Inflatable plane sealing joint structure

Abstract

The embodiment of the utility model provides an inflatable plane sealing joint structure. The inflatable plane sealing joint structure comprises a sealing seat, a sealing air bag and a sealing gland, the cross section of the sealing seat is in a concave groove shape, one side of the sealing seat is fixedly connected with a workpiece A, a groove is formed in the other side of the sealing seat, and a sealing air bag is fixedly embedded in the groove. The sealing air bag comprises an air bag body in the middle, an air cavity is formed in the air bag body, and flanges are correspondingly arranged on the two sides of the air bag body. The sealing glands are correspondingly arranged on the flanges on the two sides of the air bag body, the sealing glands and the air bag body are jointly matched to form a sealing face tightly attached to the workpiece B, the sealing glands are fixed to the sealing base through fasteners, and the sealing glands press and fix the sealing air bag. According to the embodiment of the invention, the sealing air bag inflatable sealing principle is adopted, the compaction sealing requirement under a large-size and / or special-shaped plane sealing scene is met by utilizing the characteristic that the self-adaptive deformation amplitude of the sealing air bag is large, and the plane sealing performance between two workpieces is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plane sealing connection between workpieces, and particularly relates to a gas expansion type plane sealing node structure. BACKGROUND

[0002] In industrial production applications, it is often necessary to realize plane sealing between two workpieces. The existing plane sealing forms mainly include rubber gaskets, O-rings and other sealing structure types. However, in some large-size and / or special-shaped plane sealing scenes (such as I-shaped, U-shaped, O-shaped, waist-round-shaped, round-cornered rectangular-shaped, round-cornered triangular-shaped, elliptical-shaped and other structure plane sealing scenes with large diameters), the traditional sealing structure types are difficult to adapt to the application needs in special scenes. Moreover, with the use and wear of conventional rubber sealing gaskets and other traditional sealing materials, the sealing performance is obviously reduced, and the conventional sealing forms are difficult to realize quick switching between sealing and non-sealing to meet the application needs in special scenes. SUMMARY

[0003] In view of the above problems in the prior art, the embodiments of the present application provide a gas expansion type plane sealing node structure to solve the technical problem that the traditional sealing structure forms in the prior art are difficult to adapt to the application needs in special scenes.

[0004] The embodiments of the present application provide a gas expansion type plane sealing node structure, which comprises a sealing seat, a sealing air bag and a sealing gland.

[0005] The sealing seat is in a concave groove shape in cross section, one side of which is connected and fixed with a workpiece A, and the other side of which is provided with a recess, and the sealing air bag is embedded in the recess;

[0006] The sealing air bag comprises an air bag main body in the middle, the air bag main body is provided with an air cavity inside, and flanges are correspondingly arranged on both sides of the air bag main body.

[0007] The sealing gland is correspondingly arranged at the flanges on both sides of the air bag main body, and the sealing gland and the air bag main body jointly form a sealing surface which is tightly attached to a workpiece B, the sealing gland is fixed with the sealing seat by means of fasteners, and the sealing gland tightly fixes and secures the sealing air bag.

[0008] In an embodiment, an inflation assembly is further included, which is fixedly arranged on the sealing air bag and is used for inflating gas into the air cavity or discharging part of the gas in the air cavity, and the inflation assembly penetrates through the sealing seat and is fixed on the sealing seat.

[0009] In an embodiment, the fastener is a bolt, and through holes are correspondingly arranged on the sealing seat, the flanges and the sealing gland at the positions of the bolts, and the through holes of the sealing seat and the sealing gland are threaded holes with threads on the inner walls.

[0010] In an embodiment, the position where the flange is provided with the through hole is also provided with a threaded hole bushing.

[0011] In an embodiment, the side surface of the sealing gland close to the air bag body is a bevel, and the distance between the openings between the two sealing glands gradually decreases from inside to outside.

[0012] In an embodiment, the two side edges of the bevel are provided in the form of arc-shaped chamfers.

[0013] In an embodiment, the bolt is an internal hexagonal bolt, and the sealing gland is provided with a counterbore at the position of the bolt head.

[0014] In an embodiment, the sealing seat and the sealing gland are made of steel or hard polymer materials.

[0015] In an embodiment, the sealing air bag is made of rubber material, and the inflation assembly is fixed on the sealing air bag in the form of vulcanization fixation.

[0016] In an embodiment, the sealing air bag is made of rubber material, and the threaded hole bushing is fixed on the sealing air bag in the form of vulcanization fixation.

[0017] Compared with the prior art, the beneficial effects of the air-inflated flat sealing node structure provided by the embodiment of the present application are as follows:

[0018] 1. The air-inflated sealing principle of the sealing air bag is adopted in the embodiment of the present application, the characteristics of large self-adaptive deformation amplitude of the sealing air bag are utilized to realize the extrusion sealing requirement in the flat sealing scene of large size and / or special shape, and the flat sealing performance between two workpieces is effectively improved.

[0019] 2. The inflation assembly is further added in the embodiment of the present application, the inflation degree of the sealing air bag can be correspondingly adjusted through the inflation assembly, and then the rapid switching between sealing and non-sealing is realized, so as to meet the application requirement in special scenes. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure diagram of the air-inflated flat sealing node structure provided by the embodiment of the present application is shown.

[0021] REFERENCE NUMERALS

[0022] 1. Workpiece A; 2. Workpiece B; 3. Sealing seat; 4. Sealing air bag; 401. Air bag body; 402. Air cavity; 403. Flange; 5. Threaded hole bushing; 6. Sealing gland; 7. Fastener; 8. Inflation assembly. DETAILED DESCRIPTION

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0025] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0026] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0027] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0028] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0029] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0030] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention. The following description, in conjunction with... Figure 1 The preferred embodiments of the present invention will be described in further detail below:

[0031] like Figure 1 As shown, an embodiment of the present invention provides a pneumatic planar sealing node structure, including a sealing seat 3, a sealing airbag 4, and a sealing gland 6;

[0032] The sealing seat 3 is made of steel plate or hard polymer material. Its cross-section is a concave groove. One side is connected and fixed to the workpiece A1 (the connection and fixing method can be determined according to actual needs, such as welding or bolting to achieve connection and fixing). The other side has a groove, and the groove is embedded with a fixed sealing airbag 4.

[0033] The sealing air bag 4 is made of rubber material, and the material performance (such as hardness, pressure resistance, corrosion resistance, etc.) meets the needs of the application scene. The cross section of the sealing air bag 4 is in the shape of a Chinese character, including an air bag body 401 in the middle, an air cavity 402 is arranged in the air bag body 401, and flanges 403 are arranged on both sides of the air bag body 401;

[0034] The sealing gland 6 is made of steel plate or hard polymer material. The sealing gland 6 is arranged in pairs. The two groups of sealing glands 6 arranged in pairs are arranged on the flanges 403 on both sides of the air bag body 401. The sealing gland 6 and the air bag body 401 cooperatively form a sealing surface that tightly abuts the workpiece B2. The sealing gland 6 is fixed to the sealing seat 3 by the fastener 7, and the sealing gland 6 tightly fixes and fixes the sealing air bag 4.

[0035] In some application scenarios, the sealing performance needs to be adjusted, such as increasing or decreasing the expansion degree of the sealing air bag 4 to adapt to the sealing requirements of sealing gaps of different widths, or adjusting the expansion degree of the sealing air bag 4 to realize quick switching between sealing and non-sealing (such as a maintenance cabin arranged on one side of the ship body. The maintenance cabin is installed when maintenance is needed. The cabin body is generally in the shape of a cabin with one side open. The position of the cabin body abutting the ship body needs to be sealed to ensure that the cabin has a water-free maintenance environment. Because the sealing requirements of the maintenance cabin and the ship body are different in different stages of installation and removal, such as sealing during maintenance, and non-sealing during installation and hoisting to reduce the difficulty of installation), therefore, in an embodiment of the present application, a gas-inflatable flat sealing node structure is also provided, which includes an inflation assembly 8. The inflation assembly 8 is fixed in a vulcanized manner on the sealing air bag 4 and forms an integral whole with the sealing air bag 4. The inflation assembly 8 is used to inflate the air cavity 402 with gas or discharge part of the gas in the air cavity 402 to adjust the expansion degree of the sealing air bag 4. The inflation assembly 8 penetrates the sealing seat 3 and is tightly fixed on the sealing seat 3 by a nut. The end of the inflation assembly 8 is an inflation nozzle. The inflation nozzle can discharge part of the gas in the air cavity 402, or can be connected to an external inflation pipeline to inflate the air cavity 402 to expand and form a flat sealing with the workpiece B2. The air bag inflation pressure expansion sealing can effectively compensate for the possible spacing offset problem between the workpiece A1 and the workpiece B2, so that the sealing performance is better.

[0036] For the convenience of material selection and assembly and disassembly, in an embodiment, the fastener 7 is a bolt, the sealing seat 3, the flange 403 and the sealing gland 6 are all provided with through holes corresponding to the bolt installation position, and the through holes of the sealing seat 3 and the sealing gland 6 are threaded holes provided with threads on the inner wall. Of course, in order to avoid the problems that the sealing air bag 4 made of rubber material is easily damaged or the bolt is difficult to penetrate directly through the sealing air bag 4, the flange 403 is further provided with a threaded hole sleeve 5 at the position of the through hole, the threaded hole sleeve 5 is fixed on the sealing air bag 4 in the form of vulcanization and forms an integral whole with the sealing air bag 4. On this basis, in order to avoid the problem of reduced sealing performance caused by the exposed end of the bolt, the bolt is an internal hexagonal bolt, and the sealing gland 6 is provided with a counterbore for accommodating the head of the bolt at the position of the bolt head.

[0037] In order to improve the plane sealing effect, the cross-sectional shape of the air cavity 402 is preferably an arcuate cross-section, and the side facing the workpiece B2 is a plane that can better fit the workpiece B2. On this basis, a plurality of sealing ribs can be arranged along the length direction of the side of the air cavity 402 facing the workpiece B2 to further enhance the sealing effect. Of course, in order to better ensure the extrusion sealing effect, the side of the sealing gland 6 close to the air bag body 401 is a bevel, and the distance between the openings of the two sealing glands 6 gradually decreases from inside to outside, that is, the sealing gland 6 has the smallest opening distance on the side close to the workpiece B2. At the same time, in order to avoid the problem that the edges of the sealing gland 6 may scratch the sealing air bag 4, the edges of the bevel on both sides are arranged in the form of arc-shaped chamfer.

[0038] According to the specific needs of the workpiece A1, the sealing seat 3, the sealing air bag 4 and the sealing gland 6 can be processed into I-shaped, U-shaped, O-shaped, waist-round-shaped, rounded rectangular, rounded triangular, elliptical and other structural forms, and then assembled into an integral sealing structure type. According to the actual application needs, the sealing seat 3 can be welded or bolted and fixed on the workpiece A1; the workpiece A1 and the workpiece B2 can also be connected by flange bolts to compress and combine the sealing body.

[0039] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. An air inflated planar seal node configuration, characterized by: It comprises a sealing seat (3), a sealing air bag (4) and a sealing gland (6); The sealing seat (3) is in the shape of a concave groove in cross section, one side of which is connected and fixed with the workpiece A (1), and the other side of which is provided with a groove, and the sealing air bag (4) is embedded in the groove; The sealing air bag (4) comprises a main body (401) in the middle, and the main body (401) is provided with a gas cavity (402) inside, and the two sides of the main body (401) are provided with flanges (403) correspondingly; The sealing gland (6) is correspondingly arranged at the flanges (403) on both sides of the main body (401), and the sealing gland (6) and the main body (401) cooperatively form a sealing surface which is tightly attached to the workpiece B (2), the sealing gland (6) is fixed with the sealing seat (3) by fasteners (7), and the sealing gland (6) tightly fixes the sealing air bag (4).

2. An inflatable planar seal node configuration according to claim 1, wherein: It also comprises an inflation assembly (8) fixedly arranged on the sealing air bag (4), which is used for inflating gas into the gas cavity (402) or discharging part of the gas in the gas cavity (402), and the inflation assembly (8) penetrates the sealing seat (3) and is fixed on the sealing seat (3).

3. A gas inflatable planar seal node configuration according to claim 1, wherein: The fastener (7) is a bolt, and the sealing seat (3), the flanges (403) and the sealing gland (6) are all provided with through holes at the positions of the bolts, and the through holes of the sealing seat (3) and the sealing gland (6) are threaded holes provided with threads on the inner walls.

4. A gas inflatable planar seal node configuration according to claim 3, wherein: The position of the flanges (403) provided with the through holes is also fixed with a threaded hole bushing (5).

5. A gas inflatable planar seal node configuration according to claim 1, wherein: The side surface of the sealing gland (6) close to the main body (401) is a bevel, and the distance between the openings of the two sealing glands (6) gradually decreases from inside to outside.

6. A gas inflatable planar seal node configuration according to claim 5, wherein: The side edges of the bevel are both in the form of arc-shaped chamfers.

7. A gas inflatable planar seal node configuration according to claim 3, wherein: The bolt is an internal hexagonal bolt, and the sealing gland (6) is provided with a counterbore at the position of the bolt head.

8. The gas inflatable planar seal node construction of claim 1, wherein: The sealing seat (3) and the sealing gland (6) are both made of steel or hard polymer materials.

9. An inflatable planar seal node configuration according to claim 2, wherein: The sealing air bag (4) is made of rubber material, and the inflation assembly (8) is fixed on the sealing air bag (4) in the form of vulcanization fixation.

10. The gas inflatable planar seal node construction of claim 4, wherein: The sealing air bag (4) is made of rubber material, and the threaded hole bushing (5) is fixed on the sealing air bag (4) in the form of vulcanization fixation.

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