A tubular object penetration sealing device and penetration sealing method

Abstract

The present invention discloses a tubular penetration sealing device, including a guide, a compression member, an extrusion sealing member, and a sealing base; the guide member can be directly welded or installed on the sealing base through a locking assembly according to construction requirements; the compression member is connected to the end of the guide member, and is provided with a compression cavity communicated with the guide member, and the tubular object passes through the compression cavity; the locking assembly is used to internally compress the guide member; the penetration sealing device of the present invention has few components and strong assembly flexibility; the guide member can be installed on the sealing base by welding or by means of a locking assembly according to different construction environments, and welding installation can be adopted for environments that do not require frequent maintenance or adjustment after assembly, while installation through a locking assembly can provide greater assembly flexibility. The locking assembly can be easily disassembled and replaced as needed, and is suitable for situations that require frequent maintenance or adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of tubular object sealing, and in particular to a tubular object penetration sealing device and a penetration sealing method. Background Art

[0002] With the development of technology, flexible pipes such as cables and conduits are widely used in many fields such as power transmission and distribution, communication networks, transportation, construction and construction equipment, navigation, and marine exploration. In many practical applications, such pipes need to pass through objects such as walls or partitions, and they need to be sealed at the point where they pass through the walls or partitions to ensure that the sealing of the walls or partitions is not destroyed to prevent dust, water, noise, etc. from passing through the walls or partitions.

[0003] Take the field of marine exploration as an example. Marine exploration generally requires going deep into the seabed and usually requires the use of a large number of cables. Deep-sea high pressure is a long-standing technical problem in marine exploration that has been difficult to solve. When a cylindrical cable passes through a partition, due to the irregular diameter, non-rigidity, creep and other characteristics of the cable, ordinary sealing methods cannot guarantee the reliability of the seal. After long-term use, water leakage is prone to occur, and the consequences of circuit short circuits caused by water leakage are difficult to estimate. In mild cases, the working system is paralyzed, and in severe cases, the system and equipment are damaged, and even serious accidents occur. In addition, existing cable sealing devices usually have a single installation method, and it is difficult to choose different installation methods according to different construction environments, resulting in limited application and low adaptability. Furthermore, traditional penetration sealing devices have a complex structure, many operating steps, and are difficult to disassemble, which is not conducive to the maintenance and replacement of internal seals, and has poor assembly flexibility.

[0004] Therefore, it is necessary to develop diversified and flexible sealing devices to meet different needs and challenges in order to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned prior art, one of the objectives of the present invention is to provide a tubular object penetration sealing device.

[0006] A second object of the invention is to provide a sealing method for a tubular object penetrating a sealing device.

[0007] One of the purposes of the present invention is achieved through the following technical solutions:

[0008] A tubular object penetration sealing device, used for surrounding and sealing a tubular object passing through a barrier; comprising:

[0009] A guide member, the guide member is installed on the barrier layer through a sealing base and is used to lead the tubular object out of the barrier layer;

[0010] A pressing member, the pressing member is connected to the end of the guide member and is provided with a pressing cavity communicated with the guide member, and the tubular object passes through the pressing cavity;

[0011] An extrusion seal is arranged in close contact with the compression cavity, and when the compression member presses the extrusion seal in a direction close to the guide member, the extrusion seal can radially compress the tubular object;

[0012] The guide member can be welded and fixed to the sealing base; or installed on the sealing base through a locking assembly; the locking assembly is arranged throughout the sealing base to surround and fix the guide member; the locking assembly includes a first locking member and a second locking member; the first locking member and the second locking member are tightly connected to form a locking cavity, and an anti-slip locking member for clamping the guide member is provided in the locking cavity.

[0013] Furthermore, the extrusion seal is an elastic sealing sleeve with a sealing hole, and a deformation groove is provided along the circumference of the middle outer periphery of the elastic sealing sleeve; when the clamping member presses the extrusion seal in a direction close to the guide member, the elastic sealing sleeve undergoes a diameter reduction deformation through the deformation groove.

[0014] Furthermore, the cross-sectional shape of the deformation groove along the axial direction of the extrusion seal is an isosceles trapezoid.

[0015] Furthermore, the elastic sealing sleeve is made of silicone rubber or polytetrafluoroethylene; and limiting washers are respectively provided between the end of the elastic sealing ring and the pressing member and the guide member.

[0016] Furthermore, the end of the guide member extends into the clamping cavity and is threadedly connected to the clamping member; one end of the elastic sealing sleeve abuts against the bottom of the clamping cavity, and the other end abuts against the end of the guide member; when the clamping member is screwed, the clamping member undergoes axial displacement to squeeze the elastic sealing sleeve.

[0017] Furthermore, the guide member is a guide tube, and the clamping member is a clamping nut.

[0018] Furthermore, the first locking member is provided with an axially extending locking protrusion at one end facing the second locking member, and the second locking member is provided with a limiting recess that is adapted to be plugged into the locking protrusion; the anti-dropping locking member is a hollow elastic tensioning sleeve, and the guide member passes through the locking cavity and the tensioning sleeve at the same time; the first locking member and the second locking member are axially moved until the locking protrusion is plugged into the limiting recess to achieve locking and form the locking cavity, so that the tensioning sleeve is interference-enclosed between the outer wall of the guide member and the inner wall of the locking cavity.

