CN203384409U

CN203384409U - Line-contact spherical surface sealing ring

Info

Publication number: CN203384409U
Application number: CN201320440310.6U
Authority: CN
Inventors: 孙宝秋; 许一攀; 孙宝聪; 陈成贵
Original assignee: ZHEJIANG TEHONG WANG SPECIAL VALVE CO Ltd
Current assignee: ZHEJIANG TEHONG WANG SPECIAL VALVE CO Ltd
Priority date: 2013-07-24
Filing date: 2013-07-24
Publication date: 2014-01-08
Anticipated expiration: 2023-07-24

Abstract

The utility model discloses a line-contact spherical surface sealing ring which comprises a sealing ring body, wherein the inner side of the sealing ring body is provided with a sealing end; the line-contact spherical surface sealing ring is characterized in that the sealing end is provided with an annular edge; concave annular cambered surfaces are formed in the sealing ring body and in the space between the annular edge and the sealing ring body. In the line-contact spherical surface sealing ring, as the concave annular cambered surfaces are formed in the sealing ring body and in the space between the annular edge and the sealing ring body, compared with the inclined surface structure of a conventional sealing ring, the annular cambered surface structure of the line-contact spherical surface sealing ring can prevent surface contact formed by the annular cambered surface of the sealing ring body and a sphere, and enables the contact position of the sealing ring body and the sphere to be the annular edge only, so that the line contact formed by the sphere and the sealing ring body is ensured, and the structure of line contact can reduce torque and deformation so as to enable the sealing ring to have a good sealing performance.

Description

Line contact ball face sealing circle

Technical field

The utility model relates to a kind of line contact ball face sealing circle.

Background technique

The seal ring arranged on the conventional ball valve valve seat is generally with spheroid the structure that face contacts, and therefore easily produces moment of torsion, and then distortion, thereby affects sealability.

The model utility content

In view of the deficiency that background technique exists, technical problem to be solved in the utility model is to provide a kind of and spheroid and is the line that line contacts and contacts the ball face sealing circle.

The utility model takes following technological scheme to complete: line contact ball face sealing circle, comprise the seal ring body, the inboard of seal ring body has sealed end, described sealed end is with annular seamed edge, on described seal ring body, described annular seamed edge is to the annular cambered surface that has indent between seal ring body end face.

In the utility model, on the seal ring body, annular seamed edge is to the annular cambered surface that has indent between seal ring body end face, compare the ramp structure of conventional seals circle, annular cambered surface structure of the present utility model can avoid the annular cambered surface place of seal ring body to contact with spheroid formation face, make the contact position of seal ring body and spheroid that annular seamed edge only be arranged, thereby what ensured that spheroid forms with the seal ring body is line contacts, and the structure of line contact can reduce the generation of moment of torsion, reduce distortion, make the sealability of seal ring better.

The accompanying drawing explanation

The utility model has following accompanying drawing:

The line that Fig. 1 provides for the utility model contacts the structural plan schematic diagram of ball face sealing circle.

Fig. 2 is that the line contact ball face sealing circle in Fig. 1 is arranged on valve seat and the structural representation coordinated with spheroid.

Embodiment

Accompanying drawing has meaned the technical solution of the utility model and embodiment, below further describes by reference to the accompanying drawings each details and the working principle thereof of embodiment again.

As shown in Figure 1 and Figure 2, the line contact ball face sealing circle that the utility model provides, comprise seal ring body 1, the inboard of seal ring body 1 has sealed end 2, described sealed end 2 is with annular seamed edge 3, on described seal ring body 1, described annular seamed edge 3 is to the annular cambered surface 5 that has indent between seal ring body end face 4.

As shown in Figure 2, the downside of seal ring body 1 is with the ring packing compensation conical surface 6, and the existence of this ring packing compensation conical surface 6 can make the distortion leeway of seal ring body 1 larger, and elasticity is larger, can make seal ring body 1 have sealing compensation performance better.

As shown in Figure 1, in order to possess decompression function, the outer side surface of seal ring body 1 is with a plurality of gas pressure relief slots 7, and gas pressure relief slot 7 can discharge unnecessary pressure.

Claims

1. a line contacts the ball face sealing circle, comprise the seal ring body, the inboard of seal ring body has sealed end, it is characterized in that: described sealed end is with annular seamed edge, on described seal ring body, described annular seamed edge is to the annular cambered surface that has indent between seal ring body end face.

2. line according to claim 1 contacts the ball face sealing circle, and it is characterized in that: the downside of described seal ring body compensates the conical surface with ring packing.

3. according to the described line contact of right 1 or 2 ball face sealing circle, it is characterized in that: the outer side surface of described seal ring body is with a plurality of gas pressure relief slots.