CN-115596910-B - Radial crimping sealing device of gasbag for sonobuoy

CN115596910BCN 115596910 BCN115596910 BCN 115596910BCN-115596910-B

Abstract

The application provides an air bag radial compression joint sealing device for a sonobuoy, which belongs to the technical field of sonobuoys and specifically comprises a sealing upper flange, a sealing lower flange and an O-shaped sealing ring, wherein an inner ring which is radially inwards convex is arranged at the inner side of the lower end of the sealing upper flange, the O-shaped sealing ring is positioned on the lower end face of the inner ring, an air bag neck penetrates through the inner ring, the air bag neck is sleeved on the periphery of the sealing lower flange, an outer ring which protrudes out is arranged on the periphery of the sealing lower flange, the sealing lower flange is fixed on the sealing upper flange after the lower end face of the inner ring approaches, and the outer ring compresses the outer side face of the air bag neck on the O-shaped sealing ring. By the processing scheme, the reliability of sealing connection between the air bag and the sealing flange of the water surface electronic cabin is improved.

Inventors

FENG XIN
ZHAO FUCHUN
Tao xinzhou
LU WANQI

Assignees

中国航空工业集团公司洛阳电光设备研究所

Dates

Publication Date: 20260505
Application Date: 20221012

Claims (4)

1. The air bag radial compression joint sealing device for the sonobuoy is characterized in that the sealing device comprises a sealing upper flange, a sealing lower flange and an O-shaped sealing ring, wherein the inner side of the lower end of the sealing upper flange is provided with a radially inwards protruding inner ring, 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 sealing lower flange, the periphery of the sealing lower flange is provided with an outer ring which protrudes, the sealing lower flange is fixed on the sealing upper flange after the lower end face of the sealing lower flange approaches 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; The sealing device further comprises a pressing plate, wherein the pressing plate tightly presses the sealing lower flange in the sealing upper flange, and the pressing plate is fixedly connected with the sealing upper flange through bolts; The air inlet end part of the air bag neck is positioned between the pressing plate and the end surface of the sealing lower flange, and the pressing plate presses the air inlet end part of the air bag neck on the end surface of the sealing lower flange; The airbag comprises an airbag piece, a through hole for connecting the neck of the airbag is arranged in the center of the airbag piece, and the airbag piece is bent along a diagonal line and is sealed at the connected edge to form the airbag; One end of the air bag neck is turned up and then connected with the bag sheet around the through hole.
2. A sonobuoy balloon radial crimp seal according to claim 1, characterized in that the balloon neck is of one piece construction.
3. A sonobuoy balloon radial crimp seal according to claim 1, characterized in that the balloon neck has a thickness greater than the balloon sheet thickness.
4. A sonobuoy air bag radial pressure seal as claimed in claim 1, wherein the cuff and the flap of the air bag neck are welded together by heat and pressure welding on a heat sealer.

Description

Radial crimping 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 sonobuoy is activated when being put into water, and the water surface of the water-borne extension of the buoy is floated out of the water surface after the air bag is inflated. The water extension of the buoy consists of an air bag and a water surface electronic cabin, which are connected together in a sealing way, and the inside is communicated with air. The sealing connection procedure between the air bag and the water surface electronic cabin is one of the important factors influencing the air tightness of the buoy water extension. The traditional airbag for the sonobuoy adopts a plurality of polyurethane films to cut into an airbag piece, the airbag piece is processed on a heat sealing machine in a welding mode, the processing procedures are more, the processing cost is higher, and the sealing between the airbag piece and the electronic cabin on the water surface is generally realized in a radial bonding mode (cold bonding or hot bonding), wherein the cold bonding mode is to smear glue solution on the bonding part of the airbag and the electronic cabin, the airbag neck is tightly sleeved on the bonding part of the sealing cabin, and the sealing between the airbag and the electronic cabin is realized after the glue is dried. The thermal bonding mode is to bond the adhesive film on the bonding part of the electronic cabin in a heating mode, tightly sleeve the air bag on the bonding part 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 is in end face sealing connection with the electronic cabin on water, but the welding seam position of the air bag flange and the air bag body is subjected to tearing acting force of the buoy in water, so that the risk of air leakage caused by tearing of the welding seam position exists. The prior art has complex procedures, low standardized operation degree and procedure yield, poor reliability, maintainability and interchangeability, and environmental protection and energy conservation. Disclosure of Invention In view of the above, the application provides the radial compression joint sealing device for the air bag for the sonobuoy, which solves the problems in the prior art and improves the reliability of sealing connection between the air bag and the sealing flange of the water surface electronic cabin. The application provides an air bag radial compression joint sealing device for a sonobuoy, which adopts the following technical scheme: The utility model provides a radial crimping sealing device of gasbag for sonobuoy, gasbag includes bag and gasbag neck, sealing device is including sealing flange, sealing lower flange and O type sealing washer, the inboard radial inward protruding inner ring that is equipped with of sealing flange lower extreme, O type sealing washer is located the lower terminal surface of inner ring, gasbag neck passes the inner ring, gasbag neck cover is located sealing lower flange periphery, sealing lower flange periphery is equipped with carries out convex outer loop, sealing lower flange will after being close to the lower terminal surface of inner ring sealing lower flange is fixed sealing flange, the outer loop will the lateral surface of gasbag neck compresses tightly on O type sealing washer. Optionally, the sealing device further comprises a pressing plate, wherein the pressing plate tightly presses the sealing lower flange in the sealing upper flange, and the pressing plate is fixedly connected with the sealing upper flange through bolts. Optionally, the air inlet end portion of the air bag neck is located between the pressing plate and the end face of the sealing lower flange, and the pressing plate presses the air inlet end portion of the air bag neck on the end face of the sealing lower flange. Optionally, the air bag comprises a bag sheet, a through hole for connecting the neck of the air bag is arranged in the center of the bag sheet, and the bag sheet is bent along a diagonal line and is closed to form the bag after the connecting edge is closed. Optionally, one end of the air bag neck is turned over and then connected with the bag sheet around the through hole. Optionally, the air bag neck is of a one-piece structure. Optionally, the thickness of the air bag neck is larger than the thickness of the air bag sheet. Optionally, the flanging of the air bag neck and the bag sheet are welded together through hot-pressing on a heat sealing machine. In summary, the application has the following beneficial technical effects: the radial compression joint sealing method of the air bag for the sonobuoy has the advantages of simple structure, simple working procedure, convenient operation, labor and time