[0019] Furthermore, the first locking member is provided with a plurality of first plug-in strips formed in one piece at intervals in the circumferential direction; the second locking member is provided with a plurality of second plug-in strips axially opposite to the first plug-in strips at intervals in the circumferential direction; a locking hole for installing the locking assembly is provided through the sealing base, and the guide member and the tensioning sleeve are located in the locking hole;

[0020] The two end surfaces of the sealing base are located at the edges of the locking hole and are respectively provided with a plurality of first plug-in holes and second plug-in holes that are compatible with the first plug-in strip and the second plug-in strip; the first plug-in hole and the second plug-in hole are both connected to the locking hole; the length of the second plug-in strip is greater than the length of the first plug-in strip, and the first plug-in strip and the second plug-in strip are respectively inserted into the locking hole from the two end surfaces of the sealing base, and are squeezed and slidably matched with the outer wall of the tensioning sleeve; so that the inner hole diameter of the tensioning sleeve is reduced to achieve locking of the outer wall of the guide member; after the plug-in locking is completed, the end length of the second plug-in strip just exceeds the end of the tensioning sleeve.

[0021] Furthermore, a plurality of corrugated grooves are provided on the inner wall of the tension sleeve. When the inner hole diameter of the tension sleeve is reduced, the corrugated grooves are deformed by pressure and closely adhere to the outer wall of the guide member.

[0022] Furthermore, the end of the second plug-in strip is provided with a first guide slope inclined from the inside to the outside toward the first plug-in strip, and the end of the first plug-in strip is provided with a second guide slope adapted to connect with the first guide slope; the locking protrusion is arranged on the second guide slope; the limiting recess is arranged on the first guide slope; and the end of the tensioning sleeve away from the first locking piece is provided with a third guide slope adapted to the first guide slope.

[0023] Furthermore, the outer wall of the guide member is provided with a circumferentially extending limit step, the outer diameter of the limit step is larger than the hole diameter of the locking hole, and the limit step abuts against the edge of the locking hole; the inner side of the end of the second locking member is provided with a limit slot that is compatible with the limit step, and the limit step is located in the limit slot.

[0024] Furthermore, a gap is provided between two of the first plug-in strips or the second plug-in strips.

[0025] The structure of the locking assembly can also be:

[0026] The first locking member is a locking pressure column, and the second locking member is a locking pressure cover covered on the end of the locking pressure column; the locking cavity is formed between the inner wall of the locking pressure column and the inner surface of the locking pressure cover; the anti-dropping locking member is a plurality of squeezing balls movably arranged around the circumference of the guide member, and an axially movable sliding column is provided in the locking cavity, and the sliding column moves along the inner wall of the locking pressure column and drives the squeezing balls to radially approach the guide member to press it or move away to loosen it.

[0027] Furthermore, the inner wall of the slide column is axially provided with a step-shaped integrally formed clamping portion and a loosening portion; the distance between the loosening portion and the outer wall of the guide member is greater than the distance between the clamping portion and the outer wall of the guide member; a plurality of clamping strips extending axially are provided at the top of one end of the inner side of the locking pressure column away from the locking gland, and a plurality of the extrusion balls are respectively clamped and limited by the clamping strips and supported by the step portion between the clamping portion and the loosening portion;

[0028] When the slide column moves toward the inner top of the locking pressure column, the squeezing ball is gradually squeezed and moved to between the surface of the pressing portion and the outer wall of the guide member to clamp the outer wall of the guide member.

[0029] Furthermore, an arc transition surface is provided between the pressing portion and the loosening portion.

[0030] Furthermore, the locking pressure cover is provided with a compression spring for pushing the slide column to move in the direction of the locking pressure column, one end of the compression spring is fixed to the locking pressure cover, and the other end is fixed to the slide column; so that the extrusion ball is gradually squeezed and moved to between the surface of the pressing part and the outer wall of the guide member under the friction and sliding with the pressing part, thereby clamping the outer wall of the guide member.

[0031] Furthermore, a plurality of axially extending limiting convex strips are spaced apart on the outer wall of the sliding column, and a limiting sliding groove matched with the limiting convex strip is provided on the inner wall of the locking pressure column. When the sliding column moves, the limiting convex strip can slide in the limiting sliding groove.

[0032] Furthermore, the squeezing ball is an elastic squeezing ball.

[0033] The second object of the present invention can be achieved by the following technical solution, comprising the following steps:

[0034] S1: embed the sealing base into the interlayer, and then weld the guide piece through the sealing base; or after the welding of the guide piece is completed, embed the sealing base and the guide piece into the interlayer as a whole;

[0035] S2: insert the tubular object into the guide member, pre-install the extrusion seal into the compression cavity of the compression member, and install it together to the end of the guide member to complete the sealing.

[0036] The second object of the present invention can also be achieved by the following technical solution, comprising the following steps:

[0037] S1: embed the sealing base into the interlayer, then place the tension sleeve into the sealing base, and insert the guide member;

[0038] S2: inserting the first locking member and the second locking member into the sealing base respectively, and tightly connecting them to form a locking cavity surrounding the guide member, so that the anti-dropping locking member is located in the locking cavity; inserting the tubular object into the guide member;

[0039] S3: pre-install the extrusion seal into the compression cavity of the compression member, and install it together with the end of the guide member to complete the sealing.

[0040] The second object of the present invention can also be achieved by the following technical solution, comprising the following steps:

[0041] S1: embed the sealing base into the partition, then assemble the locking pressure column, the squeezing ball and the sliding column into the sealing base, and insert the guide piece;

[0042] S2: driving the slide column to move toward the inner top of the locking pressure column, and the squeezing ball is gradually squeezed and moved to between the surface of the pressing part and the outer wall of the guide member, clamping the outer wall of the guide member, and completing the locking of the guide member;

[0043] S3: pre-install the extrusion seal into the compression cavity of the compression member, and install it together with the end of the guide member to complete the sealing.

[0044] Compared with the prior art, the present invention has at least the following beneficial effects:

[0045] 1. The penetration sealing device of the present invention has few parts and strong assembly flexibility; the guide piece can be installed on the sealing base by welding or locking assembly according to different construction environments. Welding installation can be adopted for environments that do not require frequent maintenance or adjustment after assembly, while installation by locking assembly can provide greater assembly flexibility. The locking assembly can be easily disassembled and replaced as needed, which is suitable for situations where frequent maintenance or adjustment is required.

