers are provided, the inclined openings of adjacent first sealing fillers are staggered by a preset angle. The material of the first sealing filler is implemented as at least one of the following: chloroprene rubber, ethylene propylene rubber, nitrile rubber, polyurethane rubber, and a polymer composite material of any one of them.

4. The tank penetration sealing device according to claim 1, characterized in that: A compression washer is provided between the first sealing filler, the first fastener and the annular protrusion; and / or a compression washer is provided between the second sealing filler, the second fastener and the annular protrusion.

5. The penetration sealing device according to claim 4, characterized in that: The compression washer is implemented as any of the following: 1) The material of the compression washer is one of the following: copper, stainless steel, special engineering plastics; 2) The compression gasket is implemented as a stacked structure of multiple V-shaped sealing rings; the material of the V-shaped sealing ring is one of the following: nitrile rubber, chloroprene rubber, natural rubber, butyl rubber, chlororubber.

6. The penetration sealing device according to claim 2, characterized in that: When the eighth sealing structure and the ninth sealing structure exist, the second sealing filler is implemented as a mixture of 3D fiber braided fabric and sealant.

7. The penetration sealing device according to claim 1, characterized in that: The cabin penetration sealing device is also implemented as at least one of the following structures: 1) There are two or more of the second sealing fillers arranged along the axial direction; 2) The second sealing filler is implemented as a mixture of 3D fiber braid and sealant; 3) The sealing filler in the gap between the through hole of the first fastener and / or the second fastener and the linear entity is formed by a fiber rope mixed with sealant and axially wound around the outer wall of the linear entity; the fiber rope is made of a mixed fiber of one or more materials selected from carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene; 4) The third sealing filler covering the second fastener is formed by fiber ropes mixed with sealant that are alternately wound around the second fastener and the outer wall of the linear entity from opposite sides; and / or the eighth sealing filler covering the intersection of the first fastener and the linear entity is formed by fiber ropes mixed with sealant that are crossed and wound around the first fastener and the outer wall of the linear entity; 5) The first sealing filler and / or the second sealing filler is implemented as an annular structure with an inclined opening which is sleeved outside the linear entity; the inclined openings of adjacent first sealing fillers are staggered by a preset angle, and / or the inclined openings of adjacent second sealing fillers are staggered by a preset angle; 6) The first fastener and the second fastener are threadedly engaged with the notches of the first sealing groove and the second sealing groove respectively; 7) The first sealing mold is a cylindrical body converging toward the outer end; 8) The first sealing mold is a cylindrical body with a tapered outer end; 9) The second sealing packing has a vacuum package with a built-in desiccant indicating the moisture level.

8. A method for installing a penetration sealing device in an underwater vehicle, characterized in that: Applied to the installation of the penetration sealing device according to any one of claims 1 to 7 on an underwater vehicle, the method comprising: S101: The tube body is fixed to the underwater vehicle cabin and a linear entity is passed through the tube cavity, and the first sealing filler and the first fastener are sequentially installed in the first sealing groove to form a first sealing structure; S103: installing the second sealing filler and the second fastener in the second sealing groove in sequence to form a second sealing structure; S105: Using a third sealing filler to hold the second fastener and the linear entity together and seal and cover the intersection of the second fastener and the linear entity; S107: The third sealing structure and the outer portion of the tube body are sealed in the first sealing cavity by a first sealing mold, and a fourth sealing filler is poured into the first sealing cavity from the gap.

9. The installation method of the penetration sealing device according to claim 8 in an underwater vehicle is characterized in that: The underwater vehicle is a manned underwater vehicle, and the first sealing fillers have more than two arranged along the axial direction; the first sealing fillers are implemented as elastic material, and compression washers are provided between adjacent first sealing fillers; the first fastener is exposed; or, the underwater vehicle is an unmanned underwater vehicle, and the cabin penetration sealing device includes an eighth sealing structure and a ninth sealing structure covering the outside of the first fastener.

10. The installation method of the penetration sealing device according to claim 8 in an underwater vehicle is characterized in that: Also includes at least one of the following: 1) Before S103, the method further includes: filling the gap between the annular convex portion and the linear entity with a fifth sealing filler; 2) before installing the second fastener, forming a sixth sealing filler which is sleeved outside the linear entity and has a thickness suitable for the gap between the through hole of the second fastener and the linear entity, so as to fill the gap between the through hole of the second fastener and the linear entity when installing the second fastener; 3) before installing the first fastener, forming a seventh sealing filler sleeved outside the linear entity to fill the gap between the through hole of the first fastener and the linear entity when installing the first fastener; 4) After the first fastener is installed, the first fastener and the linear entity are tightly embraced by an eighth sealing filler to seal and cover the intersection of the first fastener and the linear entity; The third sealing structure and the inner cabin part of the tube body are sealed in the second sealing cavity of the second sealing cavity by a second sealing mold, and a ninth sealing filler is poured into the second sealing cavity from the gap; 5) Install a compression washer before and after installing each first sealing filler; and / or install a compression washer before and after installing the second sealing filler; 6) When installing the first sealing filler and / or the second sealing filler, apply sealant as a lubricant; 7) When using sealant to fill gaps, determine the gaps where the sealant overflows.

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