CN115596910A

CN115596910A - Radial crimping sealing device of gasbag for sonobuoy

Info

Publication number: CN115596910A
Application number: CN202211250010.1A
Authority: CN
Inventors: 冯鑫; 赵富春; 陶新洲; 卢万崎
Original assignee: Luoyang Institute of Electro Optical Equipment AVIC
Current assignee: Luoyang Institute of Electro Optical Equipment AVIC
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-01-13

Abstract

The application provides a radial crimping sealing device of gasbag for sonobuoy belongs to sonobuoy's technical field, specifically includes sealed flange, sealed lower flange and O type sealing washer, sealed flange lower extreme inboard is equipped with radial interior convex inner ring, O type sealing washer is located the lower terminal surface of inner ring, the gasbag neck passes the inner ring, the gasbag neck cover is located sealed lower flange periphery, sealed lower flange periphery is equipped with carries out convex outer loop, sealed lower flange is close to the back with to the lower terminal surface of inner ring sealed lower flange is fixed sealed lower flange is in sealed flange, the outer loop will the lateral surface of gasbag neck compresses tightly on O type sealing washer. Through the processing scheme of this application, improve the reliability of sealing connection between gasbag and the surface of water electron cabin sealing flange.

Description

Radial compression joint sealing device of gasbag for sonobuoy

Technical Field

The application relates to the field of sonobuoys, in particular to an air bag radial compression joint sealing device for a sonobuoy.

Background

The sonar buoy is activated when meeting water after being thrown into water, and the air bag is inflated to enable the underwater extension of the buoy to float out of the water surface and float out of the water surface. The water extension of the buoy consists of an air bag and a water surface electronic cabin which are hermetically connected together, and the inside of the air bag is communicated with the inside of the water electronic cabin. The sealing connection process between the air bag and the water surface electronic cabin is one of important factors influencing the air tightness of the buoy water extension machine.

Traditional for sonobuoy gasbag adopt a plurality of polyurethane films to tailor and form the flight piece and realize gasbag processing through the butt fusion mode on the heat-sealing machine, manufacturing procedure is more, and the processing cost is higher, and generally adopt radial bonding mode (cold bonding or hot bonding) to realize sealing connection with sealed between the surface of water electron cabin, wherein cold bonding mode is on scribbling the bonding part of gasbag and electron cabin with the glue solution, tightly overlaps gasbag neck on the bonding part of sealed cabin, wait to glue to realize sealed between gasbag and the electron cabin after drying. The hot sticking mode is to stick the adhesive film on the bonding position of the electronic cabin by a heating mode, tightly sleeve the air bag on the bonding position of the electronic cabin after cooling, and heat again to realize the sealing between the air bag and the electronic cabin. The latest domestic buoy air bag with support legs and the overwater electronic cabin are connected in an end face sealing mode, but the welding seam position of the air bag flange and the air bag body bears the tearing acting force of the buoy in the water, so that the risk of air leakage caused by tearing of the welding seam position exists. In the prior art, the air bag and the water surface electronic cabin are in sealed connection, the process is complex, the standardized operation degree and the process yield are low, the reliability, the maintainability and the interconversion are poor, and the environment protection and the energy conservation are not enough.

Disclosure of Invention

In view of this, the application provides a radial crimping sealing device of gasbag for sonobuoy, has solved the problem among the prior art, improves sealing connection's between gasbag and the surface of water electronic cabin sealing flange reliability.

The application provides a radial crimping sealing device of gasbag adopts following technical scheme for sonobuoy:

a radial compression joint sealing device of an air bag for a sonobuoy is characterized in that the air bag comprises a bag body and an air bag neck, the sealing device comprises an upper sealing flange, a lower sealing flange and an O-shaped sealing ring, a radially inward convex inner ring is arranged on the inner side of the lower end of the upper sealing flange, the O-shaped sealing ring is located on the lower end face of the inner ring, the air bag neck penetrates through the inner ring, the air bag neck is sleeved on the periphery of the lower sealing flange, a convex outer ring is arranged on the periphery of the lower sealing flange, the lower sealing flange is fixed on the upper sealing flange after approaching to the lower end face of the inner ring, and the outer ring compresses the outer side face of the air bag neck on the O-shaped sealing ring.