[0046] 2. The present invention provides a threaded clamping piece at the end of a guide piece for leading out tubular objects such as cables, and provides an elastic sealing sleeve in a clamping cavity formed inside the clamping piece. After being led out from the guide piece, the tubular objects such as cables simultaneously pass through the sealing hole and the clamping cavity of the elastic sealing sleeve, and a circumferential deformation groove is provided on the outer periphery of the middle part of the elastic sealing sleeve. The advantage of such a configuration is that when the clamping piece is screwed to press the elastic sealing sleeve in a direction close to the guide piece, due to the presence of the deformation groove, the pressure on both ends of the elastic sealing sleeve is directed toward the bottom of the deformation groove, that is, the middle part of the elastic sealing sleeve is deformed by the deformation groove, resulting in a reduction in the aperture of the sealing hole, thereby forming a tensioning force on the cable in the sealing hole to achieve a stronger sealing and locking effect. It is more suitable for sealing requirements under underwater high-pressure environments, greatly improves the sealing performance, and has a simple and reliable structure.

[0047] 3. The design of the locking assembly of the present invention also improves the overall stability of the guide member, further ensures the fixation of the cable in the guide member, and is easy to operate, thereby improving assembly operability and assembly efficiency;

[0048] Specifically, in one embodiment, the present invention provides a first locking member, a second locking member and a tensioning sleeve, places the tensioning sleeve in the locking hole of the sealing base, inserts the guide member into the inner hole of the tensioning sleeve, and then inserts the first locking member and the second locking member into the locking hole from both end surfaces of the sealing base to complete the snap-fit ​​assembly and form a locking cavity. During the plug-in process, an extrusion and sliding fit is generated on the outer wall of the elastic tensioning sleeve. After the assembly is completed, the tensioning sleeve is interference-enclosed between the outer wall of the guide member and the inner wall of the locking cavity, thereby clamping the outer wall of the guide member, and the inner diameter of the tensioning sleeve is compressed, thereby realizing the locking and fixing of the guide member.

[0049] Furthermore, the first locking member and the second locking member are respectively provided with a first plug-in strip and a second plug-in strip, and the two end surfaces of the sealing base are located at the edge of the locking hole and are further provided with a first plug-in hole and a second plug-in hole that are connected and matched with the first plug-in strip and the second plug-in strip; the advantages of such a design are: on the one hand, when the first plug-in strip and the second plug-in strip enter from the corresponding plug-in holes, they can smoothly contact and squeeze the outer wall of the tensioning sleeve, so that its inner diameter is reduced and the guide member is locked; on the other hand, the edge of the locking hole can also guide and limit the first locking member and the second locking member, so as to facilitate the judgment of the tight assembly effect and improve the assembly stability;

[0050] In addition, the design of the limiting step and the limiting slot is used to achieve limiting fixation. On the one hand, it can limit the guide member from sliding out when fixed. More importantly, on the other hand, when disassembling, the guide member can be pulled out by hand and the second locking member can be brought out, so that the first locking member and the second locking member can be separated more quickly without the need for additional auxiliary tools. The design is simple and ingenious.

[0051] In another embodiment, the structure of the locking assembly can also be a locking pressure column and a locking pressure cover, and the anti-slip locking member can be a squeezing ball that moves and squeezes the outer wall of the clamping guide member, and is designed to move axially in the locking pressure column to make the squeezing ball approach or move away from the outer wall of the guide member. When pressure is applied to the sliding column to drive it to move, the squeezing ball is gradually squeezed and moved to between the surface of the squeezing part and the outer wall of the guide member under the friction and sliding with the squeezing part, clamping the outer wall of the guide member, and similarly utilizing the elastic squeezing ball to squeeze the outer wall of the guide member to achieve the locking function. Both embodiments can produce a good locking effect through the cooperation between the structures, and better match the locking effect of the squeezing part, the elastic sealing sleeve, etc. at the end of the guide member on the cable.

[0052] 4. When tubular objects such as cables are located at the penetration point of the partition, the present invention utilizes the structural design of the sealing base, the locking assembly, and the clamping parts to perform a multi-level combined sealing structure from the inside to the outside, so that the parts of the guide located inside and outside the sealing base can play a good role in locking the cable, so that the penetration device of the present invention has extremely high pressure resistance and improves the cable sealing reliability; at the same time, the structural design of the combined assembled locking assembly and the parts with clamping function are simple and reliable, and the assembly is simple and efficient, which is more conducive to realizing combined and disassembled maintenance, thereby reducing maintenance costs.

[0053] 5. The penetration sealing method of the present invention is easy to operate, has high sealing and disassembly efficiency, meets the on-site sealing and maintenance and relocation requirements of cable penetration, has strong operability, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a schematic cross-sectional view of a local structure of a tubular object penetration sealing device according to Example 1 of the present invention;

[0055] Figure 2 This is a partial structural exploded schematic diagram of the tubular object penetration sealing device of Example 1 of the present invention, omitting the sealing base;

[0056] Figure 3 This is a schematic cross-sectional diagram of the partial structure of the tubular penetration sealing device omitting the sealing base in Example 1 of the present invention.

