CN215596400U

CN215596400U - Bidirectional compression combined gasket

Info

Publication number: CN215596400U
Application number: CN202120892187.6U
Authority: CN
Inventors: 梁小光; 余道刚; 李海龙; 张微; 崔秋雯
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-01-21
Anticipated expiration: 2031-04-26

Abstract

The utility model aims to provide a bidirectional compression combined gasket which comprises a framework, an outer O-shaped ring and an inner O-shaped ring, wherein an inner circular arc groove for positioning the inner O-shaped ring is cut on the inner side of the framework according to the diameter of the inner O-shaped ring, the inner O-shaped ring is arranged in the inner circular arc groove on the inner side of the framework, a fillet for preventing the inner O-shaped ring from being damaged when the sealing is compressed is arranged at the end part of the inner circular arc groove, an outer circular arc groove for positioning the outer O-shaped ring is cut on the outer side of the framework according to the diameter of the outer O-shaped ring, the outer O-shaped ring is arranged in the outer circular arc groove on the outer side of the framework, and a fillet for preventing the outer O-shaped ring from being damaged when the sealing is compressed is arranged at the end part of the outer circular arc groove. The utility model is applied to hydraulic end face sealing, belongs to a general gasket, does not need to design a special groove and hole channel for the gasket for installation, and improves the sealing effect and increases the system safety through three sealing of two O-shaped rings and a framework.

Description

Bidirectional compression combined gasket

Technical Field

The utility model relates to a sealing structure, in particular to a hydraulic end face sealing structure.

Background

Leakage is a common phenomenon in a ship steam turbine oil system, how to avoid the leakage is a key difficult problem which troubles the oil system all the time, and the leakage of the oil system has potential safety hazards and easily causes ship fire. The oil system pipeline is complicated, mainly depends on flange and joint to connect, solves the sealed problem of flange and joint connection department and just can solve most running and leakage's problem.

Disclosure of Invention

The utility model aims to provide a bidirectional compression combined gasket which does not need to be provided with a special groove and hole channel for the gasket for installation, can improve the sealing effect and increase the system safety.

The purpose of the utility model is realized as follows:

the utility model relates to a bidirectional compression combined gasket, which is characterized in that: including the skeleton, outer O type circle, interior O type circle, the inboard interior circular arc groove that cuts out the interior circular arc of O type circle in the location according to interior O type circle diameter size of skeleton, interior O type circle is installed in the inboard interior circular arc inslot of skeleton, the tip setting of interior circular arc groove prevents the radius angle that interior O type circle damaged when sealed pressurized, the outer circular arc groove of the outer O type circle in location is cut out according to outer O type circle diameter size in the skeleton outside, outer O type circle is installed in the outer circular arc inslot in the skeleton outside, the tip setting in outer circular arc groove prevents the radius angle that outer O type circle damaged when sealed pressurized.

The present invention may further comprise:

1. the framework is a metal framework, and tooth-shaped sealing grooves which are stressed and sealed together with the inner O-shaped ring and the outer O-shaped ring when the upper surface and the lower surface of the metal framework are pressed are machined.

2. The framework is made of a non-metal material, and after the inner O-shaped ring and the outer O-shaped ring are deformed and sealed in advance and reach set values, the non-metal framework is deformed and sealed together with the inner O-shaped ring and the outer O-shaped ring.

The utility model has the advantages that: the utility model is applied to hydraulic end face sealing, belongs to a general gasket, does not need to design a special groove and hole channel for the gasket for installation, and improves the sealing effect and increases the system safety through three sealing of two O-shaped rings and a framework.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The utility model will now be described in more detail by way of example with reference to the accompanying drawings in which:

embodiment 1:

with reference to fig. 1, the present invention discloses a two-way compression combination gasket for sealing the flange or joint connection end face; the bidirectional pressed combined gasket belongs to a universal gasket and does not need to be installed by independently designing a groove and a hole channel.

As shown in fig. 1, an outer O-shaped ring 1 is arranged on a framework 2, an arc groove is cut on the outer edge of the framework 2 according to the diameter of the outer O-shaped ring 1 to position the outer O-shaped ring 1, the outer O-shaped ring 1 is prevented from moving, and the end part of the arc is rounded to prevent the O-shaped ring from being damaged when the seal is pressed; interior O shape circle 3 is installed in skeleton 2, and the circular arc groove is cut according to interior O shape circle diameter to 2 inner edges of skeleton for O shape circle 3 in the location, prevent that interior O shape circle 3 from taking place to move, circular arc tip radius angle prevents that interior O shape circle 3 from damaging when sealed pressurized, and skeleton 2 adopts metal framework, and the profile of tooth seal groove is processed to metal framework upper and lower surface, and it is sealed with interior O shape circle 3, the common atress of outer O shape circle 1 when the packing ring pressurized, increases sealed redundancy, improves sealed security.

The framework 2 positions the inner O-shaped ring 3 and the outer O-shaped ring 1 through the inner edge and the outer edge, the inner O-shaped ring 3 and the outer O-shaped ring 1 deform and seal firstly when the bidirectional compression combined gasket is stressed, and when the stress reaches a certain degree, the framework 2 deforms under stress to seal together with the inner O-shaped ring 3 and the outer O-shaped ring 1.

The two-way combination sealing washer is also suitable for sealing water and other liquid media.

Embodiment 2:

when the framework 2 is changed into a non-metal material, the upper surface and the lower surface are not provided with sealing grooves, when the stress is applied, the inner O-shaped ring 3 and the outer O-shaped ring 1 are firstly deformed and sealed, and when the stress reaches a formed degree, the non-metal framework 2 is deformed and sealed along with the inner O-shaped ring 3 and the outer O-shaped ring 1.

Claims

1. Two-way pressurized combination packing ring, characterized by: including the skeleton, outer O type circle, interior O type circle, the inboard interior circular arc groove that cuts out the interior circular arc of O type circle in the location according to interior O type circle diameter size of skeleton, interior O type circle is installed in the inboard interior circular arc inslot of skeleton, the tip setting of interior circular arc groove prevents the radius angle that interior O type circle damaged when sealed pressurized, the outer circular arc groove of the outer O type circle in location is cut out according to outer O type circle diameter size in the skeleton outside, outer O type circle is installed in the outer circular arc inslot in the skeleton outside, the tip setting in outer circular arc groove prevents the radius angle that outer O type circle damaged when sealed pressurized.

2. The two-way compression composite washer of claim 1, wherein: the framework is a metal framework, and tooth-shaped sealing grooves which are stressed and sealed together with the inner O-shaped ring and the outer O-shaped ring when the upper surface and the lower surface of the metal framework are pressed are machined.

3. The two-way compression composite washer of claim 1, wherein: the framework is a non-metal framework, and after the inner O-shaped ring and the outer O-shaped ring are deformed and sealed in advance and reach set values, the non-metal framework is deformed and sealed together with the inner O-shaped ring and the outer O-shaped ring.