Optionally, the sealing device further comprises a pressing plate, the pressing plate presses the lower sealing flange tightly into the upper sealing flange, and the pressing plate is fixedly connected with the upper sealing flange through bolts.

Optionally, the end of the air inlet of the airbag neck is located between the pressure plate and the end face of the lower sealing flange, and the pressure plate presses the end of the air inlet of the airbag neck against the end face of the lower sealing flange.

Optionally, the airbag comprises a bag piece, a through hole for connecting the neck of the airbag is formed in the center of the bag piece, and the bag piece is bent along a diagonal line and sealed at the edge of the bag piece to form the bag.

Optionally, one end of the airbag neck is connected with the bag piece around the through hole after being flanged.

Optionally, the airbag neck is of a one-piece structure.

Optionally, the thickness of the airbag neck is greater than the thickness of the airbag.

Optionally, the turned-over edge of the airbag neck and the airbag piece are welded together by hot-pressing on a heat-sealing machine.

To sum up, this application includes following beneficial technological effect:

the air bag radial compression joint sealing method for the sonobuoy has the advantages of being simple in structure, simple in process, convenient to operate, labor-saving, time-saving, capable of achieving reliable sealing between the air bag and the water surface electronic cabin sealing flange, capable of achieving standardized operation, and capable of effectively reducing influences of human factors in the machining process, therefore, good in practicability, easy to popularize and high in practical value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the assembly of the radial compression seal of the present application;

FIG. 2 is an exploded view of the bladder radial crimp sealing device of the present application;

FIG. 3 is a schematic view of a pouch and neck of an airbag of the present application.

Description of the reference numerals: 1. a pouch; 2. sealing the upper flange; 21. an inner ring; 3. sealing the lower flange; 31. an outer ring; 4. an O-shaped sealing ring; 5. pressing a plate; 6. a screw; 7. an air bag neck; 8. a caplet; 81. and a through hole.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to or other than one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The embodiment of the application provides a radial crimping sealing device of an air bag for a sonobuoy.

As shown in fig. 1 to 3, the air bag radial compression sealing device for a sonobuoy comprises an air bag 1 and an air bag neck 7, the sealing device comprises an upper sealing flange 2, a lower sealing flange 3 and an O-ring 4, a radially inward-protruding inner ring 21 is arranged on the inner side of the lower end of the upper sealing flange 2, the O-ring 4 is located on the lower end face of the inner ring 21, the air bag neck 7 penetrates through the inner ring 21, the air bag neck 7 is sleeved on the periphery of the lower sealing flange 3, a protruding outer ring 31 is arranged on the periphery of the lower sealing flange 3, the lower sealing flange 3 is fixed on the upper sealing flange 2 after approaching the lower end face of the inner ring 21, and the outer ring 31 compresses the outer side face of the air bag neck 7 on the O-ring 4. Wherein, the middle part of the lower sealing flange 3 is provided with a vent hole for ventilating between the ventilating device and the bag 1.

The sealing device further comprises a pressing plate 5, the pressing plate 5 presses the lower sealing flange 3 in the upper sealing flange 2, and the pressing plate 5 is fixedly connected with the upper sealing flange 2 through bolts.

The air bag neck 7 penetrates through the lower sealing flange 3, the O-shaped sealing ring 4 is sleeved on the outer portion of the air bag neck 7, the lower sealing flange 3 is sleeved in the air bag neck 7, the air bag and the lower sealing flange 3 are pressed into the upper sealing flange 2 by a press machine by utilizing the deformation characteristic of the O-shaped sealing ring 4 so as to form tight radial sealing, and the air bag neck 7 and the O-shaped sealing ring 4 are pressed on the inner ring 21 by the outer ring 31. The pressing plate 5 and the sealing upper flange 2 are fastened and connected together by using the screw 6, so that the air bag neck 7 is pressed by using the boss of the pressing plate 5, and the air bag body is prevented from relative displacement with the O-shaped sealing ring 4 under the action of external force.

The end part of the air inlet of the air bag neck 7 is positioned between the pressing plate 5 and the end surface of the lower sealing flange 3, and the pressing plate 5 presses the end part of the air inlet of the air bag neck 7 on the end surface of the lower sealing flange 3.