[0057] Figure 4 This is a schematic diagram of the overall structure of a tubular object penetration sealing device according to Example 2 of the present invention;

[0058] Figure 5 for Figure 4 Schematic diagram of the vertical section structure;

[0059] Figure 6 This is a schematic diagram of the assembly state of the local structure of the tubular object penetration sealing device of Example 2 of the present invention after omitting the sealing base;

[0060] Figure 7 for Figure 6 Schematic diagram of the vertical section structure;

[0061] Figure 8 This is a partial structural exploded schematic diagram of the tubular object penetration sealing device of Example 2 of the present invention, omitting the sealing base and the locking assembly;

[0062] Fig. 9 It is a partial structural exploded schematic diagram of the locking assembly of the tubular object penetration sealing device according to embodiment 2 of the present invention;

[0063] Fig.10 Schematic diagram of different installation states of the sealing base of the tubular object penetration sealing device according to Example 2 of the present invention;

[0064] Fig.11 This is a partial structural schematic diagram of the tubular object penetration sealing device of Example 3 of the present invention, omitting the sealing base;

[0065] Fig.12 This is a partial structural diagram of the tubular object penetration sealing device of Example 3 of the present invention, omitting the sealing base and the locking assembly;

[0066] Fig.13 This is a schematic diagram of the partial structure of the locking assembly of the tubular object penetration sealing device of Example 3 of the present invention;

[0067] Fig.14 This is a schematic diagram of the state of the tubular object penetration sealing device in Example 3 of the present invention before the guide piece is locked;

[0068] Fig.15 This is a schematic diagram of the state of the tubular object penetration sealing device after locking the guide member in Example 3 of the present invention;

[0069] Fig.16 This is a schematic diagram of the assembly state of the locking pressure column and the squeezing ball of the tubular penetration sealing device in Example 3 of the present invention.

[0070] In the figure:

[0071] 1. Guide piece; 11. Limiting step;

[0072] 2. Sealing base; 21. Locking hole; 22. First plug hole; 23. Second plug hole;

[0073] 3. Compression piece; 31. Compression chamber;

[0074] 4. Extrusion seal; 41. Sealing hole; 42. Deformation groove;

[0075] 5. Locking assembly; 51. First locking member; 511. Locking protrusion; 512. First plug strip; 5121. Second guiding inclined surface; 513. Position limiting slide groove; 52. Second locking member; 521. Position limiting recess; 522. Second plug strip; 5221. First guiding inclined surface; 523. Position limiting slot; 53. Locking cavity; 54. Anti-drop locking member; 541. Third guiding inclined surface; 542. Corrugated groove; 55. Sliding column; 551. Pressing part; 552. Loose part; 553. Arc transition surface; 554. Position limiting protrusion; 56. Clamping strip; 57. Compression spring;

[0076] 6. Limit washer. DETAILED DESCRIPTION

[0077] In order to facilitate the understanding of the present invention, the technical solutions and advantages of the invention are further described in detail below in conjunction with the accompanying drawings and embodiments. The mechanisms or methods not described in the present invention can refer to the prior art. The specific structure and characteristics of the present invention are described below by way of example, which should not constitute any limitation to the present invention. At the same time, any of the technical features mentioned below (including implicit or disclosed), as well as any technical features directly displayed or implied in the figure, can continue to be arbitrarily combined or deleted between these technical features, so as to form more other embodiments that may not be directly or indirectly mentioned in the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0078] It should be noted that the construction and arrangement of the present invention shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, structure, shape, and proportion of various elements, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments.

[0079] Example 1

[0080] like Figure 1-3 As shown, this embodiment 1 provides a tubular object penetration sealing device, which is used to surround and seal a tubular object passing through a barrier layer; in this embodiment, the tubular object includes but is not limited to penetration objects such as cables, pipes, and conduits, and the sealing base is a cylindrical base; the present invention takes deep-sea cable penetration sealing as an example to specifically introduce the penetration sealing device, and the penetration sealing device includes:

[0081] A guide member 1, the guide member 1 is installed on the barrier through a sealing base 2, and is used to lead the tubular object out of the barrier; in this embodiment, the guide member passes through between the two end surfaces of the sealing base 2, and the cable passes through the inner hole of the guide member and is led out of the sealing base; the guide member can be installed on the sealing base through a locking assembly;

[0082] A pressing member 3, the pressing member 3 is connected to the end of the guide member 1 and is provided with a pressing cavity 31 communicating with the guide member 1, and the tubular object passes through the pressing cavity 31;

[0083] An extrusion seal 4 is disposed in close contact with the compression cavity. When the compression member 3 presses the extrusion seal 4 toward the direction close to the guide member 1, the extrusion seal 4 can radially compress the tubular object;

[0084] Specifically, the end of the guide member 1 extends into the compression cavity and is threadedly connected to the compression member 3; one end of the elastic sealing sleeve abuts against the bottom of the compression cavity, and the other end abuts against the end of the guide member 1; when the compression member 3 is screwed, the compression member 3 is axially displaced to squeeze the elastic sealing sleeve. In this embodiment, the guide member 1 is a guide tube, and the compression member 3 is a compression nut.

[0085] Furthermore, the extrusion seal 4 is an elastic sealing sleeve with a sealing hole 41, and a deformation groove 42 is provided on the outer periphery of the middle part of the elastic sealing sleeve along its circumference; when the pressing member 3 presses the elastic sealing sleeve 4 in the direction close to the guide member 1, the elastic sealing sleeve undergoes a diameter reduction deformation through the deformation groove 42, thereby pressing the cable in its sealing hole. The deformation groove is provided so that the middle part of the elastic sealing sleeve has a small diameter and a large deformation amount. When the clamped cable moves axially or radially, the small diameter part can follow the cable to undergo multi-directional deformation, thereby always maintaining a tight clamping of the cable.

[0086] To further refine, in order to improve the cable compression effect, the cross-sectional shape of the deformation groove 42 along the axial direction of the extrusion seal 4 is an isosceles trapezoid. The deformation groove is located in the middle of the elastic sealing sleeve, so that the middle part can receive the pressure from both ends more evenly, and the shrinking deformation effect is better. In this embodiment, the material for preparing the elastic sealing sleeve is an elastic material including but not limited to silicone rubber or polytetrafluoroethylene. In order to improve the stability of the compression of the elastic sealing sleeve, a limiting gasket 6 is respectively provided between the end of the elastic sealing ring and the pressing member 3 and the guide member 1.

[0087] In this embodiment, a threaded clamping piece is provided at the end of a guide piece for leading out a cable or other tubular object, and an elastic sealing sleeve is provided in a clamping cavity formed inside the clamping piece. After the cable or other tubular object is led out from the guide piece, it passes through the sealing hole and the clamping cavity of the elastic sealing sleeve at the same time, and a circumferential deformation groove is provided on the outer periphery of the middle part of the elastic sealing sleeve. The advantage of such a setting is that when the clamping piece is screwed to press the elastic sealing sleeve in the direction close to the guide piece, due to the presence of the deformation groove, the pressure on both ends of the elastic sealing sleeve is directed toward the bottom of the deformation groove, that is, the middle part of the elastic sealing sleeve is deformed by the deformation groove, resulting in a reduction in the aperture of the sealing hole, thereby forming a tensioning force on the cable in the sealing hole to achieve a stronger sealing and locking effect. It is more suitable for sealing requirements under underwater high-pressure environments, greatly improves the sealing performance, and has a simple and reliable structure.

[0088] like Figure 1 As shown, usually, the sealing base is embedded in the interlayer. In the deep sea high-pressure environment, seawater will exert pressure on the sealing base from both end surfaces of the sealing base, that is, the pressurized seawater will further press the clamping nut, thereby preventing the nut from loosening and compressing the extruded seal to ensure a good sealing effect.

[0089] In this embodiment, the guide member can be installed on the sealing base by welding, and the specific welding operation, required conditions, parameters and equipment can be operated as needed according to the environment;

[0090] The sealing method of the penetration sealing device of this embodiment 1 comprises the following steps:

[0091] S1: embed the sealing base into the interlayer, and then weld the guide piece through the sealing base; or after the welding of the guide piece is completed, embed the sealing base and the guide piece into the interlayer as a whole;

[0092] S2: insert the tubular object into the guide member, pre-install the extrusion seal into the compression cavity of the compression member, and install it together to the end of the guide member to complete the sealing.

[0093] The penetration sealing device of the present invention has few components and strong assembly flexibility; the guide member can be installed on the sealing base by welding or locking assembly according to different construction environments. Welding installation can be adopted for environments that do not require frequent maintenance or adjustment after assembly, while installation by locking assembly can provide greater assembly flexibility. The locking assembly can be easily disassembled and replaced as needed, which is suitable for situations where frequent maintenance or adjustment is required.

[0094] Example 2

[0095] like Figure 4-10As shown, the difference between this embodiment 2 and embodiment 1 is that the guide member is installed on the sealing base through the locking assembly 5; the design of the locking assembly 5 of this embodiment 2 also improves the overall stability of the guide member, further ensures the fixation of the cable in the guide member, and is easy to operate, thereby improving the assembly operability and efficiency; specifically, the locking assembly 5 is arranged throughout the sealing base 2 to surround and fix the guide member 1; the locking assembly 5 includes a first locking member 51 and a second locking member 52; the first locking member 51 and the second locking member 52 are tightly connected to form a locking cavity 53, and the locking cavity 53 is provided with an anti-slip locking member 54 for clamping the guide member 1.

[0096] When a tubular object such as a cable is located at a barrier penetration, the present invention utilizes the structural design of a sealing base, a locking assembly, and a clamping component to perform a multi-level combined sealing structure from the inside to the outside, so that the guide member located inside and outside the sealing base can play a good role in locking the cable, so that the penetration device of the present invention has an extremely high pressure resistance and improves the cable sealing reliability; at the same time, the structural design of the combined assembled locking assembly and the components with clamping function are simple and reliable, and the assembly is simple and efficient, which is more conducive to realizing combination and disassembly maintenance, thereby reducing maintenance costs.

[0097] To further illustrate the structure of the locking assembly 5, the first locking member 51 is provided with an axially extending locking protrusion 511 at one end facing the second locking member 52, and the second locking member 52 is provided with a limiting recess 521 that is adapted to be plugged into the locking protrusion 511; the locking protrusion 511 and the limiting recess 521 are interference-fitted and plug-in connected; the anti-slip locking member 54 is a hollow elastic tensioning sleeve, and the guide member 1 simultaneously passes through the locking cavity 53 and the tensioning sleeve; the first locking member 51 and the second locking member 52 are axially moved until the locking protrusion 511 is plugged into the limiting recess 521 to achieve locking and form the locking cavity 53, so that the tensioning sleeve is interference-fitted and arranged between the outer wall of the guide member 1 and the inner wall of the locking cavity 53. In this embodiment, the first locking member and the second locking member can be columnar structures of different lengths, and the two are tightly connected to form a locking cavity that is also a columnar hollow, and the anti-dropping locking member is also a columnar structure, so that the radial extrusion of the outer wall of the tension sleeve can be completed while the first locking member and the second locking member are axially moved and assembled, so that they can be interference-fitted with the inner side of the first locking member and the second locking member after being connected, and the guide member located in the inner hole of the tension sleeve is compressed by shrinking the diameter. In an optional embodiment, the locking protrusion can be a protrusion structure with a snap-on effect, and the limiting recess can be a limiting block with a locking protrusion that prevents the inserted locking protrusion from loosening backwards. There is no specific limitation, as long as it can achieve stable assembly of the first locking member and the second locking member.

[0098] Preferably, the first locking member 51 is provided with a plurality of first plug strips 512 formed integrally therewith at intervals in the circumferential direction; the second locking member 52 is provided with second plug strips 522 axially opposite to the first plug strips 512 at intervals in the circumferential direction; a locking hole 21 for installing the locking assembly 5 is provided through the sealing base 2, and the guide member 1 and the tensioning sleeve are located in the locking hole 21;

[0099] A notch is provided on the side between the two first plug strips 512 or the two second plug strips 522, so that the ends of the first plug strips 512 and the second plug strips 522 are non-enclosed structures; the two end surfaces of the sealing base 2 are located at the edges of the locking hole 21 and are respectively provided with a plurality of first plug holes 22 and second plug holes 23 that are compatible with the first plug strips 512 and the second plug strips 522; the first plug holes 22 and the second plug holes 23 are both connected to the locking hole 21; the first plug holes 22 and the second plug holes 23 are ... The length of the second plug-in strip 522 is greater than that of the first plug-in strip 512. The first plug-in strip 512 and the second plug-in strip 522 are respectively inserted into the locking hole 21 from the first plug-in hole 22 and the second plug-in hole 23 on the two end surfaces of the sealing base 2, and are squeezed and slidably matched with the outer wall of the tensioning sleeve; so that the inner hole diameter of the tensioning sleeve is reduced to lock the outer wall of the guide member 1; after the plug-in locking is completed, the end length of the second plug-in strip 522 just exceeds the end of the tensioning sleeve. In this embodiment, an annular groove is provided at the place where the tension sleeve exerts pressure on the outer wall of the guide member, and the tension sleeve is sleeved on the annular groove. After the first locking member and the second locking member are assembled, the tension sleeve is centrally arranged with axial gaps at both ends; the end length of the second plug-in strip just does not exceed the end of the tension sleeve, which means that the end of the tension sleeve close to the first locking sleeve is roughly flush with the first guide slope of the second plug-in strip. The reason for this arrangement is that during the process of the tension sleeve being plugged and squeezed by the second locking member, the end close to the first locking member will swell, and the second locking member inserted into the locking hole just completely covers the tension sleeve, which facilitates the insertion of the first locking member, avoids the problem of excessive swelling caused by the excessive length of the part where the first locking member and the tension sleeve are pushed and contacted, and improves the assembly effect.

[0100] Preferably, the inner wall of the tension sleeve is provided with a plurality of corrugated grooves 542. When the inner hole diameter of the tension sleeve is reduced, the corrugated grooves 542 are deformed under pressure and closely attached to the outer wall of the guide member 1. Under the deformation effect, the corrugated grooves 542 "grasp" the outer wall of the guide member. At the same time, the plurality of corrugated grooves can increase the friction force on the tube wall of the guide member, thereby improving the locking effect. In this embodiment, the outer wall of the guide member can be concavely provided with a circumferential mounting groove for mounting the tension sleeve (not shown in the drawings), further improving the assembly stability of the tension sleeve.

[0101] In order to further improve the assembly efficiency of the first locking member and the second locking member, preferably, the end of the second plug strip 522 is provided with a first guiding slope 5221 inclined from the inside to the outside toward the first plug strip 512, and the end of the first plug strip 512 is provided with a second guiding slope 5121 adapted to the first guiding slope 5221; the locking protrusion 511 is arranged on the second guiding slope 5121; the limiting recess 521 is arranged on the first guiding slope 5221; the end of the tension sleeve away from the first locking member 51 is provided with a third guiding slope 541 adapted to the first guiding slope 5221; the plane where the first guiding slope 5221 is located forms an angle of 15-25° with the plane where the outer wall of the first plug strip 512 is located. This angle cooperates with the structure of the two guiding slopes, so that the first plug strip of the first locking member is easier to be inserted into the end of the second plug strip, and due to the extrusion deformation, the radial force of the two is increased, and the assembly is more stable.

[0102] Preferably, the outer wall of the guide member 1 is provided with a circumferentially extending limiting step 11, the outer diameter of the limiting step 11 is larger than the aperture of the locking hole 21, and the limiting step abuts against the edge of the locking hole 21; the inner side of the end of the second locking member 52 is provided with a limiting slot 523 adapted to the limiting step 11, and the limiting step 11 is located in the limiting slot 523. In this embodiment, the design of the limiting step and the limiting slot is to achieve limiting fixation. On the one hand, the guide member can be limited from sliding out when fixed. More importantly, on the other hand, when disassembling, the guide member can be pulled out by hand to bring out the second locking member, so that the first locking member and the second locking member can be separated more quickly without the need for additional auxiliary tools. The design is simple and ingenious.

[0103] The sealing method of the penetration sealing device of the present embodiment 2 comprises the following steps:

[0104] S1: embed the sealing base into the partition, then place the tension sleeve into the sealing base 2, and insert the guide member 1;

[0105] S2: insert the first locking member 51 and the second locking member 52 into the sealing base 2 respectively, and connect them tightly to form a locking cavity 53 surrounding the guide member 1, so that the anti-dropping locking member 54 is located in the locking cavity 53; insert the tubular object into the guide member 1;

[0106] S3: pre-install the extrusion seal 4 into the compression cavity of the compression member 3, and install it together with the end of the guide member 1 to complete the sealing.

[0107] The penetration sealing method of the present invention is easy to operate. In the above-mentioned sealing process, the sealing base can be embedded in the interlayer by the fixing method of the existing technology, and it is installed in the locking hole through the deformation effect of the tensioning sleeve, and its two ends are respectively abutted on the inner edge of the locking hole, and then the guide piece is inserted. Then, the first locking piece and the second locking piece can be respectively inserted from the two end surfaces of the sealing base to achieve snap-fit. The sealing method has strong operability and is easy to promote.

[0108] Example 3

[0109] like Figure 11-16 As shown, the difference between this embodiment 3 and embodiment 2 lies in the structure of the locking assembly 5 and the locking and sealing method, which are as follows:

[0110] The first locking member 51 is a locking pressure column, and the second locking member 52 is a locking pressure cover covered at the end of the locking pressure column; the locking pressure cover can be a flat cylindrical cover plate covered at the end of the locking pressure column; the locking pressure column and the locking pressure cover can be stably assembled by snapping, welding, etc., which are not limited here; the locking cavity 53 is formed between the inner wall of the locking pressure column and the inner surface of the locking pressure cover; the anti-slip locking member 54 is a plurality of extrusion balls movably arranged around the guide member 1, and the extrusion balls are elastic extrusion balls that can undergo slight deformation; an axially movable sliding column 55 is provided in the locking cavity 53, and the sliding column 55 moves along the inner wall of the locking pressure column, and drives the extrusion ball to radially approach and compress the guide member 1 or to move away and loosen it.

[0111] Preferably, the inner wall of the slide column 55 is axially provided with a step-shaped integrally formed pressing portion 551 and a releasing portion 552; the distance between the releasing portion 552 and the outer wall of the guide member 1 is greater than the distance between the pressing portion 551 and the outer wall of the guide member 1; an arc transition surface 553 is provided between the pressing portion 551 and the releasing portion 552; a plurality of axially extending clamping strips 56 are provided at the top of one end of the inner side of the locking pressure column away from the locking gland, and a plurality of the extrusion balls are clamped and limited by the clamping strips 56 respectively, and supported by the step portion between the pressing portion 551 and the releasing portion 552;

[0112] When the slide column 55 moves toward the inner top of the locking pressure column, the squeezing ball is gradually squeezed and moved to between the surface of the pressing portion 551 and the outer wall of the guide member 1 to clamp the outer wall of the guide member 1 .

[0113] In this embodiment, there is no specific restriction on the material used to prepare the squeezing ball. Due to its elastic deformation effect, the clamping strip can be used to ensure that the squeezing ball does not fall while being able to move. The structural design of the locking part and the loosening part of the sliding column and the arc transition surface therebetween is just right (the curvature of the arc transition surface is not specifically limited either), so that before the sliding column is slid and locked, the squeezing ball can gradually roll through the arc transition surface and the support at the step. When power is applied to the sliding column to drive it to move, the squeezing ball is gradually squeezed and moved to between the surface of the pressing part and the outer wall of the guide member under the friction and sliding with the pressing part, and is interference fit with the outer wall of the guide member and the surface of the pressing part to clamp the outer wall of the guide member. The locking function is also achieved by squeezing the outer wall of the guide member by the elastic squeezing ball.

[0114] The locking cover is provided with a compression spring 57 for pushing the slide post 55 to move in the direction of the locking cover, one end of the compression spring 57 is fixed to the locking cover, and the other end is fixed to the slide post 55; under the reset tension of the compression spring 57, the slide post always keeps moving in the direction of the locking cover, so that the extrusion ball is gradually squeezed and moved to between the surface of the pressing part and the outer wall of the guide member under the friction and sliding with the pressing part, thereby clamping the outer wall of the guide member.

[0115] When it is necessary to move the slide column toward the locking cover so that the extrusion ball loosens and moves away from the guide member, this can be achieved by a power mechanism in the prior art that can achieve linear reciprocating motion, or by providing an air vent (not marked in the accompanying drawings) on the locking cover to ventilate in the direction of the locking cover to generate air pressure to push the slide column toward the locking cover. No specific limitation is made here, as long as it can achieve the beneficial effect of moving the slide column.

[0116] Preferably, the outer wall of the slide column 55 is provided with a plurality of axially extending limiting convex strips 554 at intervals, and the inner wall of the locking pressure column is provided with limiting sliding grooves 513 adapted to the limiting convex strips 554, and when the slide column 55 moves, the limiting convex strips 554 can slide in the limiting sliding grooves 513. This arrangement can prevent the slide column from rotating and shifting in the circumferential direction during use.

[0117] The sealing method of the penetration sealing device of this embodiment 3 comprises the following steps:

[0118] S1: embed the sealing base into the partition, then assemble the locking pressure column, the squeezing ball and the sliding column 55 into the sealing base 2, and insert the guide member 1;

[0119] S2: driving the slide column 55 to move toward the inner top of the locking pressure column, and the squeezing ball is gradually squeezed and moved to between the surface of the pressing portion 551 and the outer wall of the guide member 1, clamping the outer wall of the guide member 1, and completing the locking of the guide member 1;

[0120] S3: pre-install the extrusion seal 4 into the compression cavity of the compression member 3, and install it together with the end of the guide member 1 to complete the sealing.

[0121] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. For ordinary technicians in this field, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tubular object penetration sealing device, used to surround and seal a tubular object passing through a barrier; characterized in that: include: A guide member, the guide member is installed on the barrier layer through a sealing base and is used to lead the tubular object out of the barrier layer; A pressing member, the pressing member is connected to the end of the guide member and is provided with a pressing cavity communicated with the guide member, and the tubular object passes through the pressing cavity; An extrusion seal is arranged in close contact with the compression cavity, and when the compression member presses the extrusion seal in a direction close to the guide member, the extrusion seal can radially compress the tubular object; The guide member can be welded and fixed to the sealing base; or installed on the sealing base through a locking assembly; the locking assembly is arranged on the sealing base to surround and fix the guide member; the locking assembly includes a first locking member and a second locking member; the first locking member and the second locking member are tightly connected to form a locking cavity, and an anti-dropping locking member for clamping the guide member is arranged in the locking cavity; The first locking piece is provided with an axially extending locking protrusion at one end facing the second locking piece, and the second locking piece is provided with a limiting recess that is adapted to be plugged with the locking protrusion; the anti-dropping locking piece is a hollow elastic tensioning sleeve, and the guide piece passes through the locking cavity and the tensioning sleeve at the same time; the first locking piece and the second locking piece are axially moved until the locking protrusion is plugged into the limiting recess to achieve locking and form the locking cavity, so that the tensioning sleeve is interference-enclosed between the outer wall of the guide piece and the inner wall of the locking cavity; the first locking piece is circumferentially spaced with a plurality of integrally formed first plug-in strips; the second locking piece is circumferentially spaced with second plug-in strips axially opposite to the first plug-in strip; a locking hole for installing the locking assembly is penetrated through the sealing base, and the guide piece and the tensioning sleeve are located in the locking hole; The edges of the locking hole at both end surfaces of the sealing base are respectively provided with a plurality of first plug-in holes and second plug-in holes that are compatible with the first plug-in strip and the second plug-in strip; the first plug-in holes and the second plug-in holes are both connected to the locking hole; the first plug-in strip and the second plug-in strip are respectively inserted into the locking hole from the two end surfaces of the sealing base, and are squeezed and slidably matched with the outer wall of the tensioning sleeve; so that the inner hole diameter of the tensioning sleeve is reduced, thereby locking the outer wall of the guide member.

2. The tubular penetration sealing device according to claim 1, characterized in that: The length of the second plug-in strip is greater than that of the first plug-in strip. After the plug-in and locking are completed, the length of the end of the second plug-in strip just covers the end of the tensioning sleeve.

3. The tubular penetration sealing device according to claim 2, characterized in that: The end of the second plug-in strip is provided with a first guide slope inclined from the inside to the outside toward the first plug-in strip, and the end of the first plug-in strip is provided with a second guide slope adapted to connect with the first guide slope; the locking protrusion is arranged on the second guide slope; the limiting recess is arranged on the first guide slope; the end of the tensioning sleeve away from the first locking piece is provided with a third guide slope adapted to the first guide slope.

4. The tubular object penetration sealing device according to claim 3, characterized in that: The outer wall of the guide member is provided with a circumferentially extending limit step, the outer diameter of the limit step is larger than the hole diameter of the locking hole, and the limit step abuts against the edge of the locking hole; the inner side of the end of the second locking member is provided with a limit slot matched with the limit step, and the limit step is located in the limit slot.

5. A sealing method for a tubular object penetration sealing device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: embed the sealing base into the interlayer, then place the tension sleeve into the sealing base, and insert the guide member; S2: inserting the first locking member and the second locking member into the sealing base respectively, and tightly connecting them to form a locking cavity surrounding the guide member, so that the anti-dropping locking member is located in the locking cavity; inserting a tubular object into the guide member; S3: pre-install the extrusion seal into the compression cavity of the compression member, and install it together with the end of the guide member to complete the sealing.

6. A tubular object penetration sealing device, used to surround and seal a tubular object passing through a barrier; characterized in that: include: A guide member, the guide member is installed on the barrier layer through a sealing base and is used to lead the tubular object out of the barrier layer; A pressing member, the pressing member is connected to the end of the guide member and is provided with a pressing cavity communicated with the guide member, and the tubular object passes through the pressing cavity; An extrusion seal is arranged in close contact with the compression cavity, and when the compression member presses the extrusion seal in a direction close to the guide member, the extrusion seal can radially compress the tubular object; The guide member can be welded and fixed to the sealing base; or be installed on the sealing base through a locking assembly; the locking assembly is arranged on the sealing base to surround and fix the guide member; the locking assembly comprises a first locking member and a second locking member; the first locking member and the second locking member are tightly connected to form a locking cavity, and an anti-slip locking member for clamping the guide member is provided in the locking cavity; the first locking member is a locking pressure column, and the second locking member is a locking pressure cover arranged at the end of the locking pressure column; the locking cavity is formed between the inner wall of the locking pressure column and the inner surface of the locking pressure cover; the anti-slip locking member is a plurality of extrusion balls movably arranged around the circumference of the guide member, and an axially movable sliding column is provided in the locking cavity, the sliding column moves along the inner wall of the locking pressure column, and drives the extrusion ball to radially approach and compress the guide member or move away to release.

7. The tubular penetration sealing device according to claim 1 or 6, characterized in that: The end of the guide piece extends into the clamping cavity and is threadedly connected to the clamping piece; the extrusion seal is an elastic sealing sleeve with a sealing hole, and the middle outer periphery of the elastic sealing sleeve is provided with a deformation groove along its circumference; one end of the elastic sealing sleeve abuts against the bottom of the clamping cavity, and the other end abuts against the end of the guide piece; when the clamping piece is screwed, the clamping piece undergoes axial displacement, squeezing the elastic sealing sleeve, and the elastic sealing sleeve undergoes a diameter reduction deformation through the deformation groove.

8. The tubular penetration sealing device according to claim 6, characterized in that: The inner wall of the slide column is axially provided with a pressing part and a loosening part integrally formed in a stepped shape; the distance between the loosening part and the outer wall of the guide member is greater than the distance between the pressing part and the outer wall of the guide member; a plurality of clamping strips extending axially are provided at the top of one end of the inner side of the locking pressure column away from the locking gland, and a plurality of the extrusion balls are respectively clamped and limited by the clamping strips and supported by the step portion between the pressing part and the loosening part; When the slide column moves toward the inner top of the locking pressure column, the squeezing ball is gradually squeezed and moved to between the surface of the pressing portion and the outer wall of the guide member to clamp the outer wall of the guide member.

9. A sealing method for a tubular object penetration sealing device according to claim 6, characterized in that: The following steps are involved: S1: embed the sealing base into the partition, then assemble the locking pressure column, the squeezing ball and the sliding column into the sealing base, and insert the guide piece; S2: driving the slide column to move toward the inner top of the locking pressure column, and the squeezing ball is gradually squeezed and moved to between the surface of the pressing part and the outer wall of the guide member, clamping the outer wall of the guide member, and completing the locking of the guide member; S3: pre-install the extrusion seal into the compression cavity of the compression member, and install it together with the end of the guide member to complete the sealing.

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