The air bag comprises a bag piece 8, a through hole 81 connected with an air bag neck 7 is formed in the center of the bag piece 8, the bag piece 8 is square, and the bag piece 8 is bent along a diagonal line and is closed to form the bag 1 after the edges are connected. The air sac tablet 8 is symmetrically folded and bent, then the edges of two sides are aligned, and then the buoy sac tablet 1 is formed by hot pressing on a heat sealing machine.

One end of the air bag neck 7 is connected with the bag piece 8 around the through hole 81 after being turned over.

The air bag neck 7 is of a one-piece structure.

The thickness of the air bag neck 7 is larger than that of the bag piece 8.

The turned-over edge of the air bag neck 7 and the bag piece 8 are welded together through hot-pressing on a heat-sealing machine.

The airbag neck 7 and the airbag section 8 are made of two thermoplastic resin film materials with different thicknesses, the thickness of the airbag neck 7 is larger than that of the airbag section 8, the two thermoplastic resin film materials are preferably made of polyurethane film materials, the airbag neck 7 is turned on a heat sealing machine and then welded together in a hot pressing mode, and the airbag section 8 is symmetrically folded and bent, then two side edges of the airbag section are aligned, and finally the airbag is formed by hot pressing on the heat sealing machine.

This application is complicated, process qualification rate and reliability are low, the cost is higher, maintainability and the poor problem of interconversion in order to overcome prior art aviation sonar buoy gasbag and the surface of water sealed cabin between the sealing connection process, provides a gasbag radial crimping sealing method for sonar buoy, can effectively reduce gasbag processing cost, improves the reliability of sealing connection between gasbag and the surface of water electronic compartment sealed flange, and simple process, the cost is lower, be convenient for reprocess or change the gasbag.

Discover that there is the gas pocket on the gasbag surface when sonobuoy gasbag carries out airtight detection, demolish clamp plate 5 through demolising four screws 6, it is ejecting from sealed upper flange 2 with sealed lower flange 3 with the gasbag body through the press again, thereby the realization is to demolising of gasbag, so that maintain or change the gasbag, this kind of dismantlement mode is very simple and sealed upper flange 2, sealed lower flange 3, O type sealing washer 4 repeatedly usable, gasbag dismouting cost has effectively been reduced, and the efficiency of installing and removing has been improved.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The radial compression joint sealing device for the air bag for the sonobuoy is characterized in that the sealing device comprises an upper sealing flange, a lower sealing flange and an O-shaped sealing ring, wherein a radially inward convex inner ring is arranged on the inner side of the lower end of the upper sealing flange, the O-shaped sealing ring is positioned on the lower end face of the inner ring, the air bag neck penetrates through the inner ring, the air bag neck is sleeved on the periphery of the lower sealing flange, a convex outer ring is arranged on the periphery of the lower sealing flange, the lower sealing flange is fixed on the upper sealing flange after approaching to the lower end face of the inner ring, and the outer ring compresses the outer side face of the air bag neck on the O-shaped sealing ring.

2. The sonobuoy airbag radial compression seal apparatus of claim 1, further comprising a pressure plate that compresses the lower seal flange within the upper seal flange, the pressure plate being fixedly attached to the upper seal flange by bolts.

3. The sonobuoy air bag radial compression seal apparatus of claim 2, wherein the air inlet end of the air bag neck is located between a pressure plate and the end face of the lower seal flange, the pressure plate pressing the air inlet end of the air bag neck against the end face of the lower seal flange.

4. The sonobuoy air bag radial compression joint sealing device as claimed in claim 1, wherein the air bag comprises a bladder patch, a through hole for connecting the neck of the air bag is formed in the center of the bladder patch, and the bladder patch is bent along a diagonal line and closed at the connecting edge to form the air bag.

5. The sonobuoy airbag radial compression seal apparatus of claim 4, wherein one end of the airbag neck is flanged and then connected with the bladder piece around the through hole.

6. The sonobuoy airbag radial compression seal apparatus of claim 4, wherein the airbag neck is a one piece construction.

7. The sonobuoy airbag radial crimp sealing device of claim 4, wherein the thickness of the airbag neck is greater than the thickness of the caplet.

8. The sonobuoy air bladder radial compression joint sealing device of claim 5, wherein the cuff and the bladder flap of the air bladder neck are fused together by thermocompression bonding on a heat sealing